RE: Studying Switching [7:75030]
Heh, I installed quite a few of those Cisco router blades in Synoptics hubs! I also liked their SPARC network management modules, but I don't think that had anything to do with Cisco. Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: MADMAN [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 10, 2003 4:18 PM To: [EMAIL PROTECTED] Subject: Re: Studying Switching [7:75030] Howard C. Berkowitz wrote: > At 5:00 PM + 9/10/03, Priscilla Oppenheimer wrote: > >>Tim Champion wrote: >> >>> All the info relating to this book is good and I'm going to buy >>> on the back >>> of these reviews but... what makes people write switching >>> related poems? >> >>Because if we don't laugh at ourselves then we have to cry! :-) You should >>have heard the explanations of a brouter back in the 80s. You think people >>are confused now, but they were even more confused back then! And now we >>have Layer 3 switches! >> >>Priscilla > > > Brouter was bad enough. Then, when Synoptics and Cisco were > contemplating a merger of Synoptics hubs and Cisco routers, the term > (see the little green Cisco glossary) was Rub and Rubsystem. Contemplating? I seem to recall a Cisco router blade that we tested in about 1990 that you plugged into a Snyoptics hub. > > Later, when Cisco came out with combined hubs and routers, the > official term was hublet. When I asked one of my classes if anyone > knew the new term, someone replied "houter?" (use American > pronunciation). I like the Queens English pronunciation better ;) Dave > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Emotion should reflect reason not guide it" **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75211&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
At 3:17 PM -0500 9/10/03, MADMAN wrote: >Howard C. Berkowitz wrote: > >>At 5:00 PM + 9/10/03, Priscilla Oppenheimer wrote: >> >>>Tim Champion wrote: >>> >>>>All the info relating to this book is good and I'm going to buy >>>>on the back >>>>of these reviews but... what makes people write switching >>>>related poems? >>> >>>Because if we don't laugh at ourselves then we have to cry! :-) You should >>>have heard the explanations of a brouter back in the 80s. You think people >>>are confused now, but they were even more confused back then! And now we >>>have Layer 3 switches! >>> >>>Priscilla >> >> >>Brouter was bad enough. Then, when Synoptics and Cisco were >>contemplating a merger of Synoptics hubs and Cisco routers, the >>term (see the little green Cisco glossary) was Rub and Rubsystem. > > Contemplating? I seem to recall a Cisco router blade that we >tested in about 1990 that you plugged into a Snyoptics hub. Oh yes...just like they did with Cabletron. Those were OEM agreements rather than an actual merger. >> >>Later, when Cisco came out with combined hubs and routers, the >>official term was hublet. When I asked one of my classes if anyone >>knew the new term, someone replied "houter?" (use American >>pronunciation). > > I like the Queens English pronunciation better ;) > > Dave Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75210&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Howard C. Berkowitz wrote: > At 5:00 PM + 9/10/03, Priscilla Oppenheimer wrote: > >>Tim Champion wrote: >> >>> All the info relating to this book is good and I'm going to buy >>> on the back >>> of these reviews but... what makes people write switching >>> related poems? >> >>Because if we don't laugh at ourselves then we have to cry! :-) You should >>have heard the explanations of a brouter back in the 80s. You think people >>are confused now, but they were even more confused back then! And now we >>have Layer 3 switches! >> >>Priscilla > > > Brouter was bad enough. Then, when Synoptics and Cisco were > contemplating a merger of Synoptics hubs and Cisco routers, the term > (see the little green Cisco glossary) was Rub and Rubsystem. Contemplating? I seem to recall a Cisco router blade that we tested in about 1990 that you plugged into a Snyoptics hub. > > Later, when Cisco came out with combined hubs and routers, the > official term was hublet. When I asked one of my classes if anyone > knew the new term, someone replied "houter?" (use American > pronunciation). I like the Queens English pronunciation better ;) Dave > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75208&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
At 5:00 PM + 9/10/03, Priscilla Oppenheimer wrote: >Tim Champion wrote: >> >> All the info relating to this book is good and I'm going to buy >> on the back >> of these reviews but... what makes people write switching >> related poems? > >Because if we don't laugh at ourselves then we have to cry! :-) You should >have heard the explanations of a brouter back in the 80s. You think people >are confused now, but they were even more confused back then! And now we >have Layer 3 switches! > >Priscilla Brouter was bad enough. Then, when Synoptics and Cisco were contemplating a merger of Synoptics hubs and Cisco routers, the term (see the little green Cisco glossary) was Rub and Rubsystem. Later, when Cisco came out with combined hubs and routers, the official term was hublet. When I asked one of my classes if anyone knew the new term, someone replied "houter?" (use American pronunciation). Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75204&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Tim Champion wrote: > > All the info relating to this book is good and I'm going to buy > on the back > of these reviews but... what makes people write switching > related poems? Because if we don't laugh at ourselves then we have to cry! :-) You should have heard the explanations of a brouter back in the 80s. You think people are confused now, but they were even more confused back then! And now we have Layer 3 switches! Priscilla > ""Nakul Malik"" wrote in message > news:[EMAIL PROTECTED] > > Hi all, > > I started off studying routing and found it to be a topic > that interested > me > > a lot. I just couldn't get enough of halabi Doyle and the > rest. I studied > a > > lot, practiced a lot and was thrilled when I passed the exam > in beta. > > > > Next I started studying for switching. That didn't turn out > as well as I > > thought it would. I couldn't just work up the same level of > interest. I > have > > been analyzing the reasons and have come up with the > following: > > 1. I've never worked with switches much, so I don't know too > much about > > them, as opposed to routers. > > 2. Study materials. > > > > I've been wondering, has anyone else faced similar problems > in their quest > > for CCNP. > > > > Also, could someone recommend some good materials/resources > for switching > > other than the official Cisco book? > > > > Any/all answers would be appreciated. > > Thanks. > > -N > > > > -- > > Nakul Malik > > > > H-342 > > New Rajendra Nagar > > New Delhi - 110060 > > > > Mobile: +91-9811424477 > > Ph: +91-11- 2582 3488 > > +91-11- 2585 0155 > > Fax:: +91-11- 2575 2904 > > > > [EMAIL PROTECTED] > > **Please support GroupStudy by purchasing from the GroupStudy > Store: > > http://shop.groupstudy.com > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75195&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
No sorry I know that peom, no spanning in there at all. LoL Steve Tom Lisa wrote: > Priscilla, > > Didn't Radia write a poem that starts something like > "I have never seen a tree as lovely as a spanning tree?" > > BTW, is it still possible to get a "free" copy of 802.1s & w. > I looked on the IEEE site but couldn't find them. > > Prof. Tom Lisa, CCAI > Community College of Southern Nevada > Cisco ATC/Regional Networking Academy > "Cunctando restituit rem" > > Priscilla Oppenheimer wrote: > > Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin > Hamilton. It's > right up there with Doyle as one of the best networking books ever > written. > It makes switching fun again! ;-) It's well written, technicaly > accurate and > interesting, and it doesn't just throw the latest marketing trends at > you > with no explanation of their history, like some switching material > does. > > Also, CertificationZone has some good articles and study materials > for > switching. > > By the way, switching isn't as dull as it might seem. The spanning > tree > algorithm can be quite interesting to study. And there are > enhancements to > it now like 802.1s (multiple spanning trees) and 802.1w (rapid > spanning tree > protocol). > > Good luck! > > Priscilla Oppenheimer > > Nakul Malik wrote: > > > > Hi all, > > I started off studying routing and found it to be a topic that > > interested me > > a lot. I just couldn't get enough of halabi Doyle and the rest. > > I studied a > > lot, practiced a lot and was thrilled when I passed the exam in > > beta. > > > > Next I started studying for switching. That didn't turn out as > > well as I > > thought it would. I couldn't just work up the same level of > > interest. I have > > been analyzing the reasons and have come up with the following: > > 1. I've never worked with switches much, so I don't know too > > much about > > them, as opposed to routers. > > 2. Study materials. > > > > I've been wondering, has anyone else faced similar problems in > > their quest > > for CCNP. > > > > Also, could someone recommend some good materials/resources for > > switching > > other than the official Cisco book? > > > > Any/all answers would be appreciated. > > Thanks. > > -N > > > > -- > > Nakul Malik > > > > H-342 > > New Rajendra Nagar > > New Delhi - 110060 > > > > Mobile: +91-9811424477 > > Ph: +91-11- 2582 3488 > > +91-11- 2585 0155 > > Fax:: +91-11- 2575 2904 > > > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75168&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
All the info relating to this book is good and I'm going to buy on the back of these reviews but... what makes people write switching related poems? ""Nakul Malik"" wrote in message news:[EMAIL PROTECTED] > Hi all, > I started off studying routing and found it to be a topic that interested me > a lot. I just couldn't get enough of halabi Doyle and the rest. I studied a > lot, practiced a lot and was thrilled when I passed the exam in beta. > > Next I started studying for switching. That didn't turn out as well as I > thought it would. I couldn't just work up the same level of interest. I have > been analyzing the reasons and have come up with the following: > 1. I've never worked with switches much, so I don't know too much about > them, as opposed to routers. > 2. Study materials. > > I've been wondering, has anyone else faced similar problems in their quest > for CCNP. > > Also, could someone recommend some good materials/resources for switching > other than the official Cisco book? > > Any/all answers would be appreciated. > Thanks. > -N > > -- > Nakul Malik > > H-342 > New Rajendra Nagar > New Delhi - 110060 > > Mobile: +91-9811424477 > Ph: +91-11- 2582 3488 > +91-11- 2585 0155 > Fax:: +91-11- 2575 2904 > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75165&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
page 58, Interconnections, 2e Algorhyme I think that I shall never see A graph more lovely than a tree. A tree whose crucial property Is loop-free connectivity. A tree that must be sure to span So packets can reach every LAN. Firest, the root must be selected. By ID, it is elected. Least-cost paths from root are traced. In the tree, these paths are placed. A mesh is made by folks like me, Then bridges find a spanning tree. --Radia Perlman Tom Lisa wrote: > Priscilla, > > Didn't Radia write a poem that starts something like > "I have never seen a tree as lovely as a spanning tree?" > > BTW, is it still possible to get a "free" copy of 802.1s & w. > I looked on the IEEE site but couldn't find them. > > Prof. Tom Lisa, CCAI > Community College of Southern Nevada > Cisco ATC/Regional Networking Academy > "Cunctando restituit rem" > > Priscilla Oppenheimer wrote: > > Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin > Hamilton. It's > right up there with Doyle as one of the best networking books ever > written. > It makes switching fun again! ;-) It's well written, technicaly > accurate and > interesting, and it doesn't just throw the latest marketing trends at > you > with no explanation of their history, like some switching material > does. > > Also, CertificationZone has some good articles and study materials > for > switching. > > By the way, switching isn't as dull as it might seem. The spanning > tree > algorithm can be quite interesting to study. And there are > enhancements to > it now like 802.1s (multiple spanning trees) and 802.1w (rapid > spanning tree > protocol). > > Good luck! > > Priscilla Oppenheimer > > Nakul Malik wrote: > > > > Hi all, > > I started off studying routing and found it to be a topic that > > interested me > > a lot. I just couldn't get enough of halabi Doyle and the rest. > > I studied a > > lot, practiced a lot and was thrilled when I passed the exam in > > beta. > > > > Next I started studying for switching. That didn't turn out as > > well as I > > thought it would. I couldn't just work up the same level of > > interest. I have > > been analyzing the reasons and have come up with the following: > > 1. I've never worked with switches much, so I don't know too > > much about > > them, as opposed to routers. > > 2. Study materials. > > > > I've been wondering, has anyone else faced similar problems in > > their quest > > for CCNP. > > > > Also, could someone recommend some good materials/resources for > > switching > > other than the official Cisco book? > > > > Any/all answers would be appreciated. > > Thanks. > > -N > > > > -- > > Nakul Malik > > > > H-342 > > New Rajendra Nagar > > New Delhi - 110060 > > > > Mobile: +91-9811424477 > > Ph: +91-11- 2582 3488 > > +91-11- 2585 0155 > > Fax:: +91-11- 2575 2904 > > > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html This email has been scanned for all viruses by the MessageLabs Email Security System. For more information on a proactive email security service working around the clock, around the globe, visit http://www.messagelabs.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75163&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Tom Lisa wrote: > > Priscilla, > > Didn't Radia write a poem that starts something like > "I have never seen a tree as lovely as a spanning tree?" > > BTW, is it still possible to get a "free" copy of 802.1s & w. > I looked on the IEEE site but couldn't find them. Sure you can still get them for free. You have to agree to something. I just clicked on Accept. I don't know what I agreed to. ;-) Seriously, I think it was something about copyright, which is important... Anyway, just go to http://standards.ieee.org/getieee802/ and click away. Much better than the old days when you had to pay hundreds of dollars, eh? Priscilla > > Prof. Tom Lisa, CCAI > Community College of Southern Nevada > Cisco ATC/Regional Networking Academy > "Cunctando restituit rem" > > Priscilla Oppenheimer wrote: > > Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin > Hamilton. It's > right up there with Doyle as one of the best networking books > ever > written. > It makes switching fun again! ;-) It's well written, > technicaly > accurate and > interesting, and it doesn't just throw the latest marketing > trends at > you > with no explanation of their history, like some switching > material > does. > > Also, CertificationZone has some good articles and study > materials > for > switching. > > By the way, switching isn't as dull as it might seem. The > spanning > tree > algorithm can be quite interesting to study. And there are > enhancements to > it now like 802.1s (multiple spanning trees) and 802.1w (rapid > spanning tree > protocol). > > Good luck! > > Priscilla Oppenheimer > > Nakul Malik wrote: > > > > Hi all, > > I started off studying routing and found it to be a topic > that > > interested me > > a lot. I just couldn't get enough of halabi Doyle and the > rest. > > I studied a > > lot, practiced a lot and was thrilled when I passed the > exam in > > beta. > > > > Next I started studying for switching. That didn't turn out > as > > well as I > > thought it would. I couldn't just work up the same level of > > interest. I have > > been analyzing the reasons and have come up with the > following: > > 1. I've never worked with switches much, so I don't know too > > much about > > them, as opposed to routers. > > 2. Study materials. > > > > I've been wondering, has anyone else faced similar problems > in > > their quest > > for CCNP. > > > > Also, could someone recommend some good materials/resources > for > > switching > > other than the official Cisco book? > > > > Any/all answers would be appreciated. > > Thanks. > > -N > > > > -- > > Nakul Malik > > > > H-342 > > New Rajendra Nagar > > New Delhi - 110060 > > > > Mobile: +91-9811424477 > > Ph: +91-11- 2582 3488 > > +91-11- 2585 0155 > > Fax:: +91-11- 2575 2904 > > > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy > Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75104&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
page 58, Interconnections, 2e Algorhyme I think that I shall never see A graph more lovely than a tree. A tree whose crucial property Is loop-free connectivity. A tree that must be sure to span So packets can reach every LAN. Firest, the root must be selected. By ID, it is elected. Least-cost paths from root are traced. In the tree, these paths are placed. A mesh is made by folks like me, Then bridges find a spanning tree. --Radia Perlman Tom Lisa wrote: > Priscilla, > > Didn't Radia write a poem that starts something like > "I have never seen a tree as lovely as a spanning tree?" > > BTW, is it still possible to get a "free" copy of 802.1s & w. > I looked on the IEEE site but couldn't find them. > > Prof. Tom Lisa, CCAI > Community College of Southern Nevada > Cisco ATC/Regional Networking Academy > "Cunctando restituit rem" > > Priscilla Oppenheimer wrote: > > Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin > Hamilton. It's > right up there with Doyle as one of the best networking books ever > written. > It makes switching fun again! ;-) It's well written, technicaly > accurate and > interesting, and it doesn't just throw the latest marketing trends at > you > with no explanation of their history, like some switching material > does. > > Also, CertificationZone has some good articles and study materials > for > switching. > > By the way, switching isn't as dull as it might seem. The spanning > tree > algorithm can be quite interesting to study. And there are > enhancements to > it now like 802.1s (multiple spanning trees) and 802.1w (rapid > spanning tree > protocol). > > Good luck! > > Priscilla Oppenheimer > > Nakul Malik wrote: > > > > Hi all, > > I started off studying routing and found it to be a topic that > > interested me > > a lot. I just couldn't get enough of halabi Doyle and the rest. > > I studied a > > lot, practiced a lot and was thrilled when I passed the exam in > > beta. > > > > Next I started studying for switching. That didn't turn out as > > well as I > > thought it would. I couldn't just work up the same level of > > interest. I have > > been analyzing the reasons and have come up with the following: > > 1. I've never worked with switches much, so I don't know too > > much about > > them, as opposed to routers. > > 2. Study materials. > > > > I've been wondering, has anyone else faced similar problems in > > their quest > > for CCNP. > > > > Also, could someone recommend some good materials/resources for > > switching > > other than the official Cisco book? > > > > Any/all answers would be appreciated. > > Thanks. > > -N > > > > -- > > Nakul Malik > > > > H-342 > > New Rajendra Nagar > > New Delhi - 110060 > > > > Mobile: +91-9811424477 > > Ph: +91-11- 2582 3488 > > +91-11- 2585 0155 > > Fax:: +91-11- 2575 2904 > > > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75110&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Priscilla, Didn't Radia write a poem that starts something like "I have never seen a tree as lovely as a spanning tree?" BTW, is it still possible to get a "free" copy of 802.1s & w. I looked on the IEEE site but couldn't find them. Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco ATC/Regional Networking Academy "Cunctando restituit rem" Priscilla Oppenheimer wrote: Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin Hamilton. It's right up there with Doyle as one of the best networking books ever written. It makes switching fun again! ;-) It's well written, technicaly accurate and interesting, and it doesn't just throw the latest marketing trends at you with no explanation of their history, like some switching material does. Also, CertificationZone has some good articles and study materials for switching. By the way, switching isn't as dull as it might seem. The spanning tree algorithm can be quite interesting to study. And there are enhancements to it now like 802.1s (multiple spanning trees) and 802.1w (rapid spanning tree protocol). Good luck! Priscilla Oppenheimer Nakul Malik wrote: > > Hi all, > I started off studying routing and found it to be a topic that > interested me > a lot. I just couldn't get enough of halabi Doyle and the rest. > I studied a > lot, practiced a lot and was thrilled when I passed the exam in > beta. > > Next I started studying for switching. That didn't turn out as > well as I > thought it would. I couldn't just work up the same level of > interest. I have > been analyzing the reasons and have come up with the following: > 1. I've never worked with switches much, so I don't know too > much about > them, as opposed to routers. > 2. Study materials. > > I've been wondering, has anyone else faced similar problems in > their quest > for CCNP. > > Also, could someone recommend some good materials/resources for > switching > other than the official Cisco book? > > Any/all answers would be appreciated. > Thanks. > -N > > -- > Nakul Malik > > H-342 > New Rajendra Nagar > New Delhi - 110060 > > Mobile: +91-9811424477 > Ph: +91-11- 2582 3488 > +91-11- 2585 0155 > Fax:: +91-11- 2575 2904 > > [EMAIL PROTECTED] **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75090&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: Studying Switching [7:75030]
Get a copy of Cisco LAN Switching by Kennedy Clark and Kevin Hamilton. It's right up there with Doyle as one of the best networking books ever written. It makes switching fun again! ;-) It's well written, technicaly accurate and interesting, and it doesn't just throw the latest marketing trends at you with no explanation of their history, like some switching material does. Also, CertificationZone has some good articles and study materials for switching. By the way, switching isn't as dull as it might seem. The spanning tree algorithm can be quite interesting to study. And there are enhancements to it now like 802.1s (multiple spanning trees) and 802.1w (rapid spanning tree protocol). Good luck! Priscilla Oppenheimer Nakul Malik wrote: > > Hi all, > I started off studying routing and found it to be a topic that > interested me > a lot. I just couldn't get enough of halabi Doyle and the rest. > I studied a > lot, practiced a lot and was thrilled when I passed the exam in > beta. > > Next I started studying for switching. That didn't turn out as > well as I > thought it would. I couldn't just work up the same level of > interest. I have > been analyzing the reasons and have come up with the following: > 1. I've never worked with switches much, so I don't know too > much about > them, as opposed to routers. > 2. Study materials. > > I've been wondering, has anyone else faced similar problems in > their quest > for CCNP. > > Also, could someone recommend some good materials/resources for > switching > other than the official Cisco book? > > Any/all answers would be appreciated. > Thanks. > -N > > -- > Nakul Malik > > H-342 > New Rajendra Nagar > New Delhi - 110060 > > Mobile: +91-9811424477 > Ph: +91-11- 2582 3488 > +91-11- 2585 0155 > Fax:: +91-11- 2575 2904 > > [EMAIL PROTECTED] > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75076&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Nakul, Hi! If you really want to learn about switching, I'd recommend picking up a couple of switches and learning "hands-on." It will give you a chance to play around with different configurations. If you've got the bux, go with a couple of 3550s (it'll pay off after you finish CCNP and go for CCIE). If you can't afford that, go with a couple 1912s instead. thanks, -Brad Ellis CCIE#5796 (R&S / Security) Network Learning Inc [EMAIL PROTECTED] www.optsys.net (Cisco hardware) ""Nakul Malik"" wrote in message news:[EMAIL PROTECTED] > Hi all, > I started off studying routing and found it to be a topic that interested me > a lot. I just couldn't get enough of halabi Doyle and the rest. I studied a > lot, practiced a lot and was thrilled when I passed the exam in beta. > > Next I started studying for switching. That didn't turn out as well as I > thought it would. I couldn't just work up the same level of interest. I have > been analyzing the reasons and have come up with the following: > 1. I've never worked with switches much, so I don't know too much about > them, as opposed to routers. > 2. Study materials. > > I've been wondering, has anyone else faced similar problems in their quest > for CCNP. > > Also, could someone recommend some good materials/resources for switching > other than the official Cisco book? > > Any/all answers would be appreciated. > Thanks. > -N > > -- > Nakul Malik > > H-342 > New Rajendra Nagar > New Delhi - 110060 > > Mobile: +91-9811424477 > Ph: +91-11- 2582 3488 > +91-11- 2585 0155 > Fax:: +91-11- 2575 2904 > > [EMAIL PROTECTED] > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75052&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying Switching [7:75030]
Hello Nakul, I had the same problem when studying for the Switching exam. I don't like switches. I know that routers and switching are two different devices and perform different functions, but routers make switches look stupid. I guess that they are two different colors. If you are trying to get your CCNP, the fact is is that sooner or later you'll have to get involved with switches at work. At first, I did not like switch work, but then, when you get some experience, you can end loving them. I used the Cisco Switching Book from the Cisco Press Preparation Library (not Certification library), the one that goes in the C Prep Library, you can buy this alone. Like all Cisco Press books, is overwhelming, bored and makes your eyes close, but it is the best material for the exam, excellent. Take care and good look - Original Message - From: "Nakul Malik" Date: Tue, 9 Sep 2003 06:30:54 GMT To: [EMAIL PROTECTED] Subject: Studying Switching [7:75030] Hi all, I started off studying routing and found it to be a topic that interested me a lot. I just couldn't get enough of halabi Doyle and the rest. I studied a lot, practiced a lot and was thrilled when I passed the exam in beta. Next I started studying for switching. That didn't turn out as well as I thought it would. I couldn't just work up the same level of interest. I have been analyzing the reasons and have come up with the following: 1. I've never worked with switches much, so I don't know too much about them, as opposed to routers. 2. Study materials. I've been wondering, has anyone else faced similar problems in their quest for CCNP. Also, could someone recommend some good materials/resources for switching other than the official Cisco book? Any/all answers would be appreciated. Thanks. -N -- Nakul Malik H-342 New Rajendra Nagar New Delhi - 110060 Mobile: +91-9811424477 Ph: +91-11- 2582 3488 +91-11- 2585 0155 Fax:: +91-11- 2575 2904 [EMAIL PROTECTED] **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Diego Martmnez Boqui -- __ Sign-up for your own personalized E-mail at Mail.com http://www.mail.com/?sr=signup CareerBuilder.com has over 400,000 jobs. Be smarter about your job search http://corp.mail.com/careers Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75056&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: Studying Switching [7:75030]
Kennedy Clark's book for lan Switching for CCIE... Larry Letterman Cisco Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nakul Malik Sent: Monday, September 08, 2003 11:31 PM To: [EMAIL PROTECTED] Subject: Studying Switching [7:75030] Hi all, I started off studying routing and found it to be a topic that interested me a lot. I just couldn't get enough of halabi Doyle and the rest. I studied a lot, practiced a lot and was thrilled when I passed the exam in beta. Next I started studying for switching. That didn't turn out as well as I thought it would. I couldn't just work up the same level of interest. I have been analyzing the reasons and have come up with the following: 1. I've never worked with switches much, so I don't know too much about them, as opposed to routers. 2. Study materials. I've been wondering, has anyone else faced similar problems in their quest for CCNP. Also, could someone recommend some good materials/resources for switching other than the official Cisco book? Any/all answers would be appreciated. Thanks. -N -- Nakul Malik H-342 New Rajendra Nagar New Delhi - 110060 Mobile: +91-9811424477 Ph: +91-11- 2582 3488 +91-11- 2585 0155 Fax:: +91-11- 2575 2904 [EMAIL PROTECTED] **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75039&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Studying Switching [7:75030]
Hi all, I started off studying routing and found it to be a topic that interested me a lot. I just couldn't get enough of halabi Doyle and the rest. I studied a lot, practiced a lot and was thrilled when I passed the exam in beta. Next I started studying for switching. That didn't turn out as well as I thought it would. I couldn't just work up the same level of interest. I have been analyzing the reasons and have come up with the following: 1. I've never worked with switches much, so I don't know too much about them, as opposed to routers. 2. Study materials. I've been wondering, has anyone else faced similar problems in their quest for CCNP. Also, could someone recommend some good materials/resources for switching other than the official Cisco book? Any/all answers would be appreciated. Thanks. -N -- Nakul Malik H-342 New Rajendra Nagar New Delhi - 110060 Mobile: +91-9811424477 Ph: +91-11- 2582 3488 +91-11- 2585 0155 Fax:: +91-11- 2575 2904 [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75030&t=75030 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Does anyone know of any other books? Thanks tu do wrote: Hi Mr.Deal, Thanks for the you excillent book Cisco PIX Firewalls. I bought two copies. One used at work, one read at home. It not only helped me pass CSPFA. When I need to review about IPSec, your book is always a handy, good source. Thanks again, Tu Do. **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html = = = = = = = = = = = = = = = = = = Please send replys to: [EMAIL PROTECTED] = = = = = = = = = = = = = = = = = = - Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74983&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Does anyone know of any other books? Thanks tu do wrote: Hi Mr.Deal, Thanks for the you excillent book Cisco PIX Firewalls. I bought two copies. One used at work, one read at home. It not only helped me pass CSPFA. When I need to review about IPSec, your book is always a handy, good source. Thanks again, Tu Do. **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html = = = = = = = = = = = = = = = = = = Please send replys to: [EMAIL PROTECTED] = = = = = = = = = = = = = = = = = = - Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74984&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Tu Do, Thanks for the kudos! And goo luck with your studies! Cheers! -- Richard A. Deal Visit my home page at http://home.cfl.rr.com/dealgroup/ Author of CCNA Cisco Certified Network Associate Study Guide (Exam 640-801), Cisco PIX Firewalls, CCNA Secrets Revealed!, CCNP Remote Access Exam Prep, CCNP Switching Exam Cram, and CCNP Cisco LAN Switch Configuration Exam Cram Cisco Test Prep author for QuizWare, providing the most comprehensive Cisco exams on the market. ""tu do"" wrote in message news:[EMAIL PROTECTED] > Hi Mr.Deal, > > Thanks for the you excillent book Cisco PIX Firewalls. I bought two copies. > One used at work, one read at home. It not only helped me pass CSPFA. When I > need to review about IPSec, your book is always a handy, good source. > > Thanks again, > > Tu Do. > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74964&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Hi Mr.Deal, Thanks for the you excillent book Cisco PIX Firewalls. I bought two copies. One used at work, one read at home. It not only helped me pass CSPFA. When I need to review about IPSec, your book is always a handy, good source. Thanks again, Tu Do. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74945&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Hey, it's Mr. Deal! I just wanted to thank you for writing the Exam Cram book for Switching:640-504. I just passed the "640-604" last week using your book alone. In fact, I wrote the most recent review on amazon. Good stuff, looking forward to more! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74927&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: New Switching Exam [7:74684]
Huge differences. I'm just finishing my Exam Cram book for Que Publishing on the new exam, and there is probably a 50-70% change in material. Out of all of the CCNP exams, this one definitely changed the most. MLS is completely revamped--CEF; new enhancements to STP--RSTP and other stuff; IOS configurations instead of CatOS (with few exceptions); new hardware; Metro Ethernet; tons of stuff on 802.1Q; Queuing techniques and IP telephony; new security stuff--VACLs and PVLANs, and many other things. In other words, studying the 604 material is not near enough for the new exam. Hope this helps! Cheers! -- Richard A. Deal Visit my home page at http://home.cfl.rr.com/dealgroup/ Author of CCNA Cisco Certified Network Associate Study Guide (Exam 640-801), Cisco PIX Firewalls, CCNA Secrets Revealed!, CCNP Remote Access Exam Prep, CCNP Switching Exam Cram, and CCNP Cisco LAN Switch Configuration Exam Cram Cisco Test Prep author for QuizWare, providing the most comprehensive Cisco exams on the market. ""Victor Tello"" wrote in message news:[EMAIL PROTECTED] > Please someone could comment what differences and new topics are included in > the new 642-811 exam versus the old version (640-604). > What new topics are not included in the Cisco Press book ? > Where could I find good info about these new topics ? > > Regards. > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74713&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: CCIE Security vs Routing & Switching [7:74664]
Hi there, If I wanted to be a CCIE, I would go for Security track or maybe the voice track, but I think the latter is too specialized. Security is something you need to know anyway, if you want to be a good and respected network professional. Companies will understand that you know the most important concepts of routing and switching when you pass your exam. I believe 50% of the CCIE security exam is still R&S related, isn't it? Personnally I wouldn't go for a CCIE exam (yet). I'm working as a self-employed consultant, I've got my CCNP and CCDP and in my opinion studying for CCIE takes too much effort for something, which doesn't bring me much additional value. If you look to the network market (here in Europe), companies don't necessarily need CCIEs, they prefer people with a much broader view. Maybe I would like to be a CCIE, but I don't want to go that "Long-and-windy-road" now. If you look to the market for the coming 2-3 years, you need to have (most of) folllowing skills, besides basic (CCNP/CCDP) R&S: - security, at least PIX or Checkpoint; basics of intrusion detection systems; - wireless, - VoIP, - SANs, - MPLS, - QoS, - Unix/Linux and Microsoft networking and server skills; - Know the basics of (how to configure) DNS, Radius, LDAP, Web servers, etc.; - Load balancers and other content related stuff. This list is far from exhaustive, but hey, you can't know everything. It also depends in which market you want to work. The SME market for example, loves people who have both networking and operating systems skills. Big companies, carriers or ISPs like it when you as a network professional can speak with and understand the server/system administrators or the service designers. If you want to go for the money, you should specialize in one or two topics, for example choose a hype like SAN, learn the systems of one or two vendors and there you go... I'm concentrating now on security. Next thing will be VoIP/QoS or more Linux/Microsoft networking and server skills. By the way, reading books or documentation from other network vendors like Juniper or Nortel, is also recommended. Then you will see that it is 'all the same' ... at least you could tell that to the HR people or managers... My two cents, Eric Brouwers - Original Message - From: "Bharani" To: Sent: Tuesday, September 02, 2003 7:37 PM Subject: Re: CCIE Security vs Routing & Switching [7:74664] > Dear Friend > > I would say Security would be better , since security plays a major > role in network these days , more over there are very less not of security > certified people around the globe, but one info security is not as easy as R > & S , any thing , wish you all the best > > Bani > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74690&t=74664 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
New Switching Exam [7:74684]
Please someone could comment what differences and new topics are included in the new 642-811 exam versus the old version (640-604). What new topics are not included in the Cisco Press book ? Where could I find good info about these new topics ? Regards. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74684&t=74684 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: CCIE Security vs Routing & Switching [7:74664]
Typically, you'd do the R&S ccie first. You'd need to know most of the R&S stuff anyhow to do the security exam. The only way I'd suggest going for the security exam first is if you're already a master of the security topics (PIX, IDS, VPN, etc). If you feel confident that you can totally master the security topics w/o much further study into security, then you might consider going after the security ccie exam first since you'll already have a thorough understanding of about half of the exam. Generally speaking, go for the R&S ccie first. thanks, -Brad Ellis CCIE#5796 (R&S / Security) Network Learning Inc [EMAIL PROTECTED] www.ccbootcamp.com (Cisco training) ""manny colon"" wrote in message news:[EMAIL PROTECTED] > Any suggestions on which path to follow? Is it recommended to follow the > routing and switching path first? > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74669&t=74664 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: CCIE Security vs Routing & Switching [7:74664]
Dear Friend I would say Security would be better , since security plays a major role in network these days , more over there are very less not of security certified people around the globe, but one info security is not as easy as R & S , any thing , wish you all the best Bani Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74673&t=74664 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
CCIE Security vs Routing & Switching [7:74664]
Any suggestions on which path to follow? Is it recommended to follow the routing and switching path first? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74664&t=74664 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: ATM PVCs Switching on Router 7200 [7:74094]
Hi Mohammad, You can not really switch an ATM PVC on a router, you need to have a switch (popularly called WAN Switch) for that. But even then, if you have 2 ATM PVCs facing different sides, you can exchange traffic between them, by IP routing. e.g. you have one PVC configured on interface atm 1/0 with IP 10.10.1.1/30 and another interface atm 1/1 with IP 10.10.2.1/30. Now both these interfaces will be talking to their respective counterparts on the other side, but on the router you can simply configure adequate IP routing and the router will get ATM cells from atm 1/0, convert them to IP packets, hand them to in IP shape to atm 1/1, which will again convert the IP packets to ATM cells and those cells will be sent out to remote location. Please revert in case more information is required. HTH Vikram -Original Message- From: Mohamed Saro [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 2:08 PM To: [EMAIL PROTECTED] Subject: ATM PVCs Switching on Router 7200 [7:74094] Can I switch PVC coming from on ATM interface to be connected to another PVC on another interface on the same 7200 router? Any configuration guidelines? **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74108&t=74094 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
ATM PVCs Switching on Router 7200 [7:74094]
Can I switch PVC coming from on ATM interface to be connected to another PVC on another interface on the same 7200 router? Any configuration guidelines? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74094&t=74094 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: Studying for CCNP switching Need a LAB??? [7:73174]
If you want to save money, do the research and do it in pieces. If you want it all there for you, buy the bundle. It just depends on how far you want to go with your investment dollars. It also depends on if you are planning on going further then just your ccnp. I learned a ton in setting up our lab and pieceing it together router by router. Good luck with your lab building =) ""i d"" wrote in message news:[EMAIL PROTECTED] > Hi I am beginning my studies for my CCNP. I work with routers and switches > at work, and Before that I also took the courses. But I want to have a full > CCNP lab now while I read on my own to fiddle around with, and incorporate > into my Solaris/Win2000/2003/Linux network. I was wondering what equipment > is necessary? > > Ok if someone would be so kind as to break it down by certification ex.. > what i need for swithing, routing etc > Then what would I need overall? > > Also has anyone put their CCNP lab equipment into a full network? If so > what does your network look like? Did you simulate separate LAN's/Countries > etc... > > P.S. Do you think it's better to buy it all at once or as needed for each > individual test? I know I could probably get it done by just reading and > through my job and previous schooling. But i really want a lab so i could > turn that lab upside down. I want to be able to handle any situation, i > cant very well bring down my work routers or switches, but it can be > simulated in a lab without fear of knocking out an entire county. > > Thanks for the help. > > I usually see on EBAY that they sell complete CCNP labs, what do you think > of going this route? Are they good? > > thanks sorry for the long winded post. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73191&t=73174 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Studying for CCNP switching Need a LAB??? [7:73174]
Hi I am beginning my studies for my CCNP. I work with routers and switches at work, and Before that I also took the courses. But I want to have a full CCNP lab now while I read on my own to fiddle around with, and incorporate into my Solaris/Win2000/2003/Linux network. I was wondering what equipment is necessary? Ok if someone would be so kind as to break it down by certification ex.. what i need for swithing, routing etc Then what would I need overall? Also has anyone put their CCNP lab equipment into a full network? If so what does your network look like? Did you simulate separate LAN's/Countries etc... P.S. Do you think it's better to buy it all at once or as needed for each individual test? I know I could probably get it done by just reading and through my job and previous schooling. But i really want a lab so i could turn that lab upside down. I want to be able to handle any situation, i cant very well bring down my work routers or switches, but it can be simulated in a lab without fear of knocking out an entire county. Thanks for the help. I usually see on EBAY that they sell complete CCNP labs, what do you think of going this route? Are they good? thanks sorry for the long winded post. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73174&t=73174 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CCNP Switching Exam [7:73053]
Do you have the Cisco Press book "Building Cisco Multilayer Switched Networks" by Karen Webb (hardback). The reason I'm asking is that my copy does not have a CD. Do you have a later edition? Shane -Original Message- From: Jen Yeung [mailto:[EMAIL PROTECTED] Sent: Saturday, July 26, 2003 5:12 AM To: [EMAIL PROTECTED] Subject: CCNP Switching Exam [7:73053] Hi, I just joined the group. I'm going to take the CCNP switching exam next month. I'm now studying the Cisco book and doing the practice exams on the CD (which came with the book). Any other suggestions on good practice exams besides that? Jen DISCLAIMER "This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer". Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73147&t=73053 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CCNP Switching Exam [7:73053]
Hi, The relevant Boson practice test should be okay - the Switching exam is fair game. Good Luck! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73054&t=73053 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
CCNP Switching Exam [7:73053]
Hi, I just joined the group. I'm going to take the CCNP switching exam next month. I'm now studying the Cisco book and doing the practice exams on the CD (which came with the book). Any other suggestions on good practice exams besides that? Jen Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73053&t=73053 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Switching exam tomorrow. 1 question. [7:72485]
Thanks, I appreciate the heads up. I think I'm ready. Just took short nap to let me study for a few more hours tonight. The only thing I am still having issues with is MAC address to ip multicast address. Even after the class I'm still not totally comfortable with that but I figure after a couple more hours I should have it locked in. David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72529&t=72485 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Switching exam tomorrow. 1 question. [7:72485]
I took the exam about 2 weeks ago and didn't get any sims. Good Luck, dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, July 17, 2003 12:21 PM To: [EMAIL PROTECTED] Subject: Switching exam tomorrow. 1 question. [7:72485] I'm taking the 640-604 BCMSN test tomorrow. Without divulging anything that might get anyone in trouble, I'm trying to find out what sort of simulations I can expect.I havn't really been able to find anything that would give me an idea of what they will be. Thanks, David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72512&t=72485 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Switching exam tomorrow. 1 question. [7:72485]
I'd imagine a fair amount Dave. I recently took the MCNS exam and it had a pretty fair amount of simulations. Will Gragido CISSP CCNP CIPTSS CCDA MCP Suite 325 9450 W. Bryn Mawr Ave. Rosemont, Il 60018 [EMAIL PROTECTED] "The Knowledge Behind The Network" -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, July 17, 2003 11:21 AM To: [EMAIL PROTECTED] Subject: Switching exam tomorrow. 1 question. [7:72485] I'm taking the 640-604 BCMSN test tomorrow. Without divulging anything that might get anyone in trouble, I'm trying to find out what sort of simulations I can expect.I havn't really been able to find anything that would give me an idea of what they will be. Thanks, David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72493&t=72485 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Switching exam tomorrow. 1 question. [7:72485]
I'm taking the 640-604 BCMSN test tomorrow. Without divulging anything that might get anyone in trouble, I'm trying to find out what sort of simulations I can expect.I havn't really been able to find anything that would give me an idea of what they will be. Thanks, David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72485&t=72485 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: BCMSN book vs CCIE LAN switching [7:72412]
Hi, If you are studying for CCIE, you need the LAN Switching book; I doubt whether there is an option here, you need the LAN Switching book.you will also like the material in the book. Good Luck Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72459&t=72412 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
BCMSN book vs CCIE LAN switching [7:72412]
I was wondering if it's worth getting the CCIE LAN switching book by Hamilton, if I have the old BCMSN book already. This is with respect to studying for the CCIE exam. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72412&t=72412 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Any LANE on CCNP switching [7:72197]
I don't remember any, but there may have been some on the test. You should at least know how ATM VLANs (and FDDI and Token Ring) are hooked up with Catalyst switches. In my training materials they at least touched on it... Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: David Vital [mailto:[EMAIL PROTECTED] Sent: Monday, July 14, 2003 12:53 AM To: [EMAIL PROTECTED] Subject: RE: Any LANE on CCNP switching [7:72197] it doesn't seem like anyone wants to commit and possibly tell you not to worry about LANE when you might have some questions on it in the test. From everything I have seen on line, in the books I have recently studied and from the BCMSN class I took last week, I would say NO> I don't think there are any LANE questions on the 640-604 test. David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72251&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Any LANE on CCNP switching [7:72197]
No Lane. I took the CCNP recert yesterday, No lane at all. ""Tiongster 84"" wrote in message news:[EMAIL PROTECTED] > Hi guys, > > I just want to make sure is there any LANE on CCNP switching? > > Thank you! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72243&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Any LANE on CCNP switching [7:72197]
it doesn't seem like anyone wants to commit and possibly tell you not to worry about LANE when you might have some questions on it in the test. From everything I have seen on line, in the books I have recently studied and from the BCMSN class I took last week, I would say NO> I don't think there are any LANE questions on the 640-604 test. David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72224&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Any LANE on CCNP switching [7:72197]
I passed the BCMSN test, but you can look at the Cisco documentation for what should be on the test. If you've taken any courses for the CCNP, or look at the info from Cisco, you will probably see that ATM, and LANE in specific, is a very small percentage of the material covered, if at all. So, if there are any questions on your particular test the percentage of them should be relatively small. You should be able to miss all of them and still pass, assuming that you get 100% on everything else. I sincerely doubt that Cisco would include more than 30% of the questions that are involving LANE... -Fred Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72210&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Any LANE on CCNP switching [7:72197]
""Tiongster 84"" wrote in message news:[EMAIL PROTECTED] > Hi guys, > > I just want to make sure is there any LANE on CCNP switching? I don't know, but what does the blueprint say? http://www.cisco.com/warp/public/10/wwtraining/certprog/testing/current_exams/640-604.html#examtop watch the wrap > > Thank you! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72204&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Any LANE on CCNP switching [7:72197]
Hello, For these types of questions, it's alwaysbest to refer to the cisco.com site... Best regards, Andre' -Original Message- From: Tiongster 84 [mailto:[EMAIL PROTECTED] Sent: Sunday, July 13, 2003 1:17 AM To: [EMAIL PROTECTED] Subject: Any LANE on CCNP switching [7:72197] Hi guys, I just want to make sure is there any LANE on CCNP switching? Thank you! For more information about Barclays Capital, please visit our web site at http://www.barcap.com. Internet communications are not secure and therefore the Barclays Group does not accept legal responsibility for the contents of this message. Although the Barclays Group operates anti-virus programmes, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Barclays Group. Replies to this email may be monitored by the Barclays Group for operational or business reasons. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72201&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Any LANE on CCNP switching [7:72197]
Hi guys, I just want to make sure is there any LANE on CCNP switching? Thank you! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72197&t=72197 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
fast switching v.s. cef switching [7:71815]
Can anyone tell me what's the difference between fast switching and cef switching? thanks first! Ellie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71905&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: fast switching v.s. cef switching [7:71862]
CEF is better than fast switching for sure. Distributed CEF however doesn't free up memory on the RSP per se, as the RSP still has to build up and store the CEF table. I am also not sure whether the VIP cards can't do switching on their own without CEF. You sure about this? Thanks, Zsombor At 09:25 PM 7/3/2003 +, Sales wrote: >Couple of other minor points to add. The fast switching cache is on the >RSP and uses it's memory as does CEF. You can distribute the CEF tables >to VIP (versatile interface processors) cards. This enables the VIP >cards to store and process the packets based on the CEF tables on the >VIP cards. Uses memory and CPU on the VIP and hence frees up the RSP >for other tasks. > >We use distributed CEF quite a bit along with Turbo ACL's for better >performance. > > >Ian >www.ccie4u.com >Rack Rentals > > > >-Original Message- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of >Zsombor Papp >Sent: Thursday, July 03, 2003 2:43 PM >To: [EMAIL PROTECTED] >Subject: Re: fast switching v.s. cef switching [7:71815] > >At 04:37 PM 7/3/2003 +, Jans van Deventer wrote: > >Does the CEF cache and Fast Switching cache reside in router memory? > >Yes. > > > And > >if so what makes CEF faster > >than Fast Switching? > >The cache structure is more efficient. > >Thanks, > >Zsombor > > > >Regards, > >Jans > > > > >Fast switching builds a forwarding cache on the fly, based on the >packets > > >that reach the router and need to be switched. CEF builds the "cache" >(CEF > > >table) based on the routing table, independently from the traffic. > > > > > >The fast switching cache does not (necessarily) contain all the >information > > >that's in the routing table; it starts out empty and entries are aged >out > > >of it later on. Consequently the first packet of every new "session" >going > > >through the router must be process switched, ie. a routing table >lookup >and > > >cache population need to take place before the packet can be >forwarded. > > > > > >The CEF table always contains all the information that the router has > > >access to, it changes (almost) immediately after the router receives >a > > >routing update. > > > > > >Thanks, > > > > > >Zsombor > > > > > >At 03:17 AM 7/3/2003 +, wj chou wrote: > > > > > > > > >>Can anyone tell me what's the difference between fast switching and >cef > > >>switching? > > >> > > >>thanks first! > > >> > > >>Ellie > >-- > > > >Jans van Deventer > >Phone: (55-61) 361-1466 > >Fax: (55-61) 234-8722 > >www.rhox.com.br > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71866&t=71862 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: fast switching v.s. cef switching [7:71862]
True CEF is preferred over FS. My point is by using DCEF the RSP is freed up from processing lookups (FIB and Adjacency Tables). The VIP's take that over. If you just have CEF enable and not DCEF the RSP does the work. That's why they came out with DCEF - to distribute a copy of the FIB and Adjacency tables to the VIP's so they can handle it and hence free up the RSP. Hope that helps, Ian www.ccie4u.com Rack Rentals -Original Message- From: Zsombor Papp [mailto:[EMAIL PROTECTED] Sent: Thursday, July 03, 2003 8:02 PM To: Sales Cc: [EMAIL PROTECTED] Subject: RE: fast switching v.s. cef switching [7:71862] CEF is better than fast switching for sure. Distributed CEF however doesn't free up memory on the RSP per se, as the RSP still has to build up and store the CEF table. I am also not sure whether the VIP cards can't do switching on their own without CEF. You sure about this? Thanks, Zsombor At 09:25 PM 7/3/2003 +, Sales wrote: >Couple of other minor points to add. The fast switching cache is on the >RSP and uses it's memory as does CEF. You can distribute the CEF tables >to VIP (versatile interface processors) cards. This enables the VIP >cards to store and process the packets based on the CEF tables on the >VIP cards. Uses memory and CPU on the VIP and hence frees up the RSP >for other tasks. > >We use distributed CEF quite a bit along with Turbo ACL's for better >performance. > > >Ian >www.ccie4u.com >Rack Rentals > > > >-Original Message- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of >Zsombor Papp >Sent: Thursday, July 03, 2003 2:43 PM >To: [EMAIL PROTECTED] >Subject: Re: fast switching v.s. cef switching [7:71815] > >At 04:37 PM 7/3/2003 +, Jans van Deventer wrote: > >Does the CEF cache and Fast Switching cache reside in router memory? > >Yes. > > > And > >if so what makes CEF faster > >than Fast Switching? > >The cache structure is more efficient. > >Thanks, > >Zsombor > > > >Regards, > >Jans > > > > >Fast switching builds a forwarding cache on the fly, based on the >packets > > >that reach the router and need to be switched. CEF builds the "cache" >(CEF > > >table) based on the routing table, independently from the traffic. > > > > > >The fast switching cache does not (necessarily) contain all the >information > > >that's in the routing table; it starts out empty and entries are aged >out > > >of it later on. Consequently the first packet of every new "session" >going > > >through the router must be process switched, ie. a routing table >lookup >and > > >cache population need to take place before the packet can be >forwarded. > > > > > >The CEF table always contains all the information that the router has > > >access to, it changes (almost) immediately after the router receives >a > > >routing update. > > > > > >Thanks, > > > > > >Zsombor > > > > > >At 03:17 AM 7/3/2003 +, wj chou wrote: > > > > > > > > >>Can anyone tell me what's the difference between fast switching and >cef > > >>switching? > > >> > > >>thanks first! > > >> > > >>Ellie > >-- > > > >Jans van Deventer > >Phone: (55-61) 361-1466 > >Fax: (55-61) 234-8722 > >www.rhox.com.br > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71869&t=71862 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: fast switching v.s. cef switching [7:71862]
Couple of other minor points to add. The fast switching cache is on the RSP and uses it's memory as does CEF. You can distribute the CEF tables to VIP (versatile interface processors) cards. This enables the VIP cards to store and process the packets based on the CEF tables on the VIP cards. Uses memory and CPU on the VIP and hence frees up the RSP for other tasks. We use distributed CEF quite a bit along with Turbo ACL's for better performance. Ian www.ccie4u.com Rack Rentals -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Zsombor Papp Sent: Thursday, July 03, 2003 2:43 PM To: [EMAIL PROTECTED] Subject: Re: fast switching v.s. cef switching [7:71815] At 04:37 PM 7/3/2003 +, Jans van Deventer wrote: >Does the CEF cache and Fast Switching cache reside in router memory? Yes. > And >if so what makes CEF faster >than Fast Switching? The cache structure is more efficient. Thanks, Zsombor >Regards, >Jans > > >Fast switching builds a forwarding cache on the fly, based on the packets > >that reach the router and need to be switched. CEF builds the "cache" (CEF > >table) based on the routing table, independently from the traffic. > > > >The fast switching cache does not (necessarily) contain all the information > >that's in the routing table; it starts out empty and entries are aged out > >of it later on. Consequently the first packet of every new "session" going > >through the router must be process switched, ie. a routing table lookup and > >cache population need to take place before the packet can be forwarded. > > > >The CEF table always contains all the information that the router has > >access to, it changes (almost) immediately after the router receives a > >routing update. > > > >Thanks, > > > >Zsombor > > > >At 03:17 AM 7/3/2003 +, wj chou wrote: > > > > > >>Can anyone tell me what's the difference between fast switching and cef > >>switching? > >> > >>thanks first! > >> > >>Ellie >-- > >Jans van Deventer >Phone: (55-61) 361-1466 >Fax: (55-61) 234-8722 >www.rhox.com.br > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71862&t=71862 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: fast switching v.s. cef switching [7:71815]
At 04:37 PM 7/3/2003 +, Jans van Deventer wrote: >Does the CEF cache and Fast Switching cache reside in router memory? Yes. > And >if so what makes CEF faster >than Fast Switching? The cache structure is more efficient. Thanks, Zsombor >Regards, >Jans > > >Fast switching builds a forwarding cache on the fly, based on the packets > >that reach the router and need to be switched. CEF builds the "cache" (CEF > >table) based on the routing table, independently from the traffic. > > > >The fast switching cache does not (necessarily) contain all the information > >that's in the routing table; it starts out empty and entries are aged out > >of it later on. Consequently the first packet of every new "session" going > >through the router must be process switched, ie. a routing table lookup and > >cache population need to take place before the packet can be forwarded. > > > >The CEF table always contains all the information that the router has > >access to, it changes (almost) immediately after the router receives a > >routing update. > > > >Thanks, > > > >Zsombor > > > >At 03:17 AM 7/3/2003 +, wj chou wrote: > > > > > >>Can anyone tell me what's the difference between fast switching and cef > >>switching? > >> > >>thanks first! > >> > >>Ellie >-- > >Jans van Deventer >Phone: (55-61) 361-1466 >Fax: (55-61) 234-8722 >www.rhox.com.br > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71847&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RES: fast switching v.s. cef switching [7:71815]
Henrique Issamu Terada wrote: > Besides, load balance in CEF considers origin/destination , whereas Fast > Switching only makes load balance by destination . > Of course, there is per-packet in both , also. Actually, there is no per-packet load balancing in fast switching. The only way to get it is to disable route caching completely, forcing process switching, or use CEF and 'ip load-sharing per-packet'. Regards, Marco. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71842&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: fast switching v.s. cef switching [7:71815]
Zsombor explained it pretty well but if you want more detail: http://www.cisco.com/en/US/customer/tech/tk827/tk831/technologies_white_paper09186a00800a62d9.shtml#express Dave Jans van Deventer wrote: > Does the CEF cache and Fast Switching cache reside in router memory? And > if so what makes CEF faster > than Fast Switching? > > Regards, > Jans > > >>Fast switching builds a forwarding cache on the fly, based on the packets >>that reach the router and need to be switched. CEF builds the "cache" (CEF >>table) based on the routing table, independently from the traffic. >> >>The fast switching cache does not (necessarily) contain all the information >>that's in the routing table; it starts out empty and entries are aged out >>of it later on. Consequently the first packet of every new "session" going >>through the router must be process switched, ie. a routing table lookup and >>cache population need to take place before the packet can be forwarded. >> >>The CEF table always contains all the information that the router has >>access to, it changes (almost) immediately after the router receives a >>routing update. >> >>Thanks, >> >>Zsombor >> >>At 03:17 AM 7/3/2003 +, wj chou wrote: >> >> >> >>>Can anyone tell me what's the difference between fast switching and cef >>>switching? >>> >>>thanks first! >>> >>>Ellie >> -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Government can do something for the people only in proportion as it can do something to the people." -- Thomas Jefferson Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71844&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RES: fast switching v.s. cef switching [7:71815]
Besides, load balance in CEF considers origin/destination , whereas Fast Switching only makes load balance by destination . Of course, there is per-packet in both , also. > _ > Henrique Issamu Terada, CCIE # 7460 > IT Support - Open Network > CPM S.A. - Tecnologia criando valor > Tel.: 55 11 4196-0710 > Fax: 55 11 4196-0900 > [EMAIL PROTECTED] > www.cpm.com.br > -- > --- > Esta mensagem pode conter informagco confidencial e/ou privilegiada. Se > vocj nco for o destinatario ou a pessoa autorizada a receber esta > mensagem, nco pode usar, copiar ou divulgar as informagues nela contidas > ou tomar qualquer agco baseada nessas informagues. Se vocj recebeu esta > mensagem por engano, por favor avise imediatamente o remetente, > respondendo o e-mail e em seguida apague-o. Agradecemos sua cooperagco. > > This message may contain confidential and/or privileged information. If > you are not the addressee or authorized to receive this for the addressee, > you must not use, copy, disclose or take any action based on this message > or any information herein. If you have received this message in error, > please advise the sender immediately by reply e-mail and delete this > message. Thank you for your cooperation. > > > -Mensagem original- > De: Zsombor Papp [SMTP:[EMAIL PROTECTED] > Enviada em: quinta-feira, 3 de julho de 2003 12:06 > Para: [EMAIL PROTECTED] > Assunto: Re: fast switching v.s. cef switching [7:71815] > > Fast switching builds a forwarding cache on the fly, based on the packets > that reach the router and need to be switched. CEF builds the "cache" (CEF > > table) based on the routing table, independently from the traffic. > > The fast switching cache does not (necessarily) contain all the > information > that's in the routing table; it starts out empty and entries are aged out > of it later on. Consequently the first packet of every new "session" going > > through the router must be process switched, ie. a routing table lookup > and > cache population need to take place before the packet can be forwarded. > > The CEF table always contains all the information that the router has > access to, it changes (almost) immediately after the router receives a > routing update. > > Thanks, > > Zsombor > > At 03:17 AM 7/3/2003 +, wj chou wrote: > >Can anyone tell me what's the difference between fast switching and cef > >switching? > > > >thanks first! > > > >Ellie > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.495 / Virus Database: 294 - Release Date: 30/06/2003 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.495 / Virus Database: 294 - Release Date: 30/06/2003 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71840&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: fast switching v.s. cef switching [7:71815]
Does the CEF cache and Fast Switching cache reside in router memory? And if so what makes CEF faster than Fast Switching? Regards, Jans >Fast switching builds a forwarding cache on the fly, based on the packets >that reach the router and need to be switched. CEF builds the "cache" (CEF >table) based on the routing table, independently from the traffic. > >The fast switching cache does not (necessarily) contain all the information >that's in the routing table; it starts out empty and entries are aged out >of it later on. Consequently the first packet of every new "session" going >through the router must be process switched, ie. a routing table lookup and >cache population need to take place before the packet can be forwarded. > >The CEF table always contains all the information that the router has >access to, it changes (almost) immediately after the router receives a >routing update. > >Thanks, > >Zsombor > >At 03:17 AM 7/3/2003 +0000, wj chou wrote: > > >>Can anyone tell me what's the difference between fast switching and cef >>switching? >> >>thanks first! >> >>Ellie -- Jans van Deventer Phone: (55-61) 361-1466 Fax: (55-61) 234-8722 www.rhox.com.br Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71839&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: fast switching v.s. cef switching [7:71815]
Fast switching builds a forwarding cache on the fly, based on the packets that reach the router and need to be switched. CEF builds the "cache" (CEF table) based on the routing table, independently from the traffic. The fast switching cache does not (necessarily) contain all the information that's in the routing table; it starts out empty and entries are aged out of it later on. Consequently the first packet of every new "session" going through the router must be process switched, ie. a routing table lookup and cache population need to take place before the packet can be forwarded. The CEF table always contains all the information that the router has access to, it changes (almost) immediately after the router receives a routing update. Thanks, Zsombor At 03:17 AM 7/3/2003 +, wj chou wrote: >Can anyone tell me what's the difference between fast switching and cef >switching? > >thanks first! > >Ellie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71831&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
fast switching v.s. cef switching [7:71815]
Can anyone tell me what's the difference between fast switching and cef switching? thanks first! Ellie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71815&t=71815 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CCNP Switching [7:71747]
Hi, I took it last week. Not difficult; read and understand the Cisco Press Switching Certification Guide and know the various switch types. It should be fine. Almost everything is covered except ATM and Token Ring. Good Luck. Mwalie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71764&t=71747 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
CCNP Switching [7:71747]
Hi all, I'm planning to take CCNP Switching 640-604 in next two weeks and i'm wondering if any has any feedback or advise for me. Regards, Ayla Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71747&t=71747 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed BGP Beta and Switching 640-604 [7:71115]
Grant, Thanks for your suggestion, though I am not sure what the 350-001 exam is all about - CCIE written? Honestly, I doubt whether that is my goal.I will not be able to get the necessary equipment to play with. Also, in my country, I will be overqualified :) That is correct: in some countries, being a CCIE means being overqualified. In any case, I am actually already overqualified when it comes to the company employment situation in my country; I can only work as a consultant and/or Instructor :). Thanks. Mwalie Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71125&t=71115 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed BGP Beta and Switching 640-604 [7:71115]
Hi,Mwalie Congratulations! I suggest you to take 350-001 exam, I'm sure you can pass it. Mwalie W wrote: > > Hi All, > > Today, I have double joy :) > > I today did Switching (640-604) well, getting 987/1000 to > complete my quest for CCDP. > > Then when I reached my apartment, there was a letter from Cisco > (well, from Prometric) that I had passed BGP Beta with > 827/1000, passing score 755. BGP was such a challenging exam > (to me). > > Now, I will begin studying MPLS and QoS to become a CCIP. > > I am indebted to a few members here, especially Priscilla > Oppenehimer, Howard Berkowitz, Cisco Nuts, Grant and many many > others. > > Later, I will ask for advice regarding what to do to become a > network consultant :) > > Mwalie > CCDP/CCDA/CCNA/i-Net+/e-Biz+ > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71122&t=71115 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Passed BGP Beta and Switching 640-604 [7:71115]
Hi All, Today, I have double joy :) I today did Switching (640-604) well, getting 987/1000 to complete my quest for CCDP. Then when I reached my apartment, there was a letter from Cisco (well, from Prometric) that I had passed BGP Beta with 827/1000, passing score 755. BGP was such a challenging exam (to me). Now, I will begin studying MPLS and QoS to become a CCIP. I am indebted to a few members here, especially Priscilla Oppenehimer, Howard Berkowitz, Cisco Nuts, Grant and many many others. Later, I will ask for advice regarding what to do to become a network consultant :) Mwalie CCDP/CCDA/CCNA/i-Net+/e-Biz+ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71115&t=71115 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How to Configure F/R switching with CIR limit [7:70669]
sorry i forgot, you must enable frame-relay traffic-shapping on interface. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70704&t=70669 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: How to Configure F/R switching with CIR limit [7:70669]
you can use map-class, to create it go to configuration mode and write (config-if)#map-class frame-relay [name of class] , after that u join in (config-map-class) mode and there u can describe cir with frame-relay cir [bits per second], class map can be apply on interface with frame-relay class [name of map-class] to verefy it that w0rk, use command show traffic-shape Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70702&t=70669 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to Configure F/R switching with CIR limit [7:70669]
Look in the Bruce caslow book about configuring frame switch. Very helpful. - Original Message - From: "Pichit Ruangroj" To: Sent: Sunday, June 15, 2003 9:45 AM Subject: How to Configure F/R switching with CIR limit [7:70669] > Hi, > I'd like to configure a router to act as a F/R switching and also I'd > like to configure the CIR on the F/R switching. I want to use it for doing > FRTS lab. > Pichai Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70677&t=70669 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
How to Configure F/R switching with CIR limit [7:70669]
Hi, I'd like to configure a router to act as a F/R switching and also I'd like to configure the CIR on the F/R switching. I want to use it for doing FRTS lab. Pichai Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70669&t=70669 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Took the new switching this weekend [7:70225]
The help function worked!? Cool! (I assume you mean you could type a question mark and see possibilities?) Way to go Cisco. That's a good change, considering the fact that "real network engineers" depend on the question mark. :-) Priscilla Weaselboy wrote: > > I took the new switching beta this weekend (I'll find out if I > passed > sometime in the future). Since I passed the old version, I > figured I'm > qualified to make a comparison. > > The old exam was ridiculously heavy with type-in-the-command > type > questions - a pure memorization-fest. The new one is much more > theory > and how technology works. I also noticed a bunch of things > covered that > I would have thought belonged on the routing exam, but maybe > they're > trying to spread things around a bit more. > > I had one fairly easy simulation question. You had to configure > like > four simple things, which means issuing several commands; but > the help > function worked, so you could hash things out pretty easily. I > always > wonder about whether your suppose to save your configuration as > part of > the exercise; hopefully I don't get marked down for doing that! > > Here are some acronyms you should know: MST, VRRP, RSTP, SPAN, > CoS, > HSRP, AVVID and VLAN Tunneling. I would also make sure you > understand > how ACLs and the VLAN equivalent work (VLAN filtering maybe, I > don't > remember what it's called). > > It didn't seem that hard, but I'll find out in a few months. > Anybody > else take it? > > The WB > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70230&t=70225 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Took the new switching this weekend [7:70225]
I took the new switching beta this weekend (I'll find out if I passed sometime in the future). Since I passed the old version, I figured I'm qualified to make a comparison. The old exam was ridiculously heavy with type-in-the-command type questions - a pure memorization-fest. The new one is much more theory and how technology works. I also noticed a bunch of things covered that I would have thought belonged on the routing exam, but maybe they're trying to spread things around a bit more. I had one fairly easy simulation question. You had to configure like four simple things, which means issuing several commands; but the help function worked, so you could hash things out pretty easily. I always wonder about whether your suppose to save your configuration as part of the exercise; hopefully I don't get marked down for doing that! Here are some acronyms you should know: MST, VRRP, RSTP, SPAN, CoS, HSRP, AVVID and VLAN Tunneling. I would also make sure you understand how ACLs and the VLAN equivalent work (VLAN filtering maybe, I don't remember what it's called). It didn't seem that hard, but I'll find out in a few months. Anybody else take it? The WB Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70225&t=70225 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Took the new switching this weekend [7:70225]
I didn't notice grayed out options, but the help function definitely worked; I needed it to remember how to do one particular task... On Thu, 2003-06-05 at 16:58, Priscilla Oppenheimer wrote: > The help function worked!? Cool! (I assume you mean you could type a > question mark and see possibilities?) Way to go Cisco. That's a good change, > considering the fact that "real network engineers" depend on the question > mark. :-) > > Priscilla > > Weaselboy wrote: > > > > I took the new switching beta this weekend (I'll find out if I > > passed > > sometime in the future). Since I passed the old version, I > > figured I'm > > qualified to make a comparison. > > > > The old exam was ridiculously heavy with type-in-the-command > > type > > questions - a pure memorization-fest. The new one is much more > > theory > > and how technology works. I also noticed a bunch of things > > covered that > > I would have thought belonged on the routing exam, but maybe > > they're > > trying to spread things around a bit more. > > > > I had one fairly easy simulation question. You had to configure > > like > > four simple things, which means issuing several commands; but > > the help > > function worked, so you could hash things out pretty easily. I > > always > > wonder about whether your suppose to save your configuration as > > part of > > the exercise; hopefully I don't get marked down for doing that! > > > > Here are some acronyms you should know: MST, VRRP, RSTP, SPAN, > > CoS, > > HSRP, AVVID and VLAN Tunneling. I would also make sure you > > understand > > how ACLs and the VLAN equivalent work (VLAN filtering maybe, I > > don't > > remember what it's called). > > > > It didn't seem that hard, but I'll find out in a few months. > > Anybody > > else take it? > > > > The WB Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70275&t=70225 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Took the new switching this weekend [7:70225]
When I took the CCNP Remote access exam last month I was surprised to see the '?' work in the simulator questions. It actually went even farther, it grayed out the commands that don't apply to the sim, and bolded the 4 or 5 that were possible answers. Almost made it TOO easy at that point. Mike -Original Message- From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED] Sent: Thursday, June 05, 2003 6:58 PM To: [EMAIL PROTECTED] Subject: RE: Took the new switching this weekend [7:70225] The help function worked!? Cool! (I assume you mean you could type a question mark and see possibilities?) Way to go Cisco. That's a good change, considering the fact that "real network engineers" depend on the question mark. :-) Priscilla Weaselboy wrote: > > I took the new switching beta this weekend (I'll find out if I > passed > sometime in the future). Since I passed the old version, I > figured I'm > qualified to make a comparison. > > The old exam was ridiculously heavy with type-in-the-command > type > questions - a pure memorization-fest. The new one is much more > theory > and how technology works. I also noticed a bunch of things > covered that > I would have thought belonged on the routing exam, but maybe > they're > trying to spread things around a bit more. > > I had one fairly easy simulation question. You had to configure > like > four simple things, which means issuing several commands; but > the help > function worked, so you could hash things out pretty easily. I > always > wonder about whether your suppose to save your configuration as > part of > the exercise; hopefully I don't get marked down for doing that! > > Here are some acronyms you should know: MST, VRRP, RSTP, SPAN, > CoS, > HSRP, AVVID and VLAN Tunneling. I would also make sure you > understand > how ACLs and the VLAN equivalent work (VLAN filtering maybe, I > don't > remember what it's called). > > It didn't seem that hard, but I'll find out in a few months. > Anybody > else take it? > > The WB Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70260&t=70225 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problem in switching back to Primary Interface [7:69959]
here is the configuration pan_2503#show run pan_2503#show running-config Building configuration... Current configuration: ! version 12.0 service timestamps debug uptime service timestamps log uptime service password-encryption ! hostname pan_2503 ! enable secret 5 $1$Ww0Q$Bq3iGZoYdSfLrnDi0/K3y1 enable password 7 0458040B1B2440 ! username BTNL_AMB password 7 083B55560C15 username BTNL_GGN password 7 01091F1C5E07 ! class-map match-any match none ! ! ! ip subnet-zero no ip finger no ip domain-lookup ! isdn switch-type basic-net3 ! ! process-max-time 200 ! interface Loopback0 ip address 10.10.19.39 255.255.255.240 no ip directed-broadcast ! interface Ethernet0 ip address 172.17.10.1 255.255.255.0 ip helper-address 172.17.2.19 no ip directed-broadcast bridge-group 1 ! interface Serial0 no ip address no ip directed-broadcast no ip mroute-cache shutdown ! interface Serial1 description # Link For Gurgaon # backup delay 15 30 backup interface BRI0 ip address 10.10.17.10 255.255.255.252 no ip directed-broadcast no ip proxy-arp encapsulation ppp no ip mroute-cache ! interface BRI0 ip address 10.10.17.10 255.255.255.252 no ip directed-broadcast encapsulation ppp dialer idle-timeout 2000 dialer string 95118002256 dialer load-threshold 1 either dialer-group 1 isdn switch-type basic-net3 ppp authentication chap ppp multilink ! ip classless ip route 0.0.0.0 0.0.0.0 10.10.17.9 ip route 172.17.0.0 255.255.0.0 10.10.17.9 no ip http server ! access-list 20 permit 10.10.17.9 access-list 20 permit 172.17.8.150 access-list 20 permit 172.17.9.21 access-list 20 permit 172.17.3.15 access-list 20 permit 172.17.10.2 access-list 20 permit 172.17.9.2 access-list 20 permit 172.17.3.120 access-list 20 permit 0.0.0.120 255.255.255.0 dialer-list 1 protocol ip permit snmp-server engineID local 000902D058ADE871 snmp-server community private RO bridge 1 protocol ieee banner login ^CUNAUTHORIZED ACCESS TO THIS NETWORK DEVICE IS PROHIBITED. You mus t have explicit permission to access or configure this device. All activities performed on this device may be logged.^C ! line con 0 transport input none line aux 0 line vty 0 4 privilege level 0 password 7 1506041907222A20253A3B login ! end pan_2503# Regards Ravi Tyagi - jvd wrote:Hi, Can you paste relevant pieces of your configuration so we can see what's configured? My guess is that you have some keepalive problem. Regards, Catch all the cricket action. Download Yahoo! Score tracker Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69971&t=69959 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problem in switching back to Primary Interface [7:69959]
Hi, Can you paste relevant pieces of your configuration so we can see what's configured? My guess is that you have some keepalive problem. Regards, Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69965&t=69959 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Problem in switching back to Primary Interface [7:69959]
Dear All, My router is having problem in switching back to primary interface. Primary interface is E1 and serial interface is backuped by BRI interface. The serial interface becomes active again only after giving the commands "shutdown" and "no shutdown" or restarting the router. What are the other debug commands to find the possible reason for this strange behaviour ? Any help will be appeciated. Following is output of "debug backup" pan_2503#debug backup Backup events debugging is on pan_2503# 1d11h: %LINK-3-UPDOWN: Interface Serial1, changed state to down 1d11h: BACKUP(Serial1): event = primary went down 1d11h: BACKUP(Serial1): changed state to "waiting to backup" 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to down 1d11h: BACKUP(Serial1): event = timer expired 1d11h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down 1d11h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down 1d11h: BACKUP(Serial1): secondary interface (BRI0) made active 1d11h: BACKUP(Serial1): changed state to "backup mode" 1d11h: %LINK-3-UPDOWN: Interface BRI0, changed state to up 1d11h: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 87 changed to up 1d11h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up 1d11h: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up 1d11h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up 1d11h: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 95118002256 gur_3660 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:2, changed state to up 1d11h: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to 95118002256 gur_3660 pan_2503# pan_2503# 1d11h: %LINK-3-UPDOWN: Interface Serial1, changed state to up 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to up 1d11h: BACKUP(Serial1): event = primary came up 1d11h: BACKUP(Serial1): changed state to "waiting to revert" 1d11h: BACKUP(Serial1): event = timer expired 1d11h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down 1d11h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down 1d11h: BACKUP(Serial1): secondary interface (BRI0) moved to standby 1d11h: BACKUP(Serial1): changed state to "normal operation" 1d11h: %LINK-5-CHANGED: Interface BRI0, changed state to standby mode 1d11h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down 1d11h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down 1d11h: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from unknown , call la sted 91 seconds 1d11h: %ISDN-6-DISCONNECT: Interface BRI0:2 disconnected from unknown , call la sted 89 seconds 1d11h: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0, TEI 87 changed to down 1d11h: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 87 changed to down 1d11h: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:2, changed state to down 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to down pan_2503# pan_2503#conf pan_2503#configure t pan_2503#configure terminal Enter configuration commands, one per line. End with CNTL/Z. pan_2503(config)#int pan_2503(config)#interface ser pan_2503(config)#interface serial 1 pan_2503(config-if)#shu pan_2503(config-if)#shutdown pan_2503(config-if)#shutdown 1d11h: BACKUP(Serial1): event = interface shutdown 1d11h: BACKUP(Serial1): secondary interface (BRI0) moved to standby 1d11h: BACKUP(Serial1): changed state to "disabled" 1d11h: %LINK-5-CHANGED: Interface Serial1, changed state to administratively dow n 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to downno shutdown pan_2503(config-if)#^Z pan_2503# 1d11h: BACKUP(Serial1): event = interface unshut 1d11h: BACKUP(Serial1): changed state to "initializing" 1d11h: %SYS-5-CONFIG_I: Configured from console by vty0 (172.17.10.2) 1d11h: BACKUP(Serial1): event = timer expired 1d11h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down 1d11h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down 1d11h: BACKUP(Serial1): secondary interface (BRI0) made active 1d11h: BACKUP(Serial1): changed state to "backup mode" 1d11h: %LINK-3-UPDOWN: Interface Serial1, changed state to up 1d11h: %LINK-3-UPDOWN: Interface BRI0, changed state to up 1d11h: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 88 changed to up 1d11h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to up 1d11h: BACKUP(Serial1): event = primary came up 1d11h: BACKUP(Serial1): changed state to "waiting to revert" pan_2503# 1d11h: BACKUP(Serial1): event = timer expired 1d11h: BACKUP(Se
Re: Tag Switching Vs Multicast [7:69821]
At 1:24 PM -0400 5/29/03, Kazan, Naim wrote: >Howard, > >I would appreciate your view and the group on which one you guys would >prefer, Tag switching or Multicasting. I'm not really sure what you are trying to do. You can multicast with or without tag switching/MPLS. I'm not a Windows person, so you'll have to help me out. Is the Norton tool the source of the multicast -- in other words, does it take unicasts and replicate them? If so, why do you think the problem is in the network rather than the host? >We having been running into problems >with doing multiple windows XP imaging that can only handle up to 8 >computers at a time. Multicast is enable at the layer 2 & 3 but still can't >run more than 8 multicast sessions using Norton tool to accept clients for >multicast. Once it receives the MAC address of the computer we send a >session out to image about 8 computers. The number of computer will >fluctuate doing more than 8 and sometimes only capable of doing no more than >3. If we do more than that it freezes up at 25% completion rate of the >image. We have over a thousand computers to upgrade to windows XP by mid to >late June. Our network has 6500 serious switches along with 7507 core >routers. The 6500 handle both layer2/3 functions. Any help will go a long >way. Thank you in advance for everyone's input in this matter. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69821&t=69821 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Tag Switching Vs Multicast [7:69797]
At 05:24 PM 5/29/2003 +, Kazan, Naim wrote: >Howard, > >I would appreciate your view and the group on which one you guys would >prefer, Tag switching or Multicasting. We having been running into problems >with doing multiple windows XP imaging that can only handle up to 8 >computers at a time. Multicast is enable at the layer 2 & 3 but still can't >run more than 8 multicast sessions using Norton tool to accept clients for >multicast. Once it receives the MAC address of the computer we send a >session out to image about 8 computers. The number of computer will >fluctuate doing more than 8 and sometimes only capable of doing no more than >3. If we do more than that it freezes up at 25% completion rate of the >image. We have over a thousand computers to upgrade to windows XP by mid to >late June. Our network has 6500 serious switches along with 7507 core >routers. The 6500 handle both layer2/3 functions. Any help will go a long >way. Thank you in advance for everyone's input in this matter. Sounds to me like you need a better multi-cast source vs changes in your network. Where does tag switching fit into this? >-Original Message- >From: Howard C. Berkowitz >To: [EMAIL PROTECTED] >Sent: 5/28/03 3:50 PM >Subject: Re: Packet retransmit questiion [7:69715] > >At 6:46 PM + 5/28/03, Robert Perez wrote: > >Hi all, > > > >I have a question on the CCIE 350-001 test. I have heard differing >opinions > >on this but when traffic crosses a WAN connection and there are >problems who > >does the retransmit?? Host or RTR?? > > > >1.) In Frame relay there is a line hit or corrupt packet on the WAn, >who > >retransmits, should be the source router correct? > > > >2.) In a point to point circuit w/HDLC there is a line hit or corrupt >packet > >who retransmits, should be the source router correct?? > > > >3.) In a bridged environment with a WAN a T-1 takes a line hit or >corrupt > >packet who retrnasmits, should be the source host correct?? > >In all cases, the host, if you are running IP protocols that even >specify retransmission. TCP does, but UDP does not. RPC over UDP >retransmits. > >The only exception where the router would retransmit would be if you >are running X.25, LAP-B, SSCOP, or SDLC. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69813&t=69797 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Tag Switching Vs Multicast [7:69797]
Howard, I would appreciate your view and the group on which one you guys would prefer, Tag switching or Multicasting. We having been running into problems with doing multiple windows XP imaging that can only handle up to 8 computers at a time. Multicast is enable at the layer 2 & 3 but still can't run more than 8 multicast sessions using Norton tool to accept clients for multicast. Once it receives the MAC address of the computer we send a session out to image about 8 computers. The number of computer will fluctuate doing more than 8 and sometimes only capable of doing no more than 3. If we do more than that it freezes up at 25% completion rate of the image. We have over a thousand computers to upgrade to windows XP by mid to late June. Our network has 6500 serious switches along with 7507 core routers. The 6500 handle both layer2/3 functions. Any help will go a long way. Thank you in advance for everyone's input in this matter. -Original Message- From: Howard C. Berkowitz To: [EMAIL PROTECTED] Sent: 5/28/03 3:50 PM Subject: Re: Packet retransmit questiion [7:69715] At 6:46 PM + 5/28/03, Robert Perez wrote: >Hi all, > >I have a question on the CCIE 350-001 test. I have heard differing opinions >on this but when traffic crosses a WAN connection and there are problems who >does the retransmit?? Host or RTR?? > >1.) In Frame relay there is a line hit or corrupt packet on the WAn, who >retransmits, should be the source router correct? > >2.) In a point to point circuit w/HDLC there is a line hit or corrupt packet >who retransmits, should be the source router correct?? > >3.) In a bridged environment with a WAN a T-1 takes a line hit or corrupt >packet who retrnasmits, should be the source host correct?? In all cases, the host, if you are running IP protocols that even specify retransmission. TCP does, but UDP does not. RPC over UDP retransmits. The only exception where the router would retransmit would be if you are running X.25, LAP-B, SSCOP, or SDLC. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69797&t=69797 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Ccie routing and switching written exam [7:69610]
Hi All , Any preparation tips of the ccie Routing and Switching written exam from the folks who have recently taken it. Thanks Asif -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Johnny Routin Sent: Tuesday, May 27, 2003 1:30 PM To: [EMAIL PROTECTED] Subject: Re: http://home.attbi.com/~blaga/MPLS.htm [7:69570] Uhhh... lemme guess... on the link thats provided on that web page?!? Do I win the prize? Surely this is a stupidity test! -- Johnny Routin ""ian williams"" wrote in message news:[EMAIL PROTECTED] > Does anyone know where I can downloaded the version of IOS linked on > http://home.attbi.com/~blaga/MPLS.htm Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69610&t=69610 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6 [7:65832]
Thanks for the enlightening explanation, Priscilla. I know experts like you in this group will not let some funny answers go, that would confuse the subject more... thanks again Thanks also to others who answered... - Original Message - From: "Priscilla Oppenheimer" To: Sent: Friday, March 21, 2003 2:04 AM Subject: Re: Difference on L3 switching of Cat4500 and Cat6 [7:65832] > Robert Edmonds wrote: > > > > Actually, Multiprotocol Label Switch is MPLS. MLS is > > MultiLayer Switching. > > This refers to a switch that can do not noly what Kiran said > > about L3 > > switching, but can make forwarding decisions based on higher > > level > > protocols, such as tcp, udp, etc. > > Oh dear, this has really gotten funny. > > MLS is neither MPLS nor switching based on multiple OSI layers. > > MLS refers to a route/switch architecture in which the forwarding and > routing jobs (layers or modules) are assigned to two different pieces of > hardware. A router module learns how to reach destinations, handles the > first set of packets to a destination, and then tells a switching module how > to handle subsequent packets for that flow. Some high-end routers do this > (with VIPs, etc.) and some high-end switches can do it also, either with the > help of an outside router or by using built-in feature cards. > > MLS is often used to specifically refer to the architecture and features on > a Cat 5000 and 6000 that enable this division of tasks. There are three > components (or layers) to the MLS architecture on these switches: > > MLS Route Processor (MLS-RP) > MLS Switching Engine (MLS-SE) > Multilayer Switching Protocol (MLSP) > > The router part talks to the switching part using MLSP. This allows the > switching part to develop a cache that enables "shortcut switching" of > packets. > > That's just one way of handling the necessary tasks, however. > > Take the 8500 "switch" as an example of another way of handling the problem. > It can run the entire IOS and act just like a traditional router, only > faster. It has a Switch Route Processor that handles routing functions at > high speeds. Just to confuse matters, it behaves a little differently from > the Route Switch Processor available on other platforms. :-) > > Unfortunately, I don't know much about the Catalyst 4000, which was > mentioned in the original question. But from what I understand about it, > it's basically a router with switch ports. Its architecture is more like the > 8500. It runs most of IOS and can do routing protocols, including BGP, OSPF, > etc. It can forward packets at high speeds based on Layer 3 info or Layer 2 > info. It's a router on steroids, whereas a Cat 5000 or 6000 with MLS is a > switch that has been told how to forward packets that normally a router > would handle. > > Which method is better? Neither one, though they have their pluses and > minues. Really, you just have to realize that all these options came out > during the dot com craze when Cisco had thousands and thousands of employees > all working to solve the same problem, gobs of money to buy companies with > products that all sovled the same problem, etc. So in true Cisco style, you > can accomplish the exact same thing (fast forwarding of packets) in a bunch > of different ways. > > ___ > > Priscilla Oppenheimer > www.troubleshootingnetworks.com > www.priscilla.com > > > > > > > > ""Kirankumar Patel"" wrote in message > > news:[EMAIL PROTECTED] > > > Dear > > > > > > L3 switching is nothing but switch acting as a router. > > > > > > MLS -- Multiprotocol Label Switch -- Can enables routers to > > make > > forwarding > > > decisions based on short labels, thereby avoiding the complex > > > packet-by-packet look-ups used in conventional routing. > > > > > > With MLS, can run faster then ATM switch. > > > > > > Regards, > > > > > > Kiran > > > > > > > > > >From: "Neil Arlante" > > > >Reply-To: "Neil Arlante" > > > >To: [EMAIL PROTECTED] > > > >Subject: Difference on L3 switching of Cat4500 and Cat6500? > > [7:65802] > > > >Date: Thu, 20 Mar 2003 02:56:26 GMT > > > > > > > >Hi group, > > > > > > > >What is the difference between L3 switching capabilities of > > 4500 and > > 6500? > > > >Catalyst 4500 docs mentioned it support L3 switching, but > > not MLS. What > > is > > > >the > > > >main difference between L3 switching of 4500 and MLS of 6500? > > > > > > > >TIA > > > > > _ > > > Cricket World Cup 2003 > > http://server1.msn.co.in/msnspecials/worldcup03/ > > > News, Views and Match Reports. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65980&t=65832 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 switching [7:65916]
KW S wrote: > > Dear all > > I have a little confusion here > > Layer 3 switching is hardware based routing. > > If this is correct, does it means that switching path in a > router like netflow I think netflow on a router is software based, isn't it? But it's certainly helping in the job of switching packets using Layer 3 information. It's doing Layer 3 switching, whether it's hardware-baed or not. > and distributed switching is the same as L3 > switching Distributed switching could certainly be called L3 switching. I don't think Cisco uses that term, but it's technically accurate and goes along with your definition that Layer 3 switching is hardware-based routing of packets (forwarding of packets). If you look at older books and documents, before LAN switches existed, and we just had bridges and routers, Cisco router documentation used to say this: A router has two jobs: path determination switching of packets That confused people when LAN swtiches came out, so they started saying A router has two jobs: path determination forwarding of packets A router works at Layer 3. That switching (or forwarding or routing) of packets always was "Layer 3 switcing," even though nobody called it that. We were doing "Layer 3 switching" long before marketing started using the term to specifically mean "hardward-based routing," and before the new-fangled switches that are really routers with a lot of switch ports built in came out. It's just a matter of packaging. That's something marketing people deal with. We are engineers. We use the term switching in the same way engineers have used it for many years when talking about switching telegraph signals, telephone calls, current through an electrical circuit, trains on a train track, and packets through an internetworking device. Don't forget that. WE ARE ENGINEERS. :-) We do the real work. Marketing makes up names for what we do, packages what we do, and gives advice to the other people who do the real work, the SALES people. They can make up any names they want. The names don't really have much to do with operating and troubleshooting networks. Priscilla > > Thanks > > KWS > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65955&t=65916 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
L3 switching [7:65916]
Dear all I have a little confusion here Layer 3 switching is hardware based routing. If this is correct, does it means that switching path in a router like netflow and distributed switching is the same as L3 switching Thanks KWS Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65916&t=65916 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6 [7:65832]
At 6:04 PM + 3/20/03, Priscilla Oppenheimer wrote: >Robert Edmonds wrote: >> >> Actually, Multiprotocol Label Switch is MPLS. MLS is >> MultiLayer Switching. >> This refers to a switch that can do not noly what Kiran said >> about L3 >> switching, but can make forwarding decisions based on higher >> level >> protocols, such as tcp, udp, etc. > >Oh dear, this has really gotten funny. > >MLS is neither MPLS nor switching based on multiple OSI layers. Multiple Listing System, a Real Estate application. > >MLS refers to a route/switch architecture in which the forwarding and >routing jobs (layers or modules) are assigned to two different pieces of >hardware. A router module learns how to reach destinations, handles the >first set of packets to a destination, and then tells a switching module how >to handle subsequent packets for that flow. Some high-end routers do this >(with VIPs, etc.) and some high-end switches can do it also, either with the >help of an outside router or by using built-in feature cards. > >MLS is often used to specifically refer to the architecture and features on >a Cat 5000 and 6000 that enable this division of tasks. There are three >components (or layers) to the MLS architecture on these switches: > >MLS Route Processor (MLS-RP) >MLS Switching Engine (MLS-SE) >Multilayer Switching Protocol (MLSP) > >The router part talks to the switching part using MLSP. This allows the >switching part to develop a cache that enables "shortcut switching" of >packets. See the ongoing drafts in the IETF FORCES Working Group for some general models of this approach. Without getting into vendor-specific areas, however, the most advanced routers in development use higher levels of multiprocessing and multiple processor interactions. > >That's just one way of handling the necessary tasks, however. > >Take the 8500 "switch" as an example of another way of handling the problem. >It can run the entire IOS and act just like a traditional router, only >faster. It has a Switch Route Processor that handles routing functions at >high speeds. Just to confuse matters, it behaves a little differently from >the Route Switch Processor available on other platforms. :-) > >Unfortunately, I don't know much about the Catalyst 4000, which was >mentioned in the original question. But from what I understand about it, >it's basically a router with switch ports. Its architecture is more like the >8500. It runs most of IOS and can do routing protocols, including BGP, OSPF, >etc. It can forward packets at high speeds based on Layer 3 info or Layer 2 >info. It's a router on steroids, whereas a Cat 5000 or 6000 with MLS is a >switch that has been told how to forward packets that normally a router >would handle. > >Which method is better? Neither one, though they have their pluses and >minues. A true point. When I have designed complex networks, on a case-by-case basis, I might find that one or another method was best for the specific circumstances. I am not convinced that another method wouldn't have been "good enough." >Really, you just have to realize that all these options came out >during the dot com craze when Cisco had thousands and thousands of employees >all working to solve the same problem, gobs of money to buy companies with >products that all sovled the same problem, etc. So in true Cisco style, you >can accomplish the exact same thing (fast forwarding of packets) in a bunch >of different ways. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65910&t=65832 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Token Ring and CCNP Switching Exam 640-604 [7:65885]
Is token ring a part of the CCNP Switching Exam 640-604? It is not listed in the exam objectives. Thanks, Tim Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65885&t=65885 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6 [7:65832]
Robert Edmonds wrote: > > Actually, Multiprotocol Label Switch is MPLS. MLS is > MultiLayer Switching. > This refers to a switch that can do not noly what Kiran said > about L3 > switching, but can make forwarding decisions based on higher > level > protocols, such as tcp, udp, etc. Oh dear, this has really gotten funny. MLS is neither MPLS nor switching based on multiple OSI layers. MLS refers to a route/switch architecture in which the forwarding and routing jobs (layers or modules) are assigned to two different pieces of hardware. A router module learns how to reach destinations, handles the first set of packets to a destination, and then tells a switching module how to handle subsequent packets for that flow. Some high-end routers do this (with VIPs, etc.) and some high-end switches can do it also, either with the help of an outside router or by using built-in feature cards. MLS is often used to specifically refer to the architecture and features on a Cat 5000 and 6000 that enable this division of tasks. There are three components (or layers) to the MLS architecture on these switches: MLS Route Processor (MLS-RP) MLS Switching Engine (MLS-SE) Multilayer Switching Protocol (MLSP) The router part talks to the switching part using MLSP. This allows the switching part to develop a cache that enables "shortcut switching" of packets. That's just one way of handling the necessary tasks, however. Take the 8500 "switch" as an example of another way of handling the problem. It can run the entire IOS and act just like a traditional router, only faster. It has a Switch Route Processor that handles routing functions at high speeds. Just to confuse matters, it behaves a little differently from the Route Switch Processor available on other platforms. :-) Unfortunately, I don't know much about the Catalyst 4000, which was mentioned in the original question. But from what I understand about it, it's basically a router with switch ports. Its architecture is more like the 8500. It runs most of IOS and can do routing protocols, including BGP, OSPF, etc. It can forward packets at high speeds based on Layer 3 info or Layer 2 info. It's a router on steroids, whereas a Cat 5000 or 6000 with MLS is a switch that has been told how to forward packets that normally a router would handle. Which method is better? Neither one, though they have their pluses and minues. Really, you just have to realize that all these options came out during the dot com craze when Cisco had thousands and thousands of employees all working to solve the same problem, gobs of money to buy companies with products that all sovled the same problem, etc. So in true Cisco style, you can accomplish the exact same thing (fast forwarding of packets) in a bunch of different ways. ___ Priscilla Oppenheimer www.troubleshootingnetworks.com www.priscilla.com > > > ""Kirankumar Patel"" wrote in message > news:[EMAIL PROTECTED] > > Dear > > > > L3 switching is nothing but switch acting as a router. > > > > MLS -- Multiprotocol Label Switch -- Can enables routers to > make > forwarding > > decisions based on short labels, thereby avoiding the complex > > packet-by-packet look-ups used in conventional routing. > > > > With MLS, can run faster then ATM switch. > > > > Regards, > > > > Kiran > > > > > > >From: "Neil Arlante" > > >Reply-To: "Neil Arlante" > > >To: [EMAIL PROTECTED] > > >Subject: Difference on L3 switching of Cat4500 and Cat6500? > [7:65802] > > >Date: Thu, 20 Mar 2003 02:56:26 GMT > > > > > >Hi group, > > > > > >What is the difference between L3 switching capabilities of > 4500 and > 6500? > > >Catalyst 4500 docs mentioned it support L3 switching, but > not MLS. What > is > > >the > > >main difference between L3 switching of 4500 and MLS of 6500? > > > > > >TIA > > > _ > > Cricket World Cup 2003 > http://server1.msn.co.in/msnspecials/worldcup03/ > > News, Views and Match Reports. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65858&t=65832 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65839]
MLS is multilayer switching, which is available only on Cat5000 and Cat6000 family of switches, by using MSFC on Cat6000. What is the difference on L3 switching performed by Cat4000 series. MLS doesn't use labels, it use cache of candidate and enable packets, and Xtags of MLS-RP. How about L3 switching on Cat4000? Thanks, Kiran, but I don't think you answered correctly. - Original Message - From: "Kirankumar Patel" To: Sent: Thursday, March 20, 2003 6:33 PM Subject: Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65818] > Dear > > L3 switching is nothing but switch acting as a router. > > MLS -- Multiprotocol Label Switch -- Can enables routers to make forwarding > decisions based on short labels, thereby avoiding the complex > packet-by-packet look-ups used in conventional routing. > > With MLS, can run faster then ATM switch. > > Regards, > > Kiran > > > >From: "Neil Arlante" > >Reply-To: "Neil Arlante" > >To: [EMAIL PROTECTED] > >Subject: Difference on L3 switching of Cat4500 and Cat6500? [7:65802] > >Date: Thu, 20 Mar 2003 02:56:26 GMT > > > >Hi group, > > > >What is the difference between L3 switching capabilities of 4500 and 6500? > >Catalyst 4500 docs mentioned it support L3 switching, but not MLS. What is > >the > >main difference between L3 switching of 4500 and MLS of 6500? > > > >TIA > _ > Cricket World Cup 2003 http://server1.msn.co.in/msnspecials/worldcup03/ > News, Views and Match Reports. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65839&t=65839 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65832]
Actually, Multiprotocol Label Switch is MPLS. MLS is MultiLayer Switching. This refers to a switch that can do not noly what Kiran said about L3 switching, but can make forwarding decisions based on higher level protocols, such as tcp, udp, etc. ""Kirankumar Patel"" wrote in message news:[EMAIL PROTECTED] > Dear > > L3 switching is nothing but switch acting as a router. > > MLS -- Multiprotocol Label Switch -- Can enables routers to make forwarding > decisions based on short labels, thereby avoiding the complex > packet-by-packet look-ups used in conventional routing. > > With MLS, can run faster then ATM switch. > > Regards, > > Kiran > > > >From: "Neil Arlante" > >Reply-To: "Neil Arlante" > >To: [EMAIL PROTECTED] > >Subject: Difference on L3 switching of Cat4500 and Cat6500? [7:65802] > >Date: Thu, 20 Mar 2003 02:56:26 GMT > > > >Hi group, > > > >What is the difference between L3 switching capabilities of 4500 and 6500? > >Catalyst 4500 docs mentioned it support L3 switching, but not MLS. What is > >the > >main difference between L3 switching of 4500 and MLS of 6500? > > > >TIA > _ > Cricket World Cup 2003 http://server1.msn.co.in/msnspecials/worldcup03/ > News, Views and Match Reports. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65832&t=65832 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65818]
Dear L3 switching is nothing but switch acting as a router. MLS -- Multiprotocol Label Switch -- Can enables routers to make forwarding decisions based on short labels, thereby avoiding the complex packet-by-packet look-ups used in conventional routing. With MLS, can run faster then ATM switch. Regards, Kiran >From: "Neil Arlante" >Reply-To: "Neil Arlante" >To: [EMAIL PROTECTED] >Subject: Difference on L3 switching of Cat4500 and Cat6500? [7:65802] >Date: Thu, 20 Mar 2003 02:56:26 GMT > >Hi group, > >What is the difference between L3 switching capabilities of 4500 and 6500? >Catalyst 4500 docs mentioned it support L3 switching, but not MLS. What is >the >main difference between L3 switching of 4500 and MLS of 6500? > >TIA _ Cricket World Cup 2003 http://server1.msn.co.in/msnspecials/worldcup03/ News, Views and Match Reports. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65818&t=65818 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Difference on L3 switching of Cat4500 and Cat6500? [7:65802]
Hi group, What is the difference between L3 switching capabilities of 4500 and 6500? Catalyst 4500 docs mentioned it support L3 switching, but not MLS. What is the main difference between L3 switching of 4500 and MLS of 6500? TIA Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65802&t=65802 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Conent Switching on LD416's [7:63846]
I'll answer my own question then ... just got word back from Cisco TAC, and there is no way the 416's can do any intelligent health checks, other than the http and dns probe. Dunno what to do with the 6 LD's that i have spare now! Already have the nes CSS chasis for our web farm ... mmm perhaps its time to do some LD416 tossing! :) Troy Leliard wrote: > > Hi there all, > > I've got a couple of Local Director's, and am trying to find a > way of doing intelligent "layer7) health checks of real > servers. eg for ftp, the LD will probe port 21 on eht real > server...if this port is not in a listening stated the LD will > remove the real server from the binding to the VIP (Virtual > IP)? There are built in mechanisms to do this probe for HTTP > and DNS, but as yet have not found a way to do it for > non-standard services / ports ? > > I know you can do this on the CSS's, but not sure about the > 4216's. I have an open TAC case about this so we'll have a > race and see who gets back first :) > CHeers > Troy > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63995&t=63846 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
At 9:11 AM + 2/27/03, Steve Wilson wrote: >Thanks for the definition assistance. >The problem with trying to assist in a forum such as this is that if you try >to simplify an answer you end up with an answer that is too simple. All I >was trying to get across was my way of looking at the difference between a >physically separate routing device working at layer3 between subnets and a >chassis like a 6509 which can have individual blades perform the functions >without the limitation of wires between the physical interfaces. The "wires" >are still there, they are just created in software in the chassis. > >Cheers, >Steve Wilson >Network Engineer Definite cheers in return. As you point out, it's easy to oversimplify--one of the reasons I avoid the L3 switching terminology. It's routing--there are just a wide range of router product design techniques, with different optimizations. Some of these optimizations are for maximum forwarding speed, others are for cost, others for QoS power, etc. To me, a virtual router implies there are at least two distinct control-and-forwarding entities (1 RIB and 1 FIB minimum each). I think this started with a fairly simple CCNA/CCNP level question--I've lost track at this point. My strong opinion is that for the purpose of initial understanding, trying to deal with L3 switching as a significantly different technique is totally confusing for people learning the basics. For them, L3 switching = routing, and then certain speeds, feeds, and feature sets. Choosing those speeds/feeds/feature sets is really a higher skill set for specific network design. The 6500 architecture (as is, for that matter, the 7500, 1, 12000...) involves a single active control instance and one or more physical forwarding instances in the same chassis, which is slightly different than either of my VR definitions. MLS gets even more confusing when one realizes that on a 5500, the control engine running the routing protocols can be on a completely external box, but the FIB is in a L3 forwarding board in the chassis with multiple L2 blades. 7500s and up actually can have multiple physical L3 forwarding instances. Without even getting into the researchy area of active multiprocessing in the control plane, things are very blurred on how to consider the 6509 by your definition above. I tend to think about it as a set of blades interconnected by a network, which just happens to be in the fabric. In other words, there isn't a huge difference between wires between physical interfaces and fabric, as long as the "wires" are fast enough. There are off-the-shelf optoelectronic fabric chipsets that run at OC-48 and OC-192, but aren't limited to 10 Gbps because they aren't limited to parallel interfacing. In other words, we get very blurred about whether the "box" is still more or less monolithic, or really should be considered an enclosure for a small Storage Area Network interconnecting the blades. I rather prefer the latter. Howard > >-Original Message- >From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED] >Sent: 26 February 2003 18:27 >To: [EMAIL PROTECTED] >Subject: RE: L3 Switching Huh [7:63728] > >At 3:18 PM + 2/26/03, Steve Wilson wrote: >>Charles, >>The 6509 switch needs some configuration in the background to create a >>"virtual router". > > >A bit of a heads-up on this term. It's conceptually useful, but be >aware that "virtual router" was considered to be an alternate VPN >model to RFC 2547, generally promoted by Nortel and Lucent. > >There have been LOTS of IETF arguments about the term. I didn't make >myself popular at one meeting by mentioning "we sure can't define >virtual router, but it's nice we have a virtual router redundancy >protocol (VRRP is the standards track equivalent to HSRP)." > >I was severely corrected that I needed to distinguish between >"virtual router" and "virtual router," depending on whether the >emphasis was on "virtual" or "router." In HSRP/VRRP, the virtual >router refers to a single conceptual router seen by hosts, but is >actually implemented across multiple platforms. > >The VPN people thought of virtual routers as multiple independent >routing (control and forwarding) logical instances on the same >platform. VRF is not quite the same concept, as it assumes more >shared knowledge between routing instances than does a VR VPN. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63966&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
Thanks for the definition assistance. The problem with trying to assist in a forum such as this is that if you try to simplify an answer you end up with an answer that is too simple. All I was trying to get across was my way of looking at the difference between a physically separate routing device working at layer3 between subnets and a chassis like a 6509 which can have individual blades perform the functions without the limitation of wires between the physical interfaces. The "wires" are still there, they are just created in software in the chassis. Cheers, Steve Wilson Network Engineer -Original Message- From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED] Sent: 26 February 2003 18:27 To: [EMAIL PROTECTED] Subject: RE: L3 Switching Huh [7:63728] At 3:18 PM + 2/26/03, Steve Wilson wrote: >Charles, >The 6509 switch needs some configuration in the background to create a >"virtual router". A bit of a heads-up on this term. It's conceptually useful, but be aware that "virtual router" was considered to be an alternate VPN model to RFC 2547, generally promoted by Nortel and Lucent. There have been LOTS of IETF arguments about the term. I didn't make myself popular at one meeting by mentioning "we sure can't define virtual router, but it's nice we have a virtual router redundancy protocol (VRRP is the standards track equivalent to HSRP)." I was severely corrected that I needed to distinguish between "virtual router" and "virtual router," depending on whether the emphasis was on "virtual" or "router." In HSRP/VRRP, the virtual router refers to a single conceptual router seen by hosts, but is actually implemented across multiple platforms. The VPN people thought of virtual routers as multiple independent routing (control and forwarding) logical instances on the same platform. VRF is not quite the same concept, as it assumes more shared knowledge between routing instances than does a VR VPN. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63954&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
A >And that's exactly what would happen if you did the inter-VLAN routing on a >router too, using subinterfaces for each VLAN/ IP subnet. :-) > >And, if it were a high-end router, it could do this at wire speed and would >have a RIB and FIB, just like someone else described for the 6500. The 7500 >router has had that sort of architecture for years, if I'm not mistaken. >Howard has given us lots of examples of other high-end routers that have >this sort of architecture. Of course, these high-end routers are probably >way more expensive than the so-called L3 switch and probably have all sorts >of features that you might not need in a campus network. Last I check, extreme make some pretty cheap bridges with integrated routing :) Naturally, to get a bunch of packet processing without mortgaging forwarding capacity, you'll end up spending more bucks. Howard's point about the relevance of wire speed routing in the enterprise is dead on though - most folks don't need it and wouldn't make use of it even if they had it. >So, we're back to the first answer. The difference between a router and a L3 >switch is marketing. Also economics. > >Sorry, I just had to play devil's advocate. What a shame that Cisco has >mangled this so much in their intro training materials. > >Priscilla > > > ... > > > > Does that help? > > > > Oh - and I think you meant to say "layer 3 switching" is a > > marketing term, > > not scientific or engineering in nature. ... you said "layer 3 > > routing" ... > > Thanks! > > TJ > > [EMAIL PROTECTED] > > > > > > -Original Message- > > From: DeVoe, Charles (PKI) [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, February 26, 2003 7:45 AM > > To: [EMAIL PROTECTED] > > Subject: RE: L3 Switching Huh [7:63728] > > > > OK, let me try this again. I am trying to figure out the > > difference between > > conventional layer 3 routing and layer 3 switching. A little > > background. I > > am currently working towards my CCNA (have been for about 3 > > years). At any > > rate, everything I read and look at says that > > switching/bridging is a layer > > 2 function, routing is a layer 3 function. > > > > Either I don't have a good grasp of the OSI model, switching, > > routing, VLANs > > or all of the above. > > > > The network: > > > > Host A 10.1.1.2 MAC 00.AA > > Host B > > 10.1.2.2 MAC 00.BB > > |10.1.1.1 MAC 01.AA 10.1.2.1 MAC > > 02.BB| > > switch > > A---Router-switch B > > 10.1.1.0/2410.1.2.0/24 > > > > This is an ethernet network. Both segments are connected by a > > traditional > > router say a 2500. > > In this instance the router interfaces are subnet A 10.1.1.1, > > and subnet B > > 10.1.2.1 > > > > For simplicity, assume ARP cache is empty. > > Host A wishes to ping Host B > > End user on Host A enters - ping 10.1.2.2 > > The IP packet places the source address 10.1.1.2 and the > > destination address > > 10.1.2.2 into the packet. > > The IP protocol examines the IP address and based on the IP > > address > > determines this is in another subnet. > > An ARP request goes out for 10.1.1.1 (default gateway) and the > > MAC address > > is found. > > The DLL then places the source MAC address 00.AA and the > > destination MAC > > 01.AA into the frame. > > The frame then goes out the wire to the destination MAC. > > The router interface sees this frame as destined for itself. It > > de-encapsulates the frame removing the MAC addresses. The > > router then > > examines the IP address, based on the routing table it knows > > the destination > > port. > > The router leaves the same IP source (10.1.1.2) and destination > > (10.1.2.2) > > in the packet. > > The frame is rebuilt with the new MAC address of source 02.BB > > and > > destination 00.BB > > Host B grabs this packet and does it's thing. > > > > Now, if I replace the router with a 6509 switch, with routing, > > how does the > > process change? > > Said 6509 would be equipped with a 10/100 card so that the > > hosts are now > > directly connected. The router interface is now a virtual > > interface, there > > is no physical interface. Which is another question. How does > > the 6509 > > determine this virtual address? > > > > Am I correct?
RE: L3 Switching Huh???? [7:63728]
Evans, TJ (BearingPoint) wrote: > > That all looks pretty good ... > > > On the MSFC/RSM - do a "show interface": (edited for length) > Vlan8 is up, line protocol is up > Hardware is Cat6k RP Virtual Ethernet, address is > 00d0.d335.6614 > > Vlan9 is up, line protocol is up > Hardware is Cat6k RP Virtual Ethernet, address is > 00d0.d335.6614 > So ... each 'router interface' has a MAC. The fact that it is > the same is > irrelevant as they are on different network/logical segments > on different broadcast domains>. > > So the frame comes in with a destination mac of 00d0.d335.6614, > and when > forwarded will leave with a source mac of 00d0.d335.6614 (same) And that's exactly what would happen if you did the inter-VLAN routing on a router too, using subinterfaces for each VLAN/ IP subnet. :-) And, if it were a high-end router, it could do this at wire speed and would have a RIB and FIB, just like someone else described for the 6500. The 7500 router has had that sort of architecture for years, if I'm not mistaken. Howard has given us lots of examples of other high-end routers that have this sort of architecture. Of course, these high-end routers are probably way more expensive than the so-called L3 switch and probably have all sorts of features that you might not need in a campus network. So, we're back to the first answer. The difference between a router and a L3 switch is marketing. Also economics. Sorry, I just had to play devil's advocate. What a shame that Cisco has mangled this so much in their intro training materials. Priscilla > ... > > Does that help? > > Oh - and I think you meant to say "layer 3 switching" is a > marketing term, > not scientific or engineering in nature. ... you said "layer 3 > routing" ... > Thanks! > TJ > [EMAIL PROTECTED] > > > -Original Message- > From: DeVoe, Charles (PKI) [mailto:[EMAIL PROTECTED] > Sent: Wednesday, February 26, 2003 7:45 AM > To: [EMAIL PROTECTED] > Subject: RE: L3 Switching Huh [7:63728] > > OK, let me try this again. I am trying to figure out the > difference between > conventional layer 3 routing and layer 3 switching. A little > background. I > am currently working towards my CCNA (have been for about 3 > years). At any > rate, everything I read and look at says that > switching/bridging is a layer > 2 function, routing is a layer 3 function. > > Either I don't have a good grasp of the OSI model, switching, > routing, VLANs > or all of the above. > > The network: > > Host A 10.1.1.2 MAC 00.AA > Host B > 10.1.2.2 MAC 00.BB > |10.1.1.1 MAC 01.AA 10.1.2.1 MAC > 02.BB| > switch > A---Router-switch B > 10.1.1.0/2410.1.2.0/24 > > This is an ethernet network. Both segments are connected by a > traditional > router say a 2500. > In this instance the router interfaces are subnet A 10.1.1.1, > and subnet B > 10.1.2.1 > > For simplicity, assume ARP cache is empty. > Host A wishes to ping Host B > End user on Host A enters - ping 10.1.2.2 > The IP packet places the source address 10.1.1.2 and the > destination address > 10.1.2.2 into the packet. > The IP protocol examines the IP address and based on the IP > address > determines this is in another subnet. > An ARP request goes out for 10.1.1.1 (default gateway) and the > MAC address > is found. > The DLL then places the source MAC address 00.AA and the > destination MAC > 01.AA into the frame. > The frame then goes out the wire to the destination MAC. > The router interface sees this frame as destined for itself. It > de-encapsulates the frame removing the MAC addresses. The > router then > examines the IP address, based on the routing table it knows > the destination > port. > The router leaves the same IP source (10.1.1.2) and destination > (10.1.2.2) > in the packet. > The frame is rebuilt with the new MAC address of source 02.BB > and > destination 00.BB > Host B grabs this packet and does it's thing. > > Now, if I replace the router with a 6509 switch, with routing, > how does the > process change? > Said 6509 would be equipped with a 10/100 card so that the > hosts are now > directly connected. The router interface is now a virtual > interface, there > is no physical interface. Which is another question. How does > the 6509 > determine this virtual address? > > Am I correct? > Inter VLAN communication cannot occur without a router. > Switching is based on MAC ad
RE: L3 Switching Huh???? [7:63728]
DeVoe, Charles (PKI) wrote: > > OK, let me try this again. I am trying to figure out the > difference between > conventional layer 3 routing and layer 3 switching. A little > background. I > am currently working towards my CCNA (have been for about 3 > years). At any > rate, everything I read and look at says that > switching/bridging is a layer > 2 function, routing is a layer 3 function. > > Either I don't have a good grasp of the OSI model, switching, > routing, VLANs > or all of the above. It sounds like you got it. Don't worry about the terminology so much. You got the concepts and that's what's important. See a few more comments below. > > The network: > > Host A 10.1.1.2 MAC 00.AA > Host B > 10.1.2.2 MAC 00.BB > |10.1.1.1 MAC 01.AA 10.1.2.1 MAC > 02.BB| > switch > A---Router-switch B > 10.1.1.0/2410.1.2.0/24 > > This is an ethernet network. Both segments are connected by a > traditional > router say a 2500. > In this instance the router interfaces are subnet A 10.1.1.1, > and subnet B > 10.1.2.1 > > For simplicity, assume ARP cache is empty. > Host A wishes to ping Host B > End user on Host A enters - ping 10.1.2.2 > The IP packet places the source address 10.1.1.2 and the > destination address > 10.1.2.2 into the packet. > The IP protocol examines the IP address and based on the IP > address > determines this is in another subnet. > An ARP request goes out for 10.1.1.1 (default gateway) and the > MAC address > is found. > The DLL then places the source MAC address 00.AA and the > destination MAC > 01.AA into the frame. > The frame then goes out the wire to the destination MAC. > The router interface sees this frame as destined for itself. It > de-encapsulates the frame removing the MAC addresses. The > router then > examines the IP address, based on the routing table it knows > the destination > port. > The router leaves the same IP source (10.1.1.2) and destination > (10.1.2.2) > in the packet. > The frame is rebuilt with the new MAC address of source 02.BB > and > destination 00.BB > Host B grabs this packet and does it's thing. > > Now, if I replace the router with a 6509 switch, with routing, > how does the > process change? The process is logically the same. I'm not familiar enough with the architecture of the 6509 switch to provide the details, but it looks like others have, so that's good. The important thing is that you understand the traffic flow and what goes in the address fields in the packets. That's great. There are senior network admins that don't get that. Seriously. The CCIE written tests this sort of thing and every so often we get clueless questions about it from people who think they are going to jump right into CCIE as long as we force-feed them the fundamentals. You are doing the right thing by getting down the fundamentals while still studying for CCNA. > Said 6509 would be equipped with a 10/100 card so that the > hosts are now > directly connected. The router interface is now a virtual > interface, there > is no physical interface. Which is another question. How does > the 6509 > determine this virtual address? > > Am I correct? > Inter VLAN communication cannot occur without a router. Yes. > Switching is based on MAC address. > Routing is based on IP address. The word switching is used in a more generic way too and has been for hundreds of years. Switching means forwarding, relaying, routing. Please do not insist that it only happens at L2, despite what the stupid books say. As I have already said, it's not true that it's just a marketing term. It is a good engineering term that the marketing people stole. Train tracks have equipment that switches trains. Telephone equipment switches voice conversations. Electrical devices switch current. An internetworking device switches digital data. For years, Cisco tried to get people to see the same thing that Howard is still trying to get people to see, which is that there are two sets of tasks: one related to learning paths to destinations and one related to forwarding data. For years Cisco called this second path switching. I say this just in the hopes that you will see that even Cisco has used the term switching to mean forwarding, long before L2 switches existed or before marketing people made up the L3 switch term. Priscilla > > I believe the term "layer 3 routing" is a marketing term, not > scientific or > engineering in nature. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63915&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
At 3:18 PM + 2/26/03, Steve Wilson wrote: >Charles, >The 6509 switch needs some configuration in the background to create a >"virtual router". A bit of a heads-up on this term. It's conceptually useful, but be aware that "virtual router" was considered to be an alternate VPN model to RFC 2547, generally promoted by Nortel and Lucent. There have been LOTS of IETF arguments about the term. I didn't make myself popular at one meeting by mentioning "we sure can't define virtual router, but it's nice we have a virtual router redundancy protocol (VRRP is the standards track equivalent to HSRP)." I was severely corrected that I needed to distinguish between "virtual router" and "virtual router," depending on whether the emphasis was on "virtual" or "router." In HSRP/VRRP, the virtual router refers to a single conceptual router seen by hosts, but is actually implemented across multiple platforms. The VPN people thought of virtual routers as multiple independent routing (control and forwarding) logical instances on the same platform. VRF is not quite the same concept, as it assumes more shared knowledge between routing instances than does a VR VPN. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63891&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
At 12:45 PM + 2/26/03, DeVoe, Charles (PKI) wrote: >OK, let me try this again. I am trying to figure out the difference between >conventional layer 3 routing and layer 3 switching. A little background. I >am currently working towards my CCNA (have been for about 3 years). At any >rate, everything I read and look at says that switching/bridging is a layer >2 function, routing is a layer 3 function. > >Either I don't have a good grasp of the OSI model, switching, routing, VLANs >or all of the above. > No, it's not you. It's that Cisco marketing (in fairness, in response to competitive marketdroids then at Cabletron, Synoptics, etc.) doesn't care to apply a knowledge of this model and likes the industry flavor of "switch fast router slow." Relay destination lookup time simply is not a major problem in router design. At one point, it was, but as router implementers started using faster lookup approaches, the lookup time pales into insignificance compared to things like traffic shaping/policing, accounting, etc. Abraham Lincoln once said, "If you call a horse's tail a leg, how many legs does a horse have?" The audience mumbled "five," and he replied "No. Calling a tail a leg does not make it one." Calling a nonspecific family of routing implementation techniques "L3 switching" doesn't make them anything other than routing. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63882&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
Charles, The 6509 switch needs some configuration in the background to create a "virtual router". This "virtual router" has virtual interfaces that would mimic the default gateways IP addresses of the physical 2500 router and therefore pass traffic between the virtual interfaces. The two subnets that you list would be on different VLANs on the switch. It would look like the packets are only going from one interface on the switch to the other and back again, but in reality they are passing through the "virtual router" created on a route processing piece of software. This would be on a multi-layer switch module or similar. Layer 2 = MAC addresses, layer 3 = IP addresses. To get between IP subnets you need a routing function which is either provided by a physical router or a "virtual router" which routes between "virtual LANs" created by software. This is not the definitive answer but hopefully it clears away some of the mud. Cheers, Steve Wilson Network Engineer -Original Message- From: DeVoe, Charles (PKI) [mailto:[EMAIL PROTECTED] Sent: 26 February 2003 12:45 To: [EMAIL PROTECTED] Subject: RE: L3 Switching Huh [7:63728] OK, let me try this again. I am trying to figure out the difference between conventional layer 3 routing and layer 3 switching. A little background. I am currently working towards my CCNA (have been for about 3 years). At any rate, everything I read and look at says that switching/bridging is a layer 2 function, routing is a layer 3 function. Either I don't have a good grasp of the OSI model, switching, routing, VLANs or all of the above. The network: Host A 10.1.1.2 MAC 00.AA Host B 10.1.2.2 MAC 00.BB |10.1.1.1 MAC 01.AA 10.1.2.1 MAC 02.BB| switch A---Router-switch B 10.1.1.0/2410.1.2.0/24 This is an ethernet network. Both segments are connected by a traditional router say a 2500. In this instance the router interfaces are subnet A 10.1.1.1, and subnet B 10.1.2.1 For simplicity, assume ARP cache is empty. Host A wishes to ping Host B End user on Host A enters - ping 10.1.2.2 The IP packet places the source address 10.1.1.2 and the destination address 10.1.2.2 into the packet. The IP protocol examines the IP address and based on the IP address determines this is in another subnet. An ARP request goes out for 10.1.1.1 (default gateway) and the MAC address is found. The DLL then places the source MAC address 00.AA and the destination MAC 01.AA into the frame. The frame then goes out the wire to the destination MAC. The router interface sees this frame as destined for itself. It de-encapsulates the frame removing the MAC addresses. The router then examines the IP address, based on the routing table it knows the destination port. The router leaves the same IP source (10.1.1.2) and destination (10.1.2.2) in the packet. The frame is rebuilt with the new MAC address of source 02.BB and destination 00.BB Host B grabs this packet and does it's thing. Now, if I replace the router with a 6509 switch, with routing, how does the process change? Said 6509 would be equipped with a 10/100 card so that the hosts are now directly connected. The router interface is now a virtual interface, there is no physical interface. Which is another question. How does the 6509 determine this virtual address? Am I correct? Inter VLAN communication cannot occur without a router. Switching is based on MAC address. Routing is based on IP address. I believe the term "layer 3 routing" is a marketing term, not scientific or engineering in nature. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63871&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
That all looks pretty good ... On the MSFC/RSM - do a "show interface": (edited for length) Vlan8 is up, line protocol is up Hardware is Cat6k RP Virtual Ethernet, address is 00d0.d335.6614 Vlan9 is up, line protocol is up Hardware is Cat6k RP Virtual Ethernet, address is 00d0.d335.6614 So ... each 'router interface' has a MAC. The fact that it is the same is irrelevant as they are on different network/logical segments . So the frame comes in with a destination mac of 00d0.d335.6614, and when forwarded will leave with a source mac of 00d0.d335.6614 (same) ... Does that help? Oh - and I think you meant to say "layer 3 switching" is a marketing term, not scientific or engineering in nature. ... you said "layer 3 routing" ... Thanks! TJ [EMAIL PROTECTED] -Original Message- From: DeVoe, Charles (PKI) [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 26, 2003 7:45 AM To: [EMAIL PROTECTED] Subject: RE: L3 Switching Huh [7:63728] OK, let me try this again. I am trying to figure out the difference between conventional layer 3 routing and layer 3 switching. A little background. I am currently working towards my CCNA (have been for about 3 years). At any rate, everything I read and look at says that switching/bridging is a layer 2 function, routing is a layer 3 function. Either I don't have a good grasp of the OSI model, switching, routing, VLANs or all of the above. The network: Host A 10.1.1.2 MAC 00.AA Host B 10.1.2.2 MAC 00.BB |10.1.1.1 MAC 01.AA 10.1.2.1 MAC 02.BB| switch A---Router-switch B 10.1.1.0/2410.1.2.0/24 This is an ethernet network. Both segments are connected by a traditional router say a 2500. In this instance the router interfaces are subnet A 10.1.1.1, and subnet B 10.1.2.1 For simplicity, assume ARP cache is empty. Host A wishes to ping Host B End user on Host A enters - ping 10.1.2.2 The IP packet places the source address 10.1.1.2 and the destination address 10.1.2.2 into the packet. The IP protocol examines the IP address and based on the IP address determines this is in another subnet. An ARP request goes out for 10.1.1.1 (default gateway) and the MAC address is found. The DLL then places the source MAC address 00.AA and the destination MAC 01.AA into the frame. The frame then goes out the wire to the destination MAC. The router interface sees this frame as destined for itself. It de-encapsulates the frame removing the MAC addresses. The router then examines the IP address, based on the routing table it knows the destination port. The router leaves the same IP source (10.1.1.2) and destination (10.1.2.2) in the packet. The frame is rebuilt with the new MAC address of source 02.BB and destination 00.BB Host B grabs this packet and does it's thing. Now, if I replace the router with a 6509 switch, with routing, how does the process change? Said 6509 would be equipped with a 10/100 card so that the hosts are now directly connected. The router interface is now a virtual interface, there is no physical interface. Which is another question. How does the 6509 determine this virtual address? Am I correct? Inter VLAN communication cannot occur without a router. Switching is based on MAC address. Routing is based on IP address. I believe the term "layer 3 routing" is a marketing term, not scientific or engineering in nature. ** The information in this email is confidential and may be legally privileged. Access to this email by anyone other than the intended addressee is unauthorized. If you are not the intended recipient of this message, any review, disclosure, copying, distribution, retention, or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. If you are not the intended recipient, please reply to or forward a copy of this message to the sender and delete the message, any attachments, and any copies thereof from your system. ** Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63869&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
If you are using MSFC2/PFC2, the PFC2 (does layer 3 wirespeed 'forwarding' between Vlan) will have a FIB (forwarding information base), which is a copy of the RIB (routing information base). The RIB is built on the MSFC2 (router functions). Even the first packet between Vlan 1 and 2 will be wire speed because the FIB will have an entry saying what is the next hop and the layer 2 header it should use. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63861&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: L3 Switching Huh???? [7:63728]
OK, let me try this again. I am trying to figure out the difference between conventional layer 3 routing and layer 3 switching. A little background. I am currently working towards my CCNA (have been for about 3 years). At any rate, everything I read and look at says that switching/bridging is a layer 2 function, routing is a layer 3 function. Either I don't have a good grasp of the OSI model, switching, routing, VLANs or all of the above. The network: Host A 10.1.1.2 MAC 00.AA Host B 10.1.2.2 MAC 00.BB |10.1.1.1 MAC 01.AA 10.1.2.1 MAC 02.BB| switch A---Router-switch B 10.1.1.0/2410.1.2.0/24 This is an ethernet network. Both segments are connected by a traditional router say a 2500. In this instance the router interfaces are subnet A 10.1.1.1, and subnet B 10.1.2.1 For simplicity, assume ARP cache is empty. Host A wishes to ping Host B End user on Host A enters - ping 10.1.2.2 The IP packet places the source address 10.1.1.2 and the destination address 10.1.2.2 into the packet. The IP protocol examines the IP address and based on the IP address determines this is in another subnet. An ARP request goes out for 10.1.1.1 (default gateway) and the MAC address is found. The DLL then places the source MAC address 00.AA and the destination MAC 01.AA into the frame. The frame then goes out the wire to the destination MAC. The router interface sees this frame as destined for itself. It de-encapsulates the frame removing the MAC addresses. The router then examines the IP address, based on the routing table it knows the destination port. The router leaves the same IP source (10.1.1.2) and destination (10.1.2.2) in the packet. The frame is rebuilt with the new MAC address of source 02.BB and destination 00.BB Host B grabs this packet and does it's thing. Now, if I replace the router with a 6509 switch, with routing, how does the process change? Said 6509 would be equipped with a 10/100 card so that the hosts are now directly connected. The router interface is now a virtual interface, there is no physical interface. Which is another question. How does the 6509 determine this virtual address? Am I correct? Inter VLAN communication cannot occur without a router. Switching is based on MAC address. Routing is based on IP address. I believe the term "layer 3 routing" is a marketing term, not scientific or engineering in nature. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63857&t=63728 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
