RE: Layer 3 switching
Title: Layer 3 switching OK, maybe this is a question of semantics, maybe I'll get flamed, but here goes anyway. The 6000 series does Multilayer switching, which is quite different in its functionality than layer 3 switching. Multilayer switching must still have a layer 3 router available to making the initial routing decision for a flow. True layer 3 switching uses ASICS to perform the routing functionality. Steve Brokaw, MCSE CCNA CCNP -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Abruzzese, JohnSent: Wednesday, September 27, 2000 12:37 PMTo: Cisco Group Study (E-mail)Subject: FW: Layer 3 switching -Original Message-From: Abruzzese, John Sent: Wednesday, September 27, 2000 1:36 PMTo: Iohan ReyesSubject: RE: Layer 3 switching The Catalyst 6000 switch family will do layer 3 switching with the Multi-Layer Switching Card(MSFC) and the Policy Feature Card(PFC). You can do both Layer 2 3 switching in addition to access lists. -Original Message-From: Iohan Reyes [mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000 12:45 PMTo: Fowler, Joey; [EMAIL PROTECTED]Subject: RE: Layer 3 switching I believe the 6000 series can be outfitted with a module to make it a layer-3 switch... -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Fowler, JoeySent: Wednesday, September 27, 2000 11:19 AMTo: [EMAIL PROTECTED]Subject: Layer 3 switching I know there has been much discussion on this in the past, but I want to make sure that I understand it. Layer 3 switching is the equivalent of routing, but is usually referred to as Layer 3 switching because it's designed for high speed LAN traffic. Assuming the above is correct what are some examples of a regular routers vs. layer 3 switch? I'm guessing the 2500 series routers would be regular but what would be a good example of a layer 3 switch? Thanks, Joey Fowler Senior Network Engineer Foodtrader.com
RE: Upgrading to Cisco switches
I have heard similar things about the fiber connections must be Cisco to Cisco, but I don't have anything technical to back it up. HOWEVER, I do have first hand experience that there is a difference between the way Bay and Cisco implement spanning tree. One of my customers plugged in their brand new Cat5500 and brought down their entire backbone for over 40 hours. Due to non-disclosure I can't give you many specifics, I will tell you that once the damage was done, the only way to fix it was to shutdown the ENTIRE backbone. Since we had to do that, we just went ahead and did a forklift upgrade of all the Bay stuff with Cisco stuff. If it's possible you might want to do some experimenting in a non-production environment before you start plugging stuff in. TAC says that what caused our situation was a 1 in a million chance. Steve Brokaw, MCSE CCNA CCNP -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jorge Rodriguez Sent: Wednesday, September 27, 2000 12:21 PM To: NetEng; [EMAIL PROTECTED] Subject: RE: Upgrading to Cisco switches I am not an expert on mixed switching devices, but I would say in your scenario I would make sure that if you're seting up trunks then you will need to use 802.1q industry standar encap instead of isl which is more of cisco proprietary. Switches from different vendors must follow industry standard, hoping that this is not a theory. Jorge --Original Message-- From: "NetEng" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: September 25, 2000 6:25:31 PM GMT Subject: Upgrading to Cisco switches I am upgrading my network from Bay/Compaq/Misc. switches to Cisco switches. I heard a rumor...in order to connect a Cisco switch (from a wiring closet) via fiber (GBIC) the core switch must also be a Cisco. In other words, a Cisco switch when connecting via fiber can only connect to another Cisco switch. I find this hard to believe, but I want to make sure before I go spouting off. Thanks in advance. Jorge Rodriguez /CCNA Network Analyst RS Networks Inc 1112 Boylston Street Suite 222 Boston, MA 02115 1-781-614-1294 1-617-989-8634 Evenings http://www.netwire.n3.net/ http://www.learncisco.n3.net/ iWon.com http://www.iwon.com why wouldn't you? **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Layer 3 switching
Title: Layer 3 switching OK, no argument from me. It's still Multi-layer switching, not layer 3 switching. Steve -Original Message-From: Abruzzese, John [mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000 1:56 PMTo: Steve and Monica BrokawCc: Cisco Group Study (E-mail)Subject: RE: Layer 3 switching In the 6000 family the MSFC acts as the MLS-RP, the equivalent of an RSM or Layer 3 router, and the Policy Feature Card(PFC) acts as the MLS-SE, which basically is the equivalent of the Net Flow Feature Card(NFFC) in the Cat 5000 family. -Original Message-From: Steve and Monica Brokaw [mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000 2:48 PMTo: Abruzzese, John; [EMAIL PROTECTED]Subject: RE: Layer 3 switching OK, maybe this is a question of semantics, maybe I'll get flamed, but here goes anyway. The 6000 series does Multilayer switching, which is quite different in its functionality than layer 3 switching. Multilayer switching must still have a layer 3 router available to making the initial routing decision for a flow. True layer 3 switching uses ASICS to perform the routing functionality. Steve Brokaw, MCSE CCNA CCNP -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Abruzzese, JohnSent: Wednesday, September 27, 2000 12:37 PMTo: Cisco Group Study (E-mail)Subject: FW: Layer 3 switching -Original Message-From: Abruzzese, John Sent: Wednesday, September 27, 2000 1:36 PMTo: Iohan ReyesSubject: RE: Layer 3 switching The Catalyst 6000 switch family will do layer 3 switching with the Multi-Layer Switching Card(MSFC) and the Policy Feature Card(PFC). You can do both Layer 2 3 switching in addition to access lists. -Original Message-From: Iohan Reyes [mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000 12:45 PMTo: Fowler, Joey; [EMAIL PROTECTED]Subject: RE: Layer 3 switching I believe the 6000 series can be outfitted with a module to make it a layer-3 switch... -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Fowler, JoeySent: Wednesday, September 27, 2000 11:19 AMTo: [EMAIL PROTECTED]Subject: Layer 3 switching I know there has been much discussion on this in the past, but I want to make sure that I understand it. Layer 3 switching is the equivalent of routing, but is usually referred to as Layer 3 switching because it's designed for high speed LAN traffic. Assuming the above is correct what are some examples of a regular routers vs. layer 3 switch? I'm guessing the 2500 series routers would be regular but what would be a good example of a layer 3 switch? Thanks, Joey Fowler Senior Network Engineer Foodtrader.com
RE: LAYER 3 SWITCHING
The answer is, every Cisco switch implements it differently. Try this link, it gives a basic explanation of each switch's method. http://www.cisco.com/warp/public/784/packet/july98/12.html Steve -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of FRS Sent: Wednesday, September 27, 2000 6:55 PM To: [EMAIL PROTECTED] Subject: LAYER 3 SWITCHING I need some help in understanding Layer 3 Switching. 1. What does the process Layer 3 switching refer to? 2. Is it packets or frames being switched out of interfaces or ports? 3. Using the 2948G-L3 as an example, how is the switching determined - by Routing table or CAM table? All help is appreciated. **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ACRC v. BSCN
ACRC + BGP - Access Lists -(most) IPX stuff = BSCN. They get more in depth on the routing protocols. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Montgomery, Robert WARCOM Contractor Sent: Monday, September 25, 2000 3:32 PM To: [EMAIL PROTECTED] Subject: ACRC v. BSCN For those who had the occasion to either take (or compare) the ACRC and BSCN exams, did you feel they were very, somewhat or not similar? I've been reviewing the ACRC guide to keep that info fresh, awaiting the BSCN guide, and wonder if this is a good idea or bad. I also wonder that, if one knows ACRC, will one have a good foundation for the BCSN (say a good 60% to 70% of the knowledge) or are they too dissimilar of a guide/course to carry each other? Any thoughts would be appreciated...even off line! Rob Montgomery CCNA MCP Information Security Engineer IA Systems Analyst Sytex, Inc./ Naval Special Warfare Command **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Study Materials for CCNP 2.0 Track?
Repeaters are digital devices that regenerate the DIGITAL signal for retransmission. AMPLIFIERS amplify analog signals. Steve Brokaw, MCSE CCNA CCNP Sprint Enterprise Network Services -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Ejay Hire Sent: Thursday, September 07, 2000 10:41 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Study Materials for CCNP 2.0 Track? Repeaters and Hubs are Physical Layer Devices. Repeaters amplify analog signals to reduce attenuation. Hubs provide multiple connection points for a single network segment. Hubs are sometimes called multi-port repeaters. Switches and Bridges are Layer 2 devices. They look at the Layer 2 address (MAC address), and make decisions about the destination of a packet based on the information contained therein. Original Message Follows From: "Andrew Larkins" [EMAIL PROTECTED] Reply-To: "Andrew Larkins" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Study Materials for CCNP 2.0 Track? Date: Thu, 7 Sep 2000 17:18:49 +0200 What si wrong with "layer 2 devices" - that is what they are?? ""Bradley J. Wilson"" [EMAIL PROTECTED] wrote in message 00d001c01854$635f8de0$[EMAIL PROTECTED]">news:00d001c01854$635f8de0$[EMAIL PROTECTED]... Hi guys - I'm studying for the CCNP myself, and I bought all four McGraw Hill Technical Expert books (all supervised by Tom Thomas, author of the Cisco OSPF book) - and they stink. I'd wait for the Cisco or even the Syngress books if I were you. Case in point: in the BCMSN book, repeaters and hubs are referred to throughout as "Layer 2 devices." 'Nuff said. Sincerely, Bradley J. Wilson CCNA, CCDA, MCSE, CCSE, CNX-A, NNCSS, MCT, CTT - Original Message - From: Seth Wilson To: [EMAIL PROTECTED] Sent: Wednesday, September 06, 2000 6:25 PM Subject: Re: Study Materials for CCNP 2.0 Track? Hi Tracy, I'm just starting to study for my CCNP as well. I believe--someone correct me if I'm wrong on this--that all the books for the CCNP 2.0 are available save for the BSCN (Building Scalable Cisco Networks) which corresponds to the Routing 2.0 exam. I'm presently studying for the Switching 2.0 exam, and the BCMSN (Building Cisco Multilayer Switched Networks) Cisco Press book is available for that for certain. I believe the BCRAN and CIT books are also available though. Best of luck. ~Seth~ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associate-Announcement.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Study Materials for CCNP 2.0 Track?
Well, please so me something other than your opinion to back that up, because here's what I read: "repeater -- a physical layer device that forwards bits, in contrast to bridges and routers, which forward packets." Interconnections, Second Edition Radia Perlman Page 530 "Repeaters fall into two categories: amplifiers and signal-regenerating repeaters. Amplifiers simply amplify the entire incoming signal. Unfortunately, they amplify both the signal and the noise. Signal-regenerating repeaters create an exact duplicate of incoming data by identifying it amidst the noise, reconstructing it, and retransmitting only the desired information. This reduces the noise. The original signal is duplicated, boosted to its original strength, and sent." MCSE: Networking Essentials Study Guide Chellis, Perkins, Strebe Page 393-394. "Repeater -- A physical layer device that only regenerates a bit stream. No intelligence is associated with a repeater" ACRC Exam Cram Morgan, Shroyer pg 410. "repeater Device that regenerates and propagates electrical signals between two network segments. See also segment. " Cut and Paste from CCO http://www.cisco.com/warp/public/10/wwtraining/demos/ccna-demo/glossary/r.ht m Now I suppose we could argue that "bit" doesn't mean digital, but then we'd have to argue exactly what is digital and is anything digital and then we'd have to get into Manchester encoding etc, etc. However, if you plan to get it right on any test you take, you ought to use these definitions, I did. Steve Brokaw -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of andy lennon Sent: Thursday, September 07, 2000 4:43 PM To: [EMAIL PROTECTED] Subject: Re: Study Materials for CCNP 2.0 Track? You are wrong there, Think about this: How can you regenerate a digital signal? By definition a digital signal is made up of discrete values. If some of these are lost, which is why you would want to regenerate the signal, how could you do this? The last person was right with their definition, after all, if you are talking about computers then you are talking about electron flows and these are by nature analogue (ignoring quantum theory which is still a complete mess. etc etc). Andy Lennon ccnp/dp/msce ""Steve and Monica Brokaw"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Repeaters are digital devices that regenerate the DIGITAL signal for retransmission. AMPLIFIERS amplify analog signals. Steve Brokaw, MCSE CCNA CCNP Sprint Enterprise Network Services -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Ejay Hire Sent: Thursday, September 07, 2000 10:41 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Study Materials for CCNP 2.0 Track? Repeaters and Hubs are Physical Layer Devices. Repeaters amplify analog signals to reduce attenuation. Hubs provide multiple connection points for a single network segment. Hubs are sometimes called multi-port repeaters. Switches and Bridges are Layer 2 devices. They look at the Layer 2 address (MAC address), and make decisions about the destination of a packet based on the information contained therein. Original Message Follows From: "Andrew Larkins" [EMAIL PROTECTED] Reply-To: "Andrew Larkins" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Study Materials for CCNP 2.0 Track? Date: Thu, 7 Sep 2000 17:18:49 +0200 What si wrong with "layer 2 devices" - that is what they are?? ""Bradley J. Wilson"" [EMAIL PROTECTED] wrote in message 00d001c01854$635f8de0$[EMAIL PROTECTED]">news:00d001c01854$635f8de0$[EMAIL PROTECTED]... Hi guys - I'm studying for the CCNP myself, and I bought all four McGraw Hill Technical Expert books (all supervised by Tom Thomas, author of the Cisco OSPF book) - and they stink. I'd wait for the Cisco or even the Syngress books if I were you. Case in point: in the BCMSN book, repeaters and hubs are referred to throughout as "Layer 2 devices." 'Nuff said. Sincerely, Bradley J. Wilson CCNA, CCDA, MCSE, CCSE, CNX-A, NNCSS, MCT, CTT - Original Message - From: Seth Wilson To: [EMAIL PROTECTED] Sent: Wednesday, September 06, 2000 6:25 PM Subject: Re: Study Materials for CCNP 2.0 Track? Hi Tracy, I'm just starting to study for my CCNP as well. I believe--someone correct me if I'm wrong on this--that all the books for the CCNP 2.0 are available save for the BSCN (Building Scalable Cisco Networks) which corresponds to the Routing 2.0 exam. I'm presently studying for the Switching 2.0 exam, and the BCMSN (Building Cisco Multilayer Switched Networks) Cisco Press book is available for that for certain. I believe the BCRAN and
RE: Passing Score of Support 2.0
Just passed it Friday morning, passing score is 692 on a scale of 300 - 1000. Oh yeah, how well do you know ISDN .. probably not well enough! Steve -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of wind Sent: Sunday, August 06, 2000 1:03 PM To: [EMAIL PROTECTED] Subject: Passing Score of Support 2.0 Hi; Anyone who know the passing score and no. of questions of support 2.0, let me know. Thanks Wind ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Routing 2.0
Has anyone seen any books that specifically address Routing 2.0? The exam cram is not yet published and Cisco press is always a little slow. Steve Brokaw, MCSE CCNA Sprint ENS ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Cisco virtual lab
Has anybody checked out the Cisco Interactive Mentor? www.cisco.com/go/cim It is a site with 4 or 5 virtual labs and they claim the expert lab is a simulation of day 1 for the CCIE lab. It's pretty cheap at $150-$200 for 90 days of lab access. So cheap it makes me wonder .. Steve Brokaw, MCSE CCNA Sprint ENS ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
