OSPF inter-area learned routes [7:22268]
Okay, I've been beating my head over this one for a week, and finally give up: I'm trying to understand the logic behind OSPF's and Cisco's routing selection behavior in this instance: I have 6 routers, segmented into 3 areas - areas 0, 1, and 2. Routers A1 and A2, which sit in area 1, have fast ethernet interfaces on the same network (we'll call this network A), have formed adjacencies with eachother across this network, and seem to be exchanging routes properly. Routers B1 and B2 are in areas 0, 1, and 2. Again, each router has a fast ethernet interface on the same network (network B), which is in area 0. B1 has a T3 link to A1, and this numbered link is in area 1. B2 has a T1 link to A2, and this numbered link is in area 1. Routers C1 and C2 sit in area 2, and have fast ethernet interfaces on the same network (network C). B1 has a T1 link to C1, and B2 has a T3 link to C2. Pretty much everything else is default, including link metrics, summary metrics, etc. No summarization is taking place. Now, I'm confused, because if I do show ip route on router A1 or A2 for network C, the selected inter-area route for network C points across the T1 link to B2, as opposed to the lower-cost path across the T3 to B1 (then across the FE link to B2, and across the T3 link to C2)! If I do a show ip ospf database summary for network C, I do see that I've received summary routes for network C from both B1 and B2, and that B1 has a lower metric, but it seems that the A routers select the path across to B2 anyway. I assume that this has something to do with the fact that the core routers are both backbone routers AND ABRs for the other areas, and that LSAs for area 1 don't pass across the fast ethernet interface (instead, I expect to see summary-LSAs for the area 1 passing across area 0, then being re-summarized as available paths back to area 1), but I suspect that there's just something fundamental about OSPF that I don't understand. Can anybody explain to me why the better-metric path isn't being selected in this case? Thanks, Ian Schorr CCNP Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=22268t=22268 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Passed BCRAN
I'm confused. Is the test that everyone's talking about passing the "BCRAN" or the "Remote Access" exam? So far I've been reading them as one and the same, but since the BCRAN book from Cisco Press (which I own) is supposed to cover the same material as the BCRAN (class), not an Exam Guide (Cisco Press says their Remote Access exam guide will be out in December), I'm starting to wonder. I thought the BCRAN (class) was supposed to be good preparation for the Remote Access exam, but that there was no actual BCRAN test? -Ian "Jeffrey Eiber" wrote in message 8pbc1n$ois$[EMAIL PROTECTED]... I passed BCRAN today with an 846 (706 to pass). It wasn't nearly as difficult as I was expecting. I used the Cisco Press BCRAN book by Catherin Paquet. I read the book once, skimmed it a second time, then reviewed a few chapters. I wrote out lots and lots of config fragments for practice. That's it. Jeff **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] **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: PPP Callback
This also puts the long-distance costs, etc. on the "main site" that the user is calling into, if toll charges apply. Cuthbert Simalenga wrote in message 81B5D01781C2D311AF7B00902784479210D358@PHETOGO... It is simply a security feature for dial up accounts. The user dials into the system and the system authenticates him, drops the connection then calls the user back at a designated number. So if someone else tried to dial into the system from a different location, the system will accept the call, drop it then call the pre-configured number -this is where security comes in, Cuth -Original Message- From: Helena LOW [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 03, 2000 9:36 AM To: [EMAIL PROTECTED] Subject: PPP Callback Hi, I'm reading the BCRAN book at the moment and getting really confused about PPP Callback...can someone please explain it to me? Thanks Helena ___ 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] --- ___ 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: Passed ACRC
And it went well!! At the bell, I passed the ACRC. My score was 825 out of 790 - a little close for my comfort, but passing is passing, I suppose =) Not that it matters much anymore (since the exams are completely retired as of today), but I have to say that the first Boson ACRC pack was dead-on. I think it really helped me get the edge I needed. Also I really wanted to thank the group - people like Chuck, Priscilla, Howard, and many others who have given insight any way they can! -Ian "Ian Schorr" wrote in message 8lv87g$jgp$[EMAIL PROTECTED]... Amit, congratulations!! I take my test July 31st - 1st attempt. I have a thing for the dramatic =) -Ian "Amit Lilani" wrote in message 8ltdel$otm$[EMAIL PROTECTED]... Thanks to all you... guys on the list to answer all my queries and questions related to ACRC ... and lots of more... i passed my exam on the second attempt scoring 834 Not bad... got it done before July 31stCIT ..here i come... thanks amit ___ 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] --- ___ 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: Passed ACRC
Amit, congratulations!! I take my test July 31st - 1st attempt. I have a thing for the dramatic =) -Ian "Amit Lilani" wrote in message 8ltdel$otm$[EMAIL PROTECTED]... Thanks to all you... guys on the list to answer all my queries and questions related to ACRC ... and lots of more... i passed my exam on the second attempt scoring 834 Not bad... got it done before July 31stCIT ..here i come... thanks amit ___ 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]
Re: Taking ACRC Tomorrow
How did you do? I take mine the 31st (Yes, my first shot at the ACRC will be my last - they retire the exam that day!) -Ian ""Rah Sta"" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I'm going to take the ACRC exam tomorrow. I used Boson exams, ACRC Cisco Press, Acrc Sybase and exam notes. I believe I'm ready. Is there anything I need to know? Thank you. PEACE Raheem Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.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] --- ___ 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: CCNA 2.0 passing score?
Sounds more like the CCNA 1.0... "Chris Haller" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Actually Passing score is 755, 78 Questions and 90 minutes --- Hartmut Opfermann [EMAIL PROTECTED] wrote: Passing Score is 822 65 Questions 105 Minutes On Wed, 19 Jul 2000, Tricia Wang wrote: Hi, Can anyone who had taken the CCNA 2.0 test please tell me what the passing score(also time, # of Questions) is? I'm going to write the test in two days and would like to know that information. thanks in advance! Tricia. ___ 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] = Chris from Chicago MasterCNE, 5.x CNE, ICNE, 4.x CNE, CCNA, MCP __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.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] --- ___ 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: subnet vs. Vlan
[EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I beg to differ on this one. I'm currently dealing with a network that has 4 VLANs. Two of those VLANs use multiple subnets. the only thing you need to do to make another subnet work on a VLAN is a secondary IP on the router interface for that VLAN. Remember - VLANs are layer 2 (MAC address), not Layer 3 (IP address). The only entity that cares what subnet a node belongs to is the router. Well, that and the IP hosts themselves =) Walker Traylor To: [EMAIL PROTECTED] wtraylor@ciscc: co.com Subject: Re: subnet vs. Vlan Sent by: nobody@groups tudy.com 07/20/00 04:20 PM Please respond to Walker Traylor You must use a router between any networks, even if they are on the same VLAN. You do not need a router to merely connect VLANS if they are on the same network. However, you could just make them just one VLAN in that case. --Walker jeongwoo park wrote: HI all I have a question. Cisco recommends that there be one-to-one relationship between ip subnets and Vlans. When the number of devices on a Vlan exceeds the number of host ip addresses per configured subnet, more than one subnet can exit on a Vlan. Having said that, my question; There are two subnets in a Vlan. Do we need a router to interconnect these two subnets? I know that we need a router to interconnect two different Vlans. In addtion to that, can more than one vlan exist on a subnet? if so, do we still need a router to interconnect different vlans even if there are in a same subnet? thanks jeongwoo ___ 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: LAN design
And by default, most current Cisco routers already have Fast Switching or better enabled (unless extended IP access lists are applied, if I remember right). ""Tony Olzak"" [EMAIL PROTECTED] wrote in message 8lak03$u0r$[EMAIL PROTECTED]">news:8lak03$u0r$[EMAIL PROTECTED]... But the performance is still much faster than manually routing everything. After the first couple of packets, the switch doesn't need to go through the router to reach the other subnet. So, in fact, it is really like layer 3 switching. "Kent Hundley" [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] icrosoft.com... Ron, layer 3 switching = routing "layer 3 switching" is just a marketing term thought up by sales droids to confuse the masses. At most, layer 3 switching means "fast routing and fowarding". You have asics and software enhancements, but the basic foundation its still a layer 3 path determination and forwarding based on that information, i.e what we called routing in the old days. Hope that sheds some light. -Kent -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Ron Stark Sent: Friday, July 21, 2000 10:06 AM To: [EMAIL PROTECTED] Subject: LAN design Hi people, I have a design question that I was wondering if someone could shed some light on. With all the talk of layer3 switching these days, is it a good idea to switch at the core? Shouldn't the core be routed? Thanks - Ron ___ 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: [Re: CCNP 1.0 VS CCNP 2.0]
David who? (Did you reply to the correct thread?) "Flavio Palumbo" wrote in message 8g0pjm$sm9$[EMAIL PROTECTED]... Hi David , in the CIT test are there any questions about Catalyst and OSPF ? Do you remember any other arguments apart ISDN and Spanning tree ? thank you very much Ciao Flavio Kevin Welch ha scritto nel messaggio [EMAIL PROTECTED]... Yes, but remember you can always go back and the 2.0 exams you missed and get your 2.0, so you could easily take the acrc in june, then take the BSCN when its released. -- Kevin "Annlee Hines" [EMAIL PROTECTED] wrote: You will be 1.0 if you do any of the 1.0 track. A 2.0 is all 2.0 exams. Annlee subramanian nallasivam wrote in message [EMAIL PROTECTED]... Hi , I am planning to take ACRC this june. I have a small doubt. If I take ACRC this june and the rest of the other exam(CIT,CLSC,CMTD) after november will I get the certificate CCNP 2.0 or CCNP 1.0 Thanks in advance for the replies. -Subi, CCNA __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.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] --- ___ 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] --- ___ 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]
