From: Keith Bizzell (mkbcoolman@gmail.com)
Date: Tue Apr 10 2007 - 23:10:50 ART
That's only there to show the discrepancy between the route table and what I
expect to see. Look at the database. This subnet is advertised by R1 and
R2. The question is why doesn't R5 apply the distance of 109 to all subnets
listed in the PrefR1 access-list?
On 4/10/07, Eugene Ward <eward15@juno.com> wrote:
>
> Look who is advertising the route:
> * 139.1.25.2, from 150.1.2.2, 00:07:19 ago, via Serial0/0/0.502
>
>
> ---------- Forwarded Message ----------
> Hey everyone! Has anyone attempted this one? R5/R1/R2 are in OSPF area
> 1.
> The solution says for R5 to prefer routes to specified subnets via
> R1. You
> cannot use ip ospf cost, bandwidth, virtual-link, stub, or nssa. That
> rules
> out everthing but distance. So here goes.
>
> *Here's my ACL:*
>
> Rack1R5(config-router)#do show ip access
> Standard IP access list PrefR1
> 50 permit 139.1.11.0 (8 matches)
> 20 permit 139.1.2.0 (8 matches)
> 30 permit 139.1.6.0 (8 matches)
> 40 permit 139.1.7.0 (8 matches)
>
> *Relevant info from the OSPF database:*
>
> Summary Net Link States (Area 1)
>
> Link ID ADV Router Age Seq# Checksum
> 139.1.2.0 150.1.1.1 1491 0x80000002 0x00FD94
> 139.1.2.0 150.1.2.2 1444 0x80000002 0x00EB25
> 139.1.6.0 150.1.1.1 1491 0x80000002 0x005974
> 139.1.6.0 150.1.2.2 1444 0x80000002 0x004C7F
> 139.1.7.0 150.1.1.1 481 0x80000002 0x004E7E
> 139.1.7.0 150.1.2.2 454 0x80000002 0x004189
> 139.1.11.0 150.1.1.1 1491 0x80000002 0x009574
> 139.1.11.0 150.1.2.2 1445 0x80000002 0x008DF9
>
> *And my OSPF config, lowering the distance to R1:*
>
> Rack1R5#show run | b router os
> router ospf 1
> router-id 150.1.5.5
> log-adjacency-changes
> network 139.1.15.5 0.0.0.0 area 1
> network 139.1.25.5 0.0.0.0 area 1
> network 150.1.5.5 0.0.0.0 area 1
> distance 109 150.1.1.1 0.0.0.0 PrefR1
>
> *But it's not working. It only changes for subnet 11, but the others
> don't
> change.:*
>
> Rack1R5#show ip route os | in 109
> O IA 139.1.11.0 [109/65] via 139.1.15.1, 00:07:01, Serial0/0/0.501
>
> Rack1R5#show ip route 139.1.2.0
> Routing entry for 139.1.2.0/24
> Known via "ospf 1", distance 110, metric 65, type inter area
> Last update from 139.1.25.2 on Serial0/0/0.502, 00:07:19 ago
> Routing Descriptor Blocks:
> * 139.1.25.2, from 150.1.2.2, 00:07:19 ago, via Serial0/0/0.502
> Route metric is 65, traffic share count is 1
> I'm stumped...again. Any ideas? I verified this against the solution
> guide, and as far as I can tell, it should work.
>
> Thanks in advance!
> Keith
>
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This archive was generated by hypermail 2.1.4 : Tue May 01 2007 - 08:28:35 ART