From: Eugene Ward (eward15@juno.com)
Date: Tue Apr 10 2007 - 14:06:28 ART
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
This archive was generated by hypermail 2.1.4 : Tue May 01 2007 - 08:28:35 ART