From: Ivan Kuchin (ivan@iip.net)
Date: Fri Dec 08 2006 - 13:11:46 ART
Any change in ospf process applied after restart ospf process.
You can do it with:
clear ip ospf process - command
> Hi Guyz,
>
>
>
> I am facing a problem in IEWB Vol I Lab 13 - Task 4.7; if anyone has come
> across it, please let me know the solution.
>
>
>
> Area 1 has two ABRs (R1 and R2), it is required that R5 which is a router
> behind R1 and R2 in Area 1, has to choose R1 as gateway for some
> destinations (say VLAN6, VLAN7). Restriction is not to use ip ospf cost,
> bandwidth, virtual-link, stub or nssa. I am using distance command with
> source ip and access-list at R5. The advertising router is 150.1.1.1 (I
> have verified it from sh ip route 139.1.7.0, 139.1.6.0). I am aware of the
> difference between next-hop and advertising router with reference to the
> distance command.
>
>
>
> Even after applying this command, the distance at R5 remains unchanged, but
> when I destroy the neighbor relationship to the 2nd ABR, the distance
> command reflects and it changes the distance for the selected destinations.
> Does anyone have any idea about it?
>
>
>
> The show outputs at R5 are:
>
>
>
> Rack1R5#sh run | b router ospf
>
> 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
>
> distance 109 150.1.1.0 0.0.0.255 VIA_R1
>
>
>
>
>
> Rack1R5#sh ip access-list VIA_R1
>
> Standard IP access list VIA_R1
>
> 10 permit 139.1.6.0
>
> 20 permit 139.1.7.0
>
>
>
>
>
> Before destroying the neighbor relationship to 2nd ABR (R2)
>
>
>
> Rack1R5#sh ip route ospf (extracted VLAN6 and VLAN7 routes only)
>
>
>
> O IA 139.1.6.0/24 [110/1564] via 139.1.25.2, 00:00:47, Serial0/0.25
>
> [110/1564] via 139.1.15.1, 00:00:47,
> Serial0/0.15
>
> O IA 139.1.7.0/24 [110/1564] via 139.1.25.2, 00:00:47, Serial0/0.25
>
> [110/1564] via 139.1.15.1, 00:00:47,
> Serial0/0.15
>
>
>
>
>
> After destroying the neighbor relationship to 2nd ABR (R2)
>
>
>
> Rack1R5(config)#int s0/0.25
>
> Rack1R5(config-subif)#shut
>
> Rack1R5(config-subif)#exit
>
> Rack1R5(config)#
>
> *Mar 2 14:09:36.310: %OSPF-5-ADJCHG: Process 1, Nbr 150.1.2.2 on
> Serial0/0.25 from FULL to DOWN, Neighbor Down: Interface down or detached
>
>
>
> Rack1R5(config)#do clear ip route *
>
> Rack1R5(config)#do sh ip route ospf
>
>
>
> O IA 139.1.6.0/24 [109/1564] via 139.1.15.1, 00:00:05, Serial0/0.15
>
> O IA 139.1.7.0/24 [109/1564] via 139.1.15.1, 00:00:05, Serial0/0.15
>
>
>
> Regards
>
> Ali
>
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-- iWAN kU^IN (mail to: ivan@iip.net) NOC iip.net 137-31-04
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