Re: RIP offset list question

Hi Syed,

Please confirm topology as below:
Topology:

                   |------ R2
                   | \
                   | \
 BB1 --- R1-- FR p2p --R4

Your prefix coming from R1hub to R2 spoke and R4 spoke. R2 and R4 have
connection via Ethernet. Set offset-list to R2 FR link as 13.
Hope this will solve.

Cheers,
Kaushik

2009/10/11 Syed Khalid Ali <khalid_khursheed_at_hotmail.com>:
> I have the following scenario (from Narbik Workbook):
> |--- R2
> |
> BB1 --- R1-- FR p2p --R4
> IP addresses are as follows:
> BB1 fa0/0: 131.1.111.111/24
> R1 fa0/0: 130.1.111.111/24
> R1 ser2/0.14: 131.1.14.1/24
> R4: ser2/0.14: 131.1.4.4/24
>
> R1 configuration:
> ip access-list standard bb1-routes
> permit 107.1.1.0 0.0.0.127
> !
> router rip
> version 2
> no validate-update-source
> offset-list bb1-routes out 14 Serial2/0.14
> network 130.1.0.0
> network 131.1.0.0
> distribute-list prefix bb1-prefixes gateway bb1-source in FastEthernet0/0
> !
> R1 has the following routes (learned from BB1) that need to advertised to R4
> such that R4 should not advertise to its neighbor routers:
>
> show ip route | be Gateway
> Gateway of last resort is 131.1.12.2 to network 0.0.0.0
> 109.0.0.0/22 is subnetted, 1 subnets
> R 109.1.4.0 [120/1] via 131.1.111.111, 00:00:26
> 107.0.0.0/25 is subnetted, 1 subnets
> R 107.1.1.0 [120/1] via 131.1.111.111, 00:00:18
> 104.0.0.0/11 is subnetted, 1 subnets
> R 104.0.0.0 [120/1] via 131.1.111.111, 00:00:18
> 105.0.0.0/14 is subnetted, 1 subnets
> R 105.0.0.0 [120/1] via 131.1.111.111, 00:00:18
> R* 0.0.0.0/0 [120/1] via 131.1.12.2, 00:00:06, Serial2/0.12
>
> After setting this configuration 107.1.1.0 should be advertised to R4 with
> metric=14. But when I check the route table of R4, this 107.0.0.0/8 is still
> there reachable with metric=1
>
> If I change the access list with 107.0.0.0 0.0.0.127, R1 start advertising
> with metric=14 and therefore R4 has this route with metric=15 in it route
> table.
>
> I need explanation from expert on this group.
>
>
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Received on Sun Oct 11 2009 - 11:47:46 ART