From: fwells12 (fwells12@xxxxxxxxxxx)
Date: Fri Dec 28 2001 - 03:36:42 GMT-3
Play around with prefix lists and summary commands. You will figure it out.
----- Original Message -----
From: "Clark J" <clark.j@163.com>
To: <ccielab@groupstudy.com>
Sent: Thursday, December 27, 2001 7:10 PM
Subject: Can I change the RIP database ?
> Dear CCIEs and Near CCIEs ,
>
> R2 connects to R4 via their serial interfaces , and RIP is the routing
protocol ,
>
> R2#sh ip int brief
> Interface IP-Address OK? Method Status
Protocol
> Ethernet0 135.1.2.1 YES manual up up
> Loopback0 135.1.20.1 YES manual up up
> Serial0 135.1.24.2 YES manual up up
> Serial1 unassigned YES NVRAM down
down
> R2#show run
> router rip
> network 135.1.0.0
> no auto-summary
> !
> R4#sh ip int brief
> Interface IP-Address OK? Method Status
Protocol
> FastEthernet0 135.1.4.1 YES manual up up
> Serial0 135.1.40.1 YES manual up
up
> Serial1 135.1.41.1 YES manual up
up
> Serial2 135.1.24.4 YES manual up
up
> Serial3 135.1.43.1 YES manual up
up
> R4# sh run
> !
> router rip
> passive-interface Serial0
> passive-interface Serial1
> passive-interface Serial3
> network 135.1.0.0
> no auto-summary
> !
> R4# show ip rip database
> 135.1.0.0/16 auto-summary
> 135.1.2.0/24
> [1] via 135.1.24.2, 00:00:02, Serial2
> 135.1.4.0/24 directly connected, FastEthernet0
> 135.1.20.0/24
> [1] via 135.1.24.2, 00:00:02, Serial2
> 135.1.24.0/24 directly connected, Serial2
> 135.1.40.0/24 directly connected, Serial0
> 135.1.41.0/24 directly connected, Serial1
> 135.1.43.0/24 directly connected, Serial3
> R4#
>
> My question is :
>
> I want R2 only learn 135.1.4.0/24 from R4 , and the routes such as
135.1.4x.0/24 will be filtered, yes , it is easy , I can use distribute-list
to implement it ;
>
> But I just want R4 don't put 135.1.4x.0/24 into its RIP database , is it
possible ? Or how can I do ?
>
> Thanks in advance !
>
> Clark J
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