[c-nsp] RIP and Secondary IP (Part Two)

[Bruce Pinsky]

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Fernando Rojas wrote:
> It is peculiar to see as if I clear in fastethernet0 a secondary IP in
> subnet 172.16.1.0/24 ( 172.16.1.1 or 172.16.1.3) , RIP sends updates
> correctly!! why this way it works?
> 

Clear in what way?

> Deactivate Split Horizon under FastEthernet0 is not good solution for my
> network.
>

Then all routers on that segment should know about all the subnets that
exist on that segment.



> ----------
> 
> 
> Hi,
> 
> I have migrated the configuration from a 1600 to 1800 Cisco Router.
> 
> In a 1600, RIP is sending v2 update correctly. But with the same
> configuration, 1800 is not sending a update.
> 
> In a debug IP RIP:
> 
> 00:47:21: RIP: sending v2 update to 224.0.0.9 via FastEthernet0 (172.18.1.1)
> 00:47:21: RIP: build update entries - suppressing null update
> 
> 
> I have this configuration in a router 1801:
> 
> interface FastEthernet0
>  ip address 172.16.1.1 255.255.255.0 secondary
>  ip address 172.18.1.1 255.255.255.0 secondary
>  ip address 172.16.1.3 255.255.255.0 secondary
>  ip address 192.168.0.1 255.255.248.0
>  no ip redirects
>  ip nat inside
>  ip rip advertise 5
>  ip virtual-reassembly
>  ip policy route-map InterLAN
>  speed 100
>  full-duplex
>  no cdp enable
> 
> router rip
>  version 2
>  timers basic 5 15 30 60
>  redistribute connected
>  redistribute static
>  network 172.18.0.0
>  neighbor 172.18.1.2
> !
> no ip classless
> ip route 0.0.0.0 0.0.0.0 172.16.1.4
> ip route 192.168.9.0 255.255.255.0 172.16.1.4
> ip route 192.168.11.0 255.255.255.0 172.16.1.4
> ip route 192.168.15.0 255.255.255.0 172.16.1.4
> !
> !
> 
> I recevied correctly update route from a neighbor (172.18.1.2),
> but this router is not advertised nothing!
> 
> 
> IOS version: 12.4(2)XA ... Also update IOS router with lastest version (
> 12.4.4T1), but it did not work.
> 
> 
> Somebody can help me?
> 
> Thanks in advance!
> _______________________________________________
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bep

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