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

[Fernando Rojas]

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?

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

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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!