From: Packet Man (ccie2b@hotmail.com)
Date: Sat Jan 31 2004 - 17:20:43 GMT-3
Shibu,
Without knowing all the details of your set up, I can't be 100% sure of what
the problem is, however...
You may recall that the default behavior of a Classful routing protocol is
to automatically summarize routes to their classful length on a boundary
router. In your topology, R4 is a boundary router between 2 different major
networks, 10.0.0.0/8 and 192.168.12.196/24.
What I would do is turn on debug ip rip on both routers and see what routes
are being advertised.
I suspect that if you disable auto summarization, that may resolve the
problem.
HTH
>From: Shibu Nair <shinair@cisco.com>
>Reply-To: Shibu Nair <shinair@cisco.com>
>To: <ccielab@groupstudy.com>
>Subject: RIP v2 routes
>Date: Sat, 31 Jan 2004 12:03:21 -0800
>
>Hi
>Setup:
>
>R3 ------Ethernet----------R4---ethernet
>
>R3 and $ are connected using ethernet.
>R3:
>interface Ethernet1/0
> ip address 192.168.12.65 255.255.255.224
>
>R4:
>interface Ethernet2/0
> ip address 192.168.12.196 255.255.224.0
>
>!
>interface Ethernet0/0
> ip address 10.33.35.4 255.255.240.0
>
>All links are up and RIP v2 is enabled on both routers.
>Now i am supposed to see 10.33.35.4 /20 on R3 as part of the RIP routes.
>I do not see that on R3.
>
>R4 is getting other routes through R3 ( R3 is connected to other RIP
>routers).
>But no way i can see R4 ethernet or loopback network on R3. Strange.
>Pls advice
>Regards
>Shibu
>
>
>R4#sh runn
>Building configuration...
>
>Current configuration : 753 bytes
>!
>version 12.2
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname R4
>!
>!
>clock timezone EST -5
>ip subnet-zero
>no ip domain-lookup
>!
>!
>!
>!
>interface Loopback0
> ip address 10.33.50.10 255.255.240.0
>!
>interface Ethernet0/0
> ip address 10.33.35.4 255.255.240.0
> no keepalive
>!
>interface Ethernet1/0
> no ip address
> shutdown
>!
>interface Ethernet2/0
> ip address 192.168.12.196 255.255.224.0
>!
>interface Serial3/0
> no ip address
> shutdown
>!
>interface Serial4/0
> no ip address
> shutdown
>!
>interface Serial5/0
> ip address 10.33.90.4 255.255.240.0
> shutdown
>!
>router rip
> version 2
> network 10.0.0.0
> network 192.168.12.0
>!
>ip classless
>no ip http server
>!
>!
>!
>line con 0
>line aux 0
>line vty 0 4
> login
>!
>end
>
>R4: routing table:
>Gateway of last resort is not set
>
> 192.168.12.0/27 is subnetted, 1 subnets
>R 192.168.12.64 [120/1] via 192.168.12.195, 00:00:10, Ethernet2/0
>R 172.17.0.0/16 [120/1] via 192.168.12.195, 00:00:10, Ethernet2/0
>R 192.168.200.0/24 [120/2] via 192.168.12.195, 00:00:10, Ethernet2/0
> 10.0.0.0/20 is subnetted, 2 subnets
>C 10.33.32.0 is directly connected, Ethernet0/0
>C 10.33.48.0 is directly connected, Loopback0
>C 192.168.0.0/19 is directly connected, Ethernet2/0
>
>
>R3#sh runn
>Building configuration...
>
>Current configuration : 882 bytes
>!
>version 12.2
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname R3
>!
>!
>clock timezone EST -5
>ip subnet-zero
>!
>!
>!
>!
>interface Ethernet0/0
> ip address 192.168.83.3 255.255.255.0
> shutdown
>!
>interface Ethernet1/0
> ip address 192.168.12.65 255.255.255.224
>!
>interface Ethernet2/0
> ip address 192.168.12.195 255.255.255.224
>!
>interface Serial3/0
> ip address 172.17.1.3 255.255.255.0
> no fair-queue
>!
>interface Serial4/0
> no ip address
> shutdown
>!
>interface Serial5/0
> ip address 172.17.2.3 255.255.255.0
> ip rip send version 1
> ip rip receive version 1
>!
>interface Serial6/0
> no ip address
> shutdown
>!
>router rip
> version 2
> passive-interface Ethernet1/0
> network 172.17.0.0
> network 192.168.12.0
> network 192.168.83.0
> neighbor 192.168.12.67
>!
>ip classless
>no ip http server
>!
>!
>!
>line con 0
>line aux 0
>line vty 0 4
> login
>!
>end
>
>R3 show ip route:
>
>Gateway of last resort is not set
>
> 192.168.12.0/27 is subnetted, 2 subnets
>C 192.168.12.64 is directly connected, Ethernet1/0
>C 192.168.12.192 is directly connected, Ethernet2/0
> 172.17.0.0/24 is subnetted, 3 subnets
>R 172.17.4.0 [120/1] via 172.17.2.7, 00:00:29, Serial5/0
>C 172.17.1.0 is directly connected, Serial3/0
>C 172.17.2.0 is directly connected, Serial5/0
>R 192.168.200.0/24 [120/1] via 192.168.12.67, 00:00:47, Ethernet1/0
>
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This archive was generated by hypermail 2.1.4 : Mon Feb 02 2004 - 09:07:52 GMT-3