From: Yunjie Chen (ychen@houston.sns.slb.com)
Date: Sun Jun 29 2003 - 03:33:53 GMT-3
Hi,
A question regarding RIP....I know where the problem may be....but dunno how to fix it.... any comments?
R1(f0/0)<-------->(f0/0)R7 ( RIP is running between them as routing protocol)
R1 has a loopback interface which is 172.17.59.129/26, f0/0 is 172.17.59.65/26
R7's f0/0 is 172.17.59.66/26. R7 connects to whole bunch of other routers with different routing protocols like OSPF, EIGRP, which are both redistribute to RIP.
My question is, when i run debugging ( debug ip rip) i can see the rip conversation goes ok. But the following is the result of sho ip rip database
r7#sho ip rip database
172.17.0.0/16 auto-summary
172.17.59.0/26 redistributed
[3] via 172.17.59.194,
172.17.59.64/26 directly connected, FastEthernet0/0.17
172.17.59.128/26
[1] via 172.17.59.65, 00:00:04, FastEthernet0/0.17
172.17.59.192/28 redistributed
[3] via 172.17.59.246,
172.17.59.208/28 directly connected, Serial2/2
172.17.59.224/28 directly connected, Loopback0
172.17.59.246/32 redistributed
[3] via 172.17.59.246,
172.17.59.252/30 directly connected, FastEthernet0/0.47
r1#sho ip rip database
172.17.0.0/16 auto-summary
172.17.59.0/26
[3] via 172.17.59.66, 00:00:20, FastEthernet0/0
172.17.59.64/26 directly connected, FastEthernet0/0
172.17.59.128/26 directly connected, Loopback0
172.17.59.246/32
[3] via 172.17.59.66, 00:00:20, FastEthernet0/0
As we can see, R7 has a lot of RIP routes...while R1 is not picking them up, which results in the routing table in R1 looks like,
r1#sho ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.17.0.0/16 is variably subnetted, 4 subnets, 2 masks
C 172.17.59.128/26 is directly connected, Loopback0
R 172.17.59.246/32 [120/3] via 172.17.59.66, 00:00:17, FastEthernet0/0
R 172.17.59.0/26 [120/3] via 172.17.59.66, 00:00:17, FastEthernet0/0
C 172.17.59.64/26 is directly connected, FastEthernet0/0
I am suspecting that because of RIP is a classful routing protocol...so....some of the routing information is missing transferring from R7-->R1...
Any suggestions to fix this?
Thanks a lot!
Yunjie
This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:14 GMT-3