Simple setup with big problems and i cant pinpoint it.
Pleasy help me out with this one guys.
L1-L3 Topology:
2 routers called Router6 and Router8
Router6 ser1 is wired to Router8 ser1 using network 20.0.4.0/24
Router6 eth0 has network 30.0.0.0/24
Router8 tokenRing0 has network 20.0.0.0/24
Routing Topology:
Router6 has RIPv2
Router8 runs RIPv2 on its ser1 only
and runs IGRP on tokenring.
Router8 redistributes RIP into IGRP and reverse.
Problem:
Router6 does all perfect with RIP
Router8 receives RIP well and redistributes it into IGRP on the other interfaces BUT it markes those routes learned from RIP as "Inaccessible"
see debugoutput on Router8:
Router8#debug ip rip
Router8#debug ip igrp transactions
00:33:53: RIP: sending v2 update to 224.0.0.9 via Serial1 (20.0.4.8)
00:33:53: RIP: build update entries
00:33:53: 20.0.0.0/24 via 0.0.0.0, metric 1, tag 0
00:34:00: RIP: received v2 update from 20.0.4.6 on Serial1
00:34:00: 30.0.0.0/24 via 0.0.0.0 in 1 hops
00:34:00: 172.16.0.0/24 via 0.0.0.0 in 1 hops
00:34:21: RIP: sending v2 update to 224.0.0.9 via Serial1 (20.0.4.8)
00:34:21: RIP: build update entries
00:34:21: 20.0.0.0/24 via 0.0.0.0, metric 1, tag 0
00:34:22: IGRP: sending update to 255.255.255.255 via TokenRing0 (20.0.0.8)
00:34:22: subnet 20.0.4.0, metric=8476
00:34:22: network 172.16.0.0, metric=Inaccessible
00:34:22: network 30.0.0.0, metric=Inaccessible
WHY?
Dont tell me to use other routing protocols please, i want to understand the inner workings of IGRP for my certification.
Configs are:
Router6:
ip subnet-zero
!
interface Loopback1
ip address 172.16.0.6 255.255.255.0
!
interface Ethernet0
ip address 30.0.0.6 255.255.255.0
no ip route-cache
!
interface Serial1
ip address 20.0.4.6 255.255.255.0
no ip route-cache
!
router rip
version 2
passive-interface Ethernet0
passive-interface Loopback1
network 20.0.0.0
network 30.0.0.0
network 172.16.0.0
no auto-summary
!
ip classless
Router8:
ip subnet-zero
!
interface Serial1
ip address 20.0.4.8 255.255.255.0
no ip route-cache
no ip mroute-cache
clockrate 2000000
!
interface TokenRing0
ip address 20.0.0.8 255.255.255.0
no ip route-cache
no ip mroute-cache
ring-speed 16
!
router rip
version 2
redistribute igrp 666
passive-interface TokenRing0
network 20.0.0.0
no auto-summary
!
router igrp 666
redistribute rip
passive-interface Serial1
network 20.0.0.0
!
ip classless
