From: NING YAO (cn_n_yao@yahoo.com)
Date: Fri Dec 13 2002 - 00:35:49 GMT-3
Hi, KHAN,
IGRP is a kind of class routing protocol. That means when IGRP broadcast routing table, no subnet information including. The subnet information have to recovere by other IGRP router. So you should use the same subnet mask in your network.
Yao NingI have following scenario
L0 ---- R1 s0-------------s0 R2 E0---------
L1 ------|
Here are my configs
!
hostname R1
!
enable password ccie
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 155.100.16.129 255.255.255.128
!
interface Loopback1
ip address 155.100.17.1 255.255.255.0
!
interface Ethernet0
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
interface Serial0
ip address 155.100.4.1 255.255.255.0
no ip route-cache
no ip mroute-cache
no fair-queue
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
router ospf 1
log-adjacency-changes
redistribute igrp 100 subnets
network 155.100.17.0 0.0.0.255 area 0
!
router igrp 100
redistribute connected
redistribute static
redistribute ospf 1
network 155.100.0.0
default-metric 10000 1000 255 1 1500
!
on R2
interface Loopback0
ip address 10.1.1.1 255.0.0.0
!
interface Ethernet0
ip address 172.16.1.1 255.255.255.0
!
interface Serial0
ip address 155.100.4.2 255.255.255.0
no fair-queue
clockrate 64000
!
interface Serial1
no ip address
shutdown
!
router igrp 100
network 10.0.0.0
network 155.100.0.0
!
some how R2 is not able to see 155.100.16.128 subnet from R1 I am not sure
why OSPF is not redistributing this subnet into IGRP
R2#sh 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
155.100.0.0/24 is subnetted, 2 subnets
I 155.100.17.0 [100/8976] via 155.100.4.1, 00:00:51, Serial0
C 155.100.4.0 is directly connected, Serial0
172.16.0.0/24 is subnetted, 1 subnets
C 172.16.1.0 is directly connected, Ethernet0
C 10.0.0.0/8 is directly connected, Loopback0
any ideas
thanks
Iftikhar
.
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This archive was generated by hypermail 2.1.4 : Fri Jan 17 2003 - 17:21:44 GMT-3