From: Ng, Kim Seng David (David) (ksng@xxxxxxxxx)
Date: Tue Feb 05 2002 - 11:30:01 GMT-3
OSPF IGRP
R1---------------------R2------------------------R3
172.16.1.0/24 172.16.20.0/24
Hi Group,
Need your help for the above config....
Objective: To advertise a IGRP default route from R2 into R3 to get to
destination networks in R1
Routing table for R2:
Gateway of last resort is 172.16.1.2 to network 172.16.0.0
* 172.16.0.0/16 is variably subnetted, 13 subnets, 5 masks
C 172.16.3.192/26 is directly connected, Loopback4
O 172.16.10.17/32 [110/65] via 172.16.1.2, 00:16:55, Serial0
C 172.16.20.0/24 is directly connected, Serial1
I 172.16.21.0/24 [100/8576] via 172.16.20.2, 00:01:13, Serial1
I 172.16.22.0/24 [100/8976] via 172.16.20.2, 00:01:13, Serial1
O 172.16.10.24/29 [110/74] via 172.16.1.2, 00:16:55, Serial0
C 172.16.4.0/26 is directly connected, Loopback1
S* 172.16.0.0/16 [1/0] via 172.16.1.2
C 172.16.1.0/24 is directly connected, Serial0
O 172.16.3.1/32 [110/65] via 172.16.1.2, 00:16:56, Serial0
C 172.16.2.0/24 is directly connected, Loopback0
C 172.16.10.8/29 is directly connected, Ethernet0
O 172.16.4.65/32 [110/65] via 172.16.1.2, 00:16:56, Serial0
Routing table for R3:
Gateway of last resort is not set
172.16.0.0/16 is subnetted, 5 subnets
C 172.16.20.0 is directly connected, Serial0
C 172.16.21.0 is directly connected, Ethernet0
C 172.16.22.0 is directly connected, Loopback0
I 172.16.1.0 [100/10476] via 172.16.20.1, 00:00:49, Serial0
I 172.16.2.0 [100/8976] via 172.16.20.1, 00:00:49, Serial0
As you can see, I have created a default route on R2 but somehow this
default route is not injected by R2 to R3. Therefore, R3 does not know
how to get to R1 networks. I did a "debug ip igrp transaction" on R2 and
R3 and verified that the default route was never advertised by R2 to R3.
I had ip classless enable on R2 and R3.
The following is part of R2 config:
router ospf 1
redistribute igrp 100 subnets
network 172.16.1.0 0.0.0.255 area 0
network 172.16.2.0 0.0.0.255 area 0
network 172.16.4.0 0.0.0.63 area 0
network 172.16.10.8 0.0.0.7 area 0
!
router igrp 100
redistribute static
redistribute ospf 1
passive-interface Ethernet0
passive-interface Loopback0
passive-interface Loopback1
passive-interface Serial0
network 172.16.0.0
default-metric 9600 0 255 1 1500
!
ip classless
ip default-network 172.16.0.0
ip route 172.16.0.0 255.255.0.0 172.16.1.2
Is it something to do with 'ip default-network' having the same classful
network as the igrp 'network' command??
Thanks in advance
David
This archive was generated by hypermail 2.1.4 : Thu Jun 20 2002 - 13:46:12 GMT-3