RE: ospf--igrp redistribute problem

From: Lionel Hunt (Lionel@sts.co.za)
Date: Sun Jan 05 2003 - 14:08:51 GMT-3


Hi.

The reason you have this is because RIP and IGRP are classful protocols and
you would thus have to summarize the networks that are no at the classful
boundary to the classful address boundary.

Hope this clears that up.

Cheers

-----Original Message-----
From: Tony Schaffran [mailto:tschaffran@cconlinelabs.com]
Sent: Sunday, January 05, 2003 6:19 PM
To: 'Fan Shan'; ccielab@groupstudy.com
Subject: RE: ospf--igrp redistribute problem

I have experienced the same issue with redistributing OSPF into RIP. I
found that summarizing my routes to a classfull network allowed them to
be redistributed into RIP. Try that if you can.

If there is a better way, I would like to hear it.

 
Tony Schaffran
Network Analyst
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE
 
CCOnlineLabs.com
http://www.cconlinelabs.com

 
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Fan Shan
Sent: Saturday, January 04, 2003 10:55 PM
To: ccielab@groupstudy.com
Subject: ospf--igrp redistibute problem

I have ip route like this :
#show ip route

O E2 197.168.8.0/24 [110/100] via 133.1.10.2, 00:08:09, Serial0/0.1
O E2 197.168.2.0/24 [110/100] via 133.1.10.2, 00:08:09, Serial0/0.1
     133.1.0.0/16 is variably subnetted, 17 subnets, 6 masks
I 133.1.4.0/24 [100/8976] via 133.1.45.4, 00:00:48, Serial0/0.2
C 133.1.5.0/24 is directly connected, Loopback0
O 133.1.6.6/32 [110/65] via 133.1.56.6, 00:08:09, Serial0/1
O 133.1.2.2/32 [110/65] via 133.1.10.2, 00:08:09, Serial0/0.1
O 133.1.3.3/32 [110/65] via 133.1.10.3, 00:08:10, Serial0/0.1
O E2 133.1.1.0/24 [110/100] via 133.1.10.2, 00:08:10, Serial0/0.1
O E2 133.1.2.0/24 [110/100] via 133.1.10.2, 00:08:10, Serial0/0.1
O E2 133.1.12.0/24 [110/100] via 133.1.10.2, 00:08:10, Serial0/0.1
C 133.1.10.0/28 is directly connected, Serial0/0.1
O IA 133.1.22.0/27 [110/74] via 133.1.10.2, 00:08:10, Serial0/0.1
O IA 133.1.32.0/25 [110/74] via 133.1.10.2, 00:08:15, Serial0/0.1
                      [110/74] via 133.1.10.3, 00:08:15, Serial0/0.1
C 133.1.35.0/30 is directly connected, BRI0/0
I 133.1.44.0/24 [100/8576] via 133.1.45.4, 00:00:54, Serial0/0.2
C 133.1.45.0/24 is directly connected, Serial0/0.2
C 133.1.55.0/24 is directly connected, Ethernet0/0
C 133.1.56.0/24 is directly connected, Serial0/1
O IA 133.1.66.0/24 [110/74] via 133.1.56.6, 00:08:15, Serial0/1
O E2 197.168.4.0/24 [110/100] via 133.1.10.2, 00:08:15, Serial0/0.1
     151.100.0.0/22 is subnetted, 1 subnets
O E2 151.100.32.0 [110/100] via 133.1.10.2, 00:08:15, Serial0/0.1
     150.100.0.0/24 is subnetted, 1 subnets
O E2 150.100.1.0 [110/100] via 133.1.10.2, 00:08:15, Serial0/0.1
O E2 197.168.6.0/24 [110/100] via 133.1.10.2, 00:08:15, Serial0/0.1

and I have ospf route redistribute into igrp like this:
router igrp 1
 redistribute ospf 100 metric 2000 100 255 1 1500 match internal
external 1 external 2
....

The interface running igrp is /24 net mask

By using "debug ip ospf transaction" command, I see this:2d21h: IGRP:
sending update to 255.255.255.255 via Serial0/0.2 (133.1.45.5)
2d21h: subnet 133.1.5.0, metric=501
2d21h: subnet 133.1.1.0, metric=5100
2d21h: subnet 133.1.2.0, metric=5100
2d21h: subnet 133.1.12.0, metric=5100
2d21h: subnet 133.1.55.0, metric=1100
2d21h: subnet 133.1.56.0, metric=8476
2d21h: subnet 133.1.66.0, metric=5100
2d21h: network 197.168.8.0, metric=5100
2d21h: network 197.168.2.0, metric=5100
2d21h: network 197.168.4.0, metric=5100
2d21h: network 151.100.0.0, metric=5100
2d21h: network 150.100.0.0, metric=5100
2d21h: network 197.168.6.0, metric=5100

I noticed those ospf routes with net mask which is not /24 are not
redistributed into igrp, Why?
I think they will be redistribute as /24 as the interface specified.
And how to make them redistributed into igrp?
.
.
.



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