about OSPF summarization

From: sherry huies (cholscurry@xxxxxxxxxxx)
Date: Fri Feb 08 2002 - 04:35:49 GMT-3


   
Hi all,

in ccie real lab, what's the cisco IOS version?

I have a problem on IOS about OSPF summarization.
my OSPF is redistributed to IGRP(r4) domain.
between ospf and igrp, the network mask is /24.
so i need to summarization mask's/29 to /24.
but i have some ios problem.

on ios 12.1.9 the internal summarization is good.

but on ios 12.1.5
the router is not make the summarization route.
======================================================
IOS 12.1.9
r3#sh run
interface Ethernet0/0
 ip address 140.3.34.1 255.255.255.248
interface Ethernet0/1
 ip address 140.3.5.1 255.255.255.0

router ospf 1
 redistribute igrp 10
 network 140.3.34.0 0.0.0.7 area 1
 area 1 range 140.3.34.0 255.255.255.0

router igrp 10
 redistribute ospf 1
 network 140.3.0.0

r3#sh ip route
O 140.3.34.0/24 is a summary, 00:02:03, Null0
C 140.3.34.0/29 is directly
connected,Ethernet0/0
C 140.3.5.0/24 is directly connected,
Ethernet0/1

r4#sh ip route
C 140.4.5.0/24 is directly connected,
Ethernet0/1
I 140.3.34.0/24 [100/610] via 140.3.5.4,
00:00:20, Ethernet0/0

======================================================
on IOS 12.1.5
r3#sh run
router ospf 1
 network 140.3.34.0 0.0.0.7 area 1
 area 1 range 140.3.34.0 255.255.255.0

router igrp 10
 redistribute ospf 1
 network 140.3.0.0

r3#sh ip route
C 140.3.34.0/29 is directly
connected,Ethernet0/0
C 140.3.5.0/24 is directly connected,
Ethernet0/1

r4#sh ip route
C 140.4.5.0/24 is directly connected,
Ethernet0/1



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