ospf - rip redistribution issue.

From: navaid@rogers.com
Date: Tue Sep 16 2003 - 14:42:36 GMT-3


I am redistributing ospf E2 routes in rip v1. I have no auto-summary enabled in rip but next hop rip v1 router receive a classful summary route (should summarized as per mask which is 24 bit).

ospf----R2------rip-------R4

R2 redistributing ospf to rip.
ospf routes are :
              10.1.1.1
              10.2.2.2
               | | | |
              10.9.9.9

R4 receive summary that is 10.0.0.0
Mask on R2 interface pointing to R4 is 24 bit.
All ospf routes are Type E2.

---------R2----------------
router rip
 version 1
 redistribute ospf 1 metric 2 match internal external 1 external 2 route-map ospf2rip
 passive-interface default
 no passive-interface Serial0.1
 network 172.31.0.0
 no auto-summary
!
router ospf 1
 log-adjacency-changes
 area 0 authentication message-digest
 area 12 virtual-link 10.1.1.1 authentication message-digest
 area 12 virtual-link 10.1.1.1 message-digest-key 1 md5 7 00071A150754
 redistribute connected subnets route-map conn2ospf
 redistribute rip subnets route-map rip2ospf
 network 172.31.12.0 0.0.0.255 area 12
 network 172.31.25.0 0.0.0.255 area 0
 network 172.31.100.0 0.0.0.7 area 0
 neighbor 172.31.100.6 priority 1
 neighbor 172.31.100.5 priority 1
!
--------R4--------------------
!
router rip
 version 1
 passive-interface default
 no passive-interface Serial0/0
 network 10.0.0.0
 network 172.31.0.0
 no auto-summary
!

1

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