RIP v2 auto-summary

From: Athaide, Dwayne (DAthaide@eprod.com)
Date: Fri Dec 28 2007 - 17:45:24 ART


When I enable no-auto-summary under rip version 2 and do a show ip rip
database. Why is there an entry of 172.29.0.0/16 being summarized.

How does the no-auto and auto work for Rip Version 2. The database and
route table look the same for either command

Thanks

NO-AUTOSUMMARY

R2#sho ip rip database

172.29.0.0/16 auto-summary

172.29.12.0/26 directly connected, FastEthernet0/0

172.29.24.0/24 directly connected, Serial0/1/0.24

172.29.25.0/24 directly connected, Serial0/2/0

172.29.25.5/32 directly connected, Serial0/2/0

172.29.40.0/24

    [1] via 172.29.24.4, 00:00:25, Serial0/1/0.24

172.29.100.0/29 directly connected, Serial0/1/0.256

192.168.4.0/24 auto-summary

192.168.4.0/24

    [1] via 172.29.24.4, 00:00:25, Serial0/1/0.24

R2#sho ip route rip

     172.29.0.0/16 is variably subnetted, 7 subnets, 5 masks

R 172.29.40.0/24 [105/1] via 172.29.24.4, 00:00:19, Serial0/1/0.24

     192.168.4.0/32 is subnetted, 1 subnets

R 192.168.4.4 [105/1] via 172.29.24.4, 00:00:19, Serial0/1/0.24

R2#

AUTOSUMMARY

R2#sho ip rip database

172.29.0.0/16 auto-summary

172.29.12.0/26 directly connected, FastEthernet0/0

172.29.24.0/24 directly connected, Serial0/1/0.24

172.29.25.0/24 directly connected, Serial0/2/0

172.29.25.5/32 directly connected, Serial0/2/0

172.29.40.0/24

    [1] via 172.29.24.4, 00:00:00, Serial0/1/0.24

172.29.100.0/29 directly connected, Serial0/1/0.256

192.168.4.0/24 auto-summary

192.168.4.0/24

    [1] via 172.29.24.4, 00:00:00, Serial0/1/0.24

R2#

R2#sho ip route rip

     172.29.0.0/16 is variably subnetted, 7 subnets, 5 masks

R 172.29.40.0/24 [105/1] via 172.29.24.4, 00:00:16, Serial0/1/0.24

R 1



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