I saw this interesting issue about the metrics of summarized routes after being redistributed into RIP.
R2 is redistributing OSPF to RIP as follows:
R2#sho run | sec router rip router rip version 2 redistribute ospf 1 metric 2 network 192.168.0.0 no auto-summary
R1 has the following route:
R1#sho ip route | sec 126.96.36.199 188.8.131.52/32 is subnetted, 1 subnets R 184.108.40.206 [120/2] via 192.168.0.2, 00:00:11, FastEthernet0/0
R2(config)#int f0/0 R2(config-if)#ip summary-address rip 220.127.116.11 255.0.0.0 R1#sho ip route | sec 18.104.22.168 R 22.214.171.124/8 [120/3] via 192.168.0.2, 00:00:01, FastEthernet0/0
The metric increased by 1.
R2(config-if)#router rip R2(config-router)#auto-summary R1#sho ip route | sec 126.96.36.199 R 188.8.131.52/8 [120/2] via 192.168.0.2, 00:00:05, FastEthernet0/0
The metric is the same as when redistributed.
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