show ip protocols
//该命令查看ip路由协议配置和统计信息
R2#show ip protocols
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 10 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Redistributing: rip
Default version control: send version 1, receive 1
Interface Send Recv Triggered RIP Key-chain
Serial1/1 1 1
Serial1/2 1 1
Serial1/0 1 1
Automatic network summarization is in effect
Maximum path: 4
Routing for Networks:
172.16.0.0
172.31.0.0
Passive Interface(s):
Routing Information Sources:
Gateway Distance Last Update
172.16.23.3 120 00:00:20
172.16.24.4 120 00:00:10
172.31.12.1 120 00:00:14
Distance: (default is 120)