Router_A#show ip protocols
Routing Protocol is "igrp 1"
Sending updates every 90 seconds, next due in 73 seconds
Invalid after 270 seconds, hold down 280, flushed after 630
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
IGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
IGRP maximum hopcount 100
IGRP maximum metric variance 1
Redistributing: igrp 1
Routing for Networks:
172.16.0.0
172.17.0.0
Routing Information Sources:
Gateway Distance Last Update
172.17.0.2 100 00:00:12
Distance: (default is 100)