Router_A#debug ip rip
RIP protocol debugging is on
RouterA#
00:15:53: RIP: sending v2 update to 224.0.0.9 via Ethernet0/0 (172.16.0.1)
00:15:53: 172.17.0.0/16 -> 0.0.0.0, metric 1, tag 0
00:15:53: RIP: sending v2 update to 224.0.0.9 via Serial0/0 (172.17.0.1)
00:15:53: 172.16.0.0/16 -> 0.0.0.0, metric 1, tag 0
00:15:57: RIP: ignored v2 packet from 172.17.0.2 (invalid authentication)
00:16:22: RIP: sending v2 update to 224.0.0.9 via Ethernet0/0 (172.16.0.1)
00:16:22: 172.17.0.0/16 -> 0.0.0.0, metric 1, tag 0
00:16:22: RIP: sending v2 update to 224.0.0.9 via Serial0/0 (172.17.0.1)
00:16:22: 172.16.0.0/16 -> 0.0.0.0, metric 1, tag 0