Viewing OSPF Packets

Viewing OSPF Packets
The debug ip ospf packet command provides you with information contained within each
OSPF packet, including the version of OSPF, the router ID, and the area ID:
plano#debug ip ospf packet
OSPF packet debugging is on
plano#
3d02h: OSPF: rcv. v:2 t:1 l:48 rid:192.168.24.1
aid:0.0.0.0 chk:B7DA aut:0 auk: from Serial2/0.1
3d02h: OSPF: rcv. v:2 t:1 l:48 rid:192.168.24.1
aid:0.0.0.0 chk:B7DA aut:0 auk: from Serial2/0.1
3d02h: OSPF: rcv. v:2 t:1 l:48 rid:192.168.24.1
aid:0.0.0.0 chk:B7DA aut:0 auk: from Serial2/0.1
The commands covered in this section provide you with great detail about OSPF and its operation.
In order to become proficient with them, you will need to practice, but I don’t suggest
doing this on your company network. Issuing the debug ip ospf packet command on a production
network will cause high CPU utilization and could crash the router. So set up a lab and
start playing around with these commands, and before you know it, you’ll be able to troubleshoot
any OSPF issues out there.