We are running IGP as OSPF with multiple areas and observing high CPU only in couple of routers. These routers are configured ABR and the router CPU is constantly peaking due to OSPF. Though there are many other routers which are configured as ABR with less CPU only these routers are heavily loaded with CPU.
Is there any way to specifically troubleshoot the OSPF issue
How do we identify the cause of the issue due to what process in OSPF
thanks in advance