We have around 300 routers in our area 0 in OSPF. But we are observing high CPU due to OSPF process only on some routers not on any other routers. I would like to know if any SPF calculation happens that update will be propagated to all the routers in the same area and every router will have a same impact (i mean the routers with same platform, memory, IOS and load). But it is not happening uniformly in our network. Is there any specific thing that I need to check.
Thanks in advance.