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OSPF is mostly used between a Core switch and downstream OSPF enabled devices like distribution switches, firewalls, etc. If the downstream device is connected via link aggregation to a Nexus vPC pair and vPC peer-gateway is configured, you will encounter OSPF adjacency flaps. This will not be noticed unless the OSPF adjacencies are monitored or debugged, so most engineers are not even aware that...

In the modern networking world routing protocols fall into two distinct camps, Link-state and Distance Vector. Being a network consultant I often have customers asking me which routing protocol is better so I figure I would create a post comparing the different routing protocols.