CCNP Enarsi

For OSPF, neighbour discovery is a critical component. Without OSPF routers dynamically discovering eachother they are unable to share routes, and obviously if in a production environment an OSPF state goes down, knowing how to make OSPF rediscover its neighbour is critical. OSPF Neighbour discovery is more complicated than that of EIGRP.

This is the first section of 1.10 for the CCNP Enarsi – OSPF. Before we actually get into troubleshooting OSPF it is a good idea for us all to be on the same page on what OSPF actually is. Especially if you need a refresher. For the CCNP OSPF is essential. What is OSPF? OSPF