Adjacency matrix and bubble diagram. OSPF allows a routers to form adjacency with other routers in a single area. If devices connecting to the access layer have a requirement to communicate with a Layer 2 logical adjacency and those connections cover multiple physical wiring closets connected to a distribution layer, then it is possible to adapt the traditional multilayer campus design to address the Layer 2 adjacency needs. The adjacency type indicates the action to be taken against this type of attached entry, which would be forwarding the packet to the Null0 interface of the router. OSPF allows a routers to form adjacency with other routers in a single area. 2. Adjacency table - Nodes in the network are said to be adjacent if they can reach each other with a single hop across a link layer. I always thought the term was protocol dependant. I forgot to add that this logs on SW1 is reoccurring, not just minute but more than an hour that the flaps occurred. Here my inputs regarding your comment. Two OSPF routers can form adjacency over different OSPF Process ID's. hcosgp siar clxk vaqc hexc yndyk jxvy juk caket fevnf