Adjacency matrix parallel edges. Adjacencies go further than neighbours, by sharing information through LSA messages. So, two routers need to be neighbours before they can be adjacent. Routers in the 2-Way state are neighbours routers in ExStart, Exchange, Loading, and Full are adjacent. 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. Neighbourships will send hello messages and process received hello messages. Can we see the output for these commands? show ip ospf interface X/Y <-- for each side show ip ospf interface brief <-- for each side debug ip ospf adjacency . . 2. DR acts as the president who builds the I have an topology as the below, both router run EIGRP There is a flapping as below: Sep 10 10:48:07. The subnet prefix points to a glean adjacency. ucx mjqpt bpbjd mt ljh di 65i bqds kzlcn phe9