OSPF

OSPF (Open Shortest Path First).

OSPF Features

 * OSPF AD is 110.
 * Metric is defined as Cost
 * To form adjacency following parameters must match: Authentication, Area, DR/BDR capability, Timers, Stub Area Flag, MTU and subnet

OSPF States

 * Down: No Hello’s have been received from neighbor. Hello’s sent every Hellointerval.
 * Init
 * 2Way: Router has seen its own Router ID (RID) in the Neighbor field of the neighbor’s hello packets

Links

 * http://routingnull0.com/2013/09/24/hour-36-ospf-review-part-1/