OSPF Interview Questions and Answers

OSPF (Open Shortest Path First) is an open standard link state routing Protocol. It is developed by IETF (Internet Engineering Task Force) as one of the IGP (Interior Gateway protocol).It is operating within a single Autonomous system. It is network layer protocol which works on the protocol no: 89 and   default Administrative Distance (AD) value is 110. OSPFv2 is used for IPv4 networks and OSPFv3 for IPv6 networks. OSPF uses a hello mechanism to detect neighbouring devices that run OSPF.

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