OS10 Enterprise Edition User Guide Release 10.4.0E(R3)



OSPFv2 supports IPv4 address families. OSPFv2 routers initially exchange hello messages to set up adjacencies with neighbor routers. The hello process establishes adjacencies between routers of the AS. It is not required that every router within the AS areas establish adjacencies. If two routers on the same subnet agree to become neighbors through this process, they begin to exchange network topology information in the form of LSAs.

In OSPFv2, neighbors on broadcast and non-broadcast multiple access (NBMA) network links are identified by their interface addresses, while neighbors on other types of links are identified by router-identifiers (RID).

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