This post originally appeared on the Packet Pushers’ Ignition site on March 24, 2020. In both OSPFv2 (IPv4) and OSPFv3 (IPv6), the router ID (RID) is a 32-bit number assigned to the router. The RID must be unique within the OSPF network, as a RID provides a point of origin for link state advertisements (LSAs).... Read more »
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