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OSPF router that
generates LSAs for a multiaccess network and has other special responsibilities
in running OSPF. Each multiaccess OSPF network that has at least two attached
routers has a designated router that is elected by the OSPF Hello protocol. The
designated router enables a reduction in the number of adjacencies required on
a multiaccess network, which in turn reduces the amount of routing protocol
traffic and the size of the topological database.
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