The Complete IS-IS Routing Protocol -

website is is IS-IS protocol requires configuration both at interface level and globally R1 ! interface Loopback1 ip address ip router isis 1 ! isl vs pes The network is similar to an OSPF network topology with multiple areas The backbone area contains all the routers in Area 1 and Level-1-2

is is IS-IS, or Intermediate System to Intermediate System, is an open standard routing protocol ISO published the standard as a way to route datagrams as part  IS-IS has its own set of design challenges However, it allows flexibility in ways OSPF is not capable of   IS-IS protocol requires configuration both at interface level and globally R1 ! interface Loopback1 ip address ip router isis 1 !

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