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ISIS

IS-IS Mechanics – CLNP

1. ISO OSI Terminology ISO OSI term TCP/IP Equivalent End System Host Intermediate System Router Circuit Interface Area Area Domain Autonomous System IS-IS = Intermediate System to Intermediate System CLNP = Connection-Less Network Protocol = Layer 3 network protocol that is used to communicate between ESes. CLNP offers a CLNS …

IS-IS 101

1. Starting the routing process Starting IS-IS process requires a 2 step configuration: 1. In the global config R(config)# router isis [AREA-TAG] !AREA-TAGs are used to run multiple IS-IS processes. Default: NULL R(config-router)# net NETWORK-ENTITY-TITLE !NETWORK-ENTITY-TITLE is in NSAP format. E.g 49.0001.0010.0100.1001.00 2. On the interfaces that will be enabled …