5 Replies Latest reply: Sep 24, 2019 6:14 PM by C1SC0M - CCIE #49413 CCNP,CWNA,Net+ RSS

    is IS-IS a layer 2 or Layer 3 protocol?

    kinshuk kaushal

      As IS-IS uses NSAP addresses which is for OSI layer connectivity.

      Is it a layer 2 or layer 3 protocol?

       

       

      Please suggest.