What’s the difference among IS, ES and DIS?

Created Apr 06, 2016 00:05:06Latest reply Apr 06, 2016 16:01:51 927 1 0 0

What’s the difference among IS, ES and DIS?

  • x
  • convention:

Ravger     Created Apr 06, 2016 16:01:51 Helpful(0) Helpful(0)

IS (Intermediate System): Network nodes with packet forwarding capability, similar to the IP router.
ES (End System): Network nodes without routing capability or data packet forwarding capability, similar to the IP host.
DIS (Designated Intermediate System): In ISIS broadcast network type, it need to elect a designated intermediate system, flooding LSDB to other routers periodically. The function is similar to the DR (Designated Router) in OSPF. There is a concept of backup BDR(Backup Designated Router) In OSPF, which doesn't exist in ISIS
  • x
  • convention:

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