IS-IS Topology-Transparent Zone

Document Type Expired Internet-Draft (individual)
Last updated 2018-09-06 (latest revision 2018-03-05)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document presents a topology-transparent zone in a domain. A zone comprises a group of routers and a number of circuits connecting them. Any router outside of the zone is not aware of the zone. The information about the circuits and routers inside the zone is not distributed to any router outside of the zone. Any link state change such as a circuit down inside the zone is not seen by any router outside of the zone.


Huaimo Chen (
Richard Li (
Alvaro Retana (
Ning So (
Vic Liu (
Mehmet Toy (
Lei Liu (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)