Technical Summary
The IS-IS routing protocol (Intermediate System to Intermediate
System, ISO 10589) requires reliable protocols at the link layer for
point-to-point links. As a result, it does not use a three-way
handshake when establishing adjacencies on point-to- point media.
This paper defines a backward-compatible extension to the protocol
that provides for a three-way handshake. It is fully interoperable
with systems that do not support the extension.
Additionally, the extension allows the robust operation of more than
256 point-to-point links on a single router.
Working Group Summary
This is part of a series of seven documents that were originally
published as informational for historic reasons, but are now
being updated to proposed standard status. There is broad
consensus in the WG for this upgrade in status.
Document Quality
This extension has been implemented by multiple router vendors
and widely deployed. This specification is provided to the
Internet community in order to allow interoperable
implementations to be built by other vendors.
Personnel
Chris Hopps and Dave Ward have been jointly shepherding this
series of seven documents. Ross Callon is the responsible AD.
RFC Editor Note
Please replace the existing informational reference to RFC3567 with a
informative reference to draft-ietf-isis-rfc3567bis.
The reference to [rfc3567] in section 5 (security considerations)
should be changed to a reference to draft-ietf-isis-rfc3567bis
(or to whatever RFC this turns into).
Also, please hold publication of this document until
draft-ietf-isis-rfc3567bis is published, so that we can reference
the RFC, rather than the Internet draft. Also note that we expect
approval of draft-ietf-isis-rfc3567bis within a few days of the
approval of this draft.