Internet-Draft draft-ietf-lsr-ospf-ls-link-infinity-08.txt is now available.
It is a work item of the Link State Routing (LSR) WG of the IETF.
Title: Advertising Unreachable Links in OSPF
Authors: Liyan Gong
Weiqiang Cheng
Changwang Lin
Acee Lindem
Ran Chen
Name: draft-ietf-lsr-ospf-ls-link-infinity-08.txt
Pages: 17
Dates: 2025-09-17
Abstract:
In certain scenarios, it is necessary to advertise OSPF links that
are not applicable to the default SPF calculation for other purposes.
In order to advertise these links and not use them in the base SPF
calculation, the metric LSLinkInfinity (0xffff) is used to specify
that the link is unreachable.
Stub Router Advertisement (RFC 6987) defines MaxLinkMetric (0xffff)
to indicate a router-LSA link should not be used for transit traffic.
When an OSPFv2 router supports the Unreachable Link support
capability defined in this document, OSPFv2 Stub Router links are
advertised as MaxReachableLinkMetric (0xfffe) rather than
MaxLinkMetric (0xffff). This document updates RFC 6987 and RFC 8770.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-ospf-ls-link-infinity/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-lsr-ospf-ls-link-infinity-08.html
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-lsr-ospf-ls-link-infinity-08
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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