[trill] I-D Action: draft-ietf-trill-resilient-trees-05.txt

internet-drafts@ietf.org Wed, 22 June 2016 09:44 UTC

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Subject: [trill] I-D Action: draft-ietf-trill-resilient-trees-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Transparent Interconnection of Lots of Links of the IETF.

        Title           : TRILL Resilient Distribution Trees
        Authors         : Mingui Zhang
                          Tissa Senevirathne
                          Janardhanan Pathangi
                          Ayan Banerjee
                          Anoop Ghanwani
	Filename        : draft-ietf-trill-resilient-trees-05.txt
	Pages           : 19
	Date            : 2016-06-22

   TRILL protocol provides multicast data forwarding based on IS-IS link
   state routing. Distribution trees are computed based on the link
   state information through Shortest Path First calculation. When a
   link on the distribution tree fails, a campus-wide reconvergence of
   this distribution tree will take place, which can be time consuming
   and may cause considerable disruption to the ongoing multicast

   This document specifies how to build backup distribution trees to
   protect links on the primary distribution tree. Since the backup
   distribution tree is built up ahead of the link failure, when a link
   on the primary distribution tree fails, the pre-installed backup
   forwarding table will be utilized to deliver multicast packets
   without waiting for the campus-wide reconvergence. This minimizes the
   service disruption. This document updates RFC 6325.

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