[Bier] I-D Action: draft-ietf-bier-bgp-ls-bier-ext-14.txt

internet-drafts@ietf.org Tue, 07 March 2023 06:09 UTC

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Subject: [Bier] I-D Action: draft-ietf-bier-bgp-ls-bier-ext-14.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This Internet-Draft is a work item of the Bit Indexed Explicit Replication WG of the IETF.

        Title           : BGP Link-State extensions for BIER
        Authors         : Ran Chen
                          Zhaohui Zhang
                          Vengada Prasad Govindan
                          IJsbrand Wijnands
  Filename        : draft-ietf-bier-bgp-ls-bier-ext-14.txt
  Pages           : 13
  Date            : 2023-03-06

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER also does not require any explicit tree-building
   protocol for its operation.  A multicast data packet enters a BIER
   domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the
   BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs).
   The BFIR router adds a BIER header to the packet.  The BIER header
   contains a bitstring in which each bit represents exactly one BFER to
   forward the packet to.  The set of BFERs to which the multicast
   packet needs to be forwarded is expressed by setting the bits that
   correspond to those routers in the BIER header.

   BGP Link-State (BGP-LS) enables the collection of various topology
   informations from the network, and the topology informations are used
   by the controller to calculate the fowarding tables and then
   propagate them onto the BFRs(instead of having each node to calculate
   on its own) and that can be for both inter-as and intra-as
   situations.

   This document specifies extensions to the BGP Link-state address-
   family in order to advertise the BIER informations.


The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-bgp-ls-bier-ext/

There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-bier-bgp-ls-bier-ext-14

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-bier-bgp-ls-bier-ext-14


Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts

[Bier] I-D Action: draft-ietf-bier-bgp-ls-bier-ex… internet-drafts