[Bier] I-D Action: draft-ietf-bier-te-arch-11.txt
internet-drafts@ietf.org Tue, 16 November 2021 07:27 UTC
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Subject: [Bier] I-D Action: draft-ietf-bier-te-arch-11.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 Bit Indexed Explicit Replication WG of the IETF. Title : Tree Engineering for Bit Index Explicit Replication (BIER-TE) Authors : Toerless Eckert Gregory Cauchie Michael Menth Filename : draft-ietf-bier-te-arch-11.txt Pages : 60 Date : 2021-11-15 Abstract: This memo describes per-packet stateless strict and loose path steered replication and forwarding for Bit Index Explicit Replication packets (RFC8279). It is called BIER Tree Engineering (BIER-TE) and is intended to be used as the path steering mechanism for Traffic Engineering with BIER. BIER-TE introduces a new semantic for bit positions (BP) that indicate adjacencies, as opposed to (non-TE) BIER in which BPs indicate Bit-Forwarding Egress Routers (BFER). BIER-TE can leverage BIER forwarding engines with little changes. Co-existence of BIER and BIER-TE forwarding in the same domain is possible, for example by using separate BIER sub-domains (SDs). Except for the optional routed adjacencies, BIER-TE does not require a BIER routing underlay, and can therefore operate without depending on an Interior Gateway Routing protocol (IGP). As it operates on the same per-packet stateless forwarding principles, BIER-TE can also be a good fit to support multicast path steering in Segment Routing (SR) networks. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bier-te-arch/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-bier-te-arch-11 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-te-arch-11 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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