BGP Link-State extensions for BIER
draft-ietf-bier-bgp-ls-bier-ext-11
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
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|---|---|---|---|
| Authors | Ran Chen , Zheng Zhang , Vengada Prasad Govindan , IJsbrand Wijnands | ||
| Last updated | 2022-02-04 (Latest revision 2021-08-03) | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Formats | |||
| Additional resources | Mailing list discussion | ||
| Stream | WG state | In WG Last Call | |
| Document shepherd | Gyan Mishra | ||
| Shepherd write-up | Show Last changed 2020-11-03 | ||
| IESG | IESG state | Expired | |
| Consensus boilerplate | Unknown | ||
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | Gyan Mishra <hayabusagsm@gmail.com> |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
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.
Authors
Ran Chen
Zheng Zhang
Vengada Prasad Govindan
IJsbrand Wijnands
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)