BIER BFD
draft-hu-bier-bfd-03

Document Type Active Internet-Draft (individual)
Last updated 2019-02-28
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
BIER WG                                                       Quan Xiong
Internet-Draft                                               Greg Mirsky
Intended status: Standards Track                              Fangwei Hu
Expires: September 2, 2019                               ZTE Corporation
                                                               Chang Liu
                                                            China Unicom
                                                           March 1, 2019

                                BIER BFD
                        draft-hu-bier-bfd-03.txt

Abstract

   Point to multipoint (P2MP) BFD is designed to verify multipoint
   connectivity.  This document specifies the application of P2MP BFD in
   BIER network.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 2, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Quan Xiong, et al.      Expires September 2, 2019               [Page 1]
Internet-Draft                  BIER BFD                      March 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   3.  BIER BFD Encapsulation  . . . . . . . . . . . . . . . . . . .   3
   4.  Bootstrapping BIER BFD  . . . . . . . . . . . . . . . . . . .   3
     4.1.  BIER OAM Ping Bootstrap . . . . . . . . . . . . . . . . .   3
     4.2.  IGP protocol Bootstrap  . . . . . . . . . . . . . . . . .   4
       4.2.1.  IS-IS extension for BIER BFD  . . . . . . . . . . . .   4
       4.2.2.  OSPF extension for BIER BFD . . . . . . . . . . . . .   5
   5.  Discriminators and Packet Demultiplexing  . . . . . . . . . .   5
   6.  Active Tail in BIER BFD . . . . . . . . . . . . . . . . . . .   5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     10.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   Bit Index Explicit Replication (BIER) [RFC8279] provides optimal
   forwarding of multicast data packets through a multicast domain.  It
   does so without requiring any explicit tree-building protocol and
   without requiring intermediate nodes to maintain any per-flow state.
   BIER resilience use cases are described in
   [I-D.xiong-bier-resilience] including End-to-End 1+1 and 1:1
   Protection and the failure detection mechanisms MAY use P2MP BFD and
   P2MP active tail detection method respectively.

   [I-D.ietf-bfd-multipoint] defines a method of using Bidirectional
   Forwarding Detection(BFD) to monitor and detect unicast failures
   between the sender (head) and one or more receivers (tails) in
   multipoint or multicast networks.
   [I-D.ietf-bfd-multipoint-active-tail] describes active tail
   extensions to the BFD protocol for multipoint networks.

   This document describes the procedures for using such mode of BFD
   protocol to verify multipoint or multicast connectivity between a
   multipoint sender (the "head", Bit-Forwarding Ingress Routers(BFIRs))
   and a set of one or more multipoint receivers (the"tails", Bit-
   Forwarding Egress Routers(BFERs)).  The BIER BFD only supports the

Show full document text