BGP Link-State Extensions for Seamless BFD
draft-li-idr-bgp-ls-sbfd-extensions-01

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Last updated 2017-04-24
Replaces draft-zhuang-idr-bgp-ls-sbfd-extensions
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Network Working Group                                              Z. Li
Internet-Draft                                                    Huawei
Intended status: Standards Track                              Sam aldrin
Expires: October 27, 2017                                    Google, Inc
                                                             J. Tantsura
                                                              Individual
                                                               G. Mirsky
                                                               ZTE Corp.
                                                               S. Zhuang
                                                                  Huawei
                                                          April 25, 2017

               BGP Link-State Extensions for Seamless BFD
                 draft-li-idr-bgp-ls-sbfd-extensions-01

Abstract

   [RFC7880] defines a simplified mechanism to use Bidirectional
   Forwarding Detection (BFD) with large portions of negotiation aspects
   eliminated, thus providing benefits such as quick provisioning as
   well as improved control and flexibility to network nodes initiating
   the path monitoring.  The link-state routing protocols (IS-IS, OSPF
   and OSPFv3) have been extended to advertise the Seamless BFD (S-BFD)
   Discriminators.

   This draft defines extensions to the BGP Link-state address-family to
   carry the S-BFD Discriminators information via BGP.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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 http://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

Li, et al.              Expires October 27, 2017                [Page 1]
Internet-Draft         BGP-LS Extensions for S-BFD            April 2017

   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 October 27, 2017.

Copyright Notice

   Copyright (c) 2017 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
   (http://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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Problem and Requirement . . . . . . . . . . . . . . . . . . .   3
   4.  BGP-LS Extensions for S-BFD Discriminators Exchanging . . . .   4
   5.  Operations  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   [RFC7880] defines a simplified mechanism to use Bidirectional
   Forwarding Detection (BFD)[RFC5880] with large portions of
   negotiation aspects eliminated, thus providing benefits such as quick
   provisioning as well as improved control and flexibility to network
   nodes initiating the path monitoring.

   [RFC7883] defines a mean of advertising one or more S-BFD
   Discriminators using the IS-IS Router Capability TLV.  [RFC7884]
   defines a new OSPF Router Information (RI) TLV that allows OSPF
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