BGP Extensions for SRv6 SIDs Allocation
draft-chen-idr-bgp-srv6-sid-allocation-00

Document Type Active Internet-Draft (individual)
Last updated 2019-03-08
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)
IDR Working Group                                                H. Chen
Internet-Draft                                                     Z. Li
Intended status: Standards Track                               S. Zhuang
Expires: September 9, 2019                                        Huawei
                                                           March 8, 2019

                BGP Extensions for SRv6 SIDs Allocation
               draft-chen-idr-bgp-srv6-sid-allocation-00

Abstract

   This document describes extensions to the BGP-LS for IDs allocation.
   The IDs are SIDs for segment routing for IPv6 (SRv6).  They are
   distributed to their domains if needed.

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 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 9, 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

Chen, et al.            Expires September 9, 2019               [Page 1]
Internet-Draft              BGP for SRv6 SIDs                 March 2019

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Protocol Extensions . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Node NLRI for IDs Allocation  . . . . . . . . . . . . . .   3
     3.2.  Link NLRI for IDs Allocation  . . . . . . . . . . . . . .   6
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   In a network with a central controller, the controller has the link
   state information of the network, including traffic engineering
   information.  In addition, the controller allocates and manages the
   resources of the network in general.  It is natural and beneficial
   for the controller to allocate and manage IDs as a kind of network
   resources.

   This document proposes extensions to the BGP-LS as a controller for
   allocating Segment Identifiers (SIDs) for segment routing for IPv6
   (SRv6).  If needed, some SIDs will be distributed into their network
   domains.

2.  Terminology

   The following terminology is used in this document.

   SR:  Segment Routing.

   SRv6:  SR for IPv6

   SID:  Segment Identifier.

   IID:  Indirection Identifier.

   SR-Path:  Segment Routing Path.

Chen, et al.            Expires September 9, 2019               [Page 2]
Internet-Draft              BGP for SRv6 SIDs                 March 2019

   SR-Tunnel:  Segment Routing Tunnel.

   RR:  Route Reflector.

   MPP:  MPLS Path Programming.

   NAI:  Node or Adjacency Identifier.

   GTID:  Global Tunnel Identifier.  It is used to identify a tunnel in
      a network.

   TED:  Traffic Engineering Database.

3.  Protocol Extensions

   This section defines a new Protocol-ID, called IDs-Allocation (IDA),
   in the Protocol-ID field of Link State NLRI.  The use of the new
   Protocol-ID allows separation and differentiation between the NLRIs
Show full document text