Source-Specific Routing in Babel
draft-boutier-babel-source-specific-03

Document Type Active Internet-Draft (individual)
Last updated 2017-07-03
Stream (None)
Intended RFC status (None)
Formats plain text xml 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)
Network Working Group                                         M. Boutier
Internet-Draft                                             J. Chroboczek
Updates: 6126bis (if approved)         IRIF, University of Paris-Diderot
Intended status: Standards Track                           July 03, 2017
Expires: January 4, 2018

                    Source-Specific Routing in Babel
                 draft-boutier-babel-source-specific-03

Abstract

   This document describes an extension to the Babel routing protocol to
   support source-specific routing.

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
   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 January 4, 2018.

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

Boutier & Chroboczek     Expires January 4, 2018                [Page 1]
Internet-Draft      Source-Specific Routing in Babel           July 2017

Table of Contents

   1.  TODOs . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction and background . . . . . . . . . . . . . . . . .   2
   3.  Data Structures . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  The Source Table  . . . . . . . . . . . . . . . . . . . .   3
     3.2.  The Route Table . . . . . . . . . . . . . . . . . . . . .   3
     3.3.  The Table of Pending Requests . . . . . . . . . . . . . .   3
   4.  Data Forwarding . . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Protocol Operation  . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Source-specific messages  . . . . . . . . . . . . . . . .   5
     5.2.  Route Acquisition . . . . . . . . . . . . . . . . . . . .   5
     5.3.  Wildcard retractions (update) . . . . . . . . . . . . . .   5
     5.4.  Wildcard requests . . . . . . . . . . . . . . . . . . . .   6
   6.  Compatibility with the base protocol  . . . . . . . . . . . .   8
     6.1.  Loop-avoidance  . . . . . . . . . . . . . . . . . . . . .   8
     6.2.  Starvation and Blackholes . . . . . . . . . . . . . . . .   8
   7.  Protocol Encoding . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Source Prefix sub-TLV . . . . . . . . . . . . . . . . . .   9
     7.2.  Source-specific Update  . . . . . . . . . . . . . . . . .   9
     7.3.  Source-specific (Route) Request . . . . . . . . . . . . .  10
     7.4.  Source-Specific Seqno Request . . . . . . . . . . . . . .  10
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   9.  Security considerations . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  TODOs

   o  Source Prefix sub-TLV type: TBD

   o  check references (Section) for BABEL in 6126bis

   o  define wildcard Requests behaviour

2.  Introduction and background

   Source-specific routing (also known as Source Address Dependant
   Routing, SAD Routing or SADR) is an extension to traditional next-hop
   routing where packets are routed according to both their destination
   and their source address.  This document describes the source-
   specific routing extension to the Babel routing protocol as defined
   in 6126bis [BABEL].

   Background information about source-specific routing is provided in
   [SS-ROUTING].

Boutier & Chroboczek     Expires January 4, 2018                [Page 2]
Internet-Draft      Source-Specific Routing in Babel           July 2017
Show full document text