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