Dynamic MANET On-demand (AODVv2) Routing
draft-ietf-manet-aodvv2-01
Mobile Ad hoc Networks Working Group C. Perkins
Internet-Draft Futurewei
Intended status: Standards Track S. Ratliff
Expires: January 15, 2014 Cisco
J. Dowdell
Cassidian
July 14, 2013
Dynamic MANET On-demand (AODVv2) Routing
draft-ietf-manet-aodvv2-01
Abstract
The revised Ad Hoc On-demand Distance Vector (AODVv2) routing
protocol is intended for use by mobile routers in wireless, multihop
networks. AODVv2 determines unicast routes among AODVv2 routers
within the network in an on-demand fashion, offering on-demand
convergence in dynamic topologies.
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 15, 2014.
Copyright Notice
Copyright (c) 2013 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
Perkins, et al. Expires January 15, 2014 [Page 1]
Internet-Draft AODVv2 July 2013
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. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Notational Conventions . . . . . . . . . . . . . . . . . . . 7
4. Applicability Statement . . . . . . . . . . . . . . . . . . . 7
5. Data Structures . . . . . . . . . . . . . . . . . . . . . . . 9
5.1. Route Table Entry . . . . . . . . . . . . . . . . . . . . 9
5.2. Bidirectional Connectivity and Blacklists . . . . . . . . 11
5.3. Router Clients and Client Networks . . . . . . . . . . . 11
5.4. AODVv2 Packet Header Fields and Information Elements . . 12
5.5. Sequence Numbers . . . . . . . . . . . . . . . . . . . . 13
5.6. Enabling Alternate Metrics . . . . . . . . . . . . . . . 14
5.7. RREQ Table: Received RREQ Messages . . . . . . . . . . . 16
6. AODVv2 Operations on Route Table Entries . . . . . . . . . . 17
6.1. Evaluating Incoming Routing Information . . . . . . . . . 17
6.2. Applying Route Updates To Route Table Entries . . . . . . 18
6.3. Route Table Entry Timeouts . . . . . . . . . . . . . . . 19
7. Routing Messages RREQ and RREP (RteMsgs) . . . . . . . . . . 20
7.1. Route Discovery Retries and Buffering . . . . . . . . . . 20
7.2. RteMsg Structure . . . . . . . . . . . . . . . . . . . . 21
7.3. RREQ Generation . . . . . . . . . . . . . . . . . . . . . 23
7.4. RREP Generation . . . . . . . . . . . . . . . . . . . . . 24
7.5. Handling a Received RteMsg . . . . . . . . . . . . . . . 25
7.5.1. Additional Handling for Incoming RREQ . . . . . . . . 26
7.5.2. Additional Handling for Incoming RREP . . . . . . . . 27
7.6. Suppressing Redundant RREQ messages . . . . . . . . . . . 27
8. Route Maintenance and RERR Messages . . . . . . . . . . . . . 27
8.1. Maintaining Route Lifetimes During Packet Forwarding . . 28
8.2. Active Next-hop Router
Adjacency Monitoring . . . . . . . . . . . . . . . . . . 28
8.3. RERR Generation . . . . . . . . . . . . . . . . . . . . . 28
8.3.1. Case 1: Undeliverable Packet . . . . . . . . . . . . 29
8.3.2. Case 2: Broken Link . . . . . . . . . . . . . . . . . 30
8.4. Receiving and Handling RERR Messages . . . . . . . . . . 31
Show full document text