MANET Autoconf WG Blog

This draft proposes PDAD-OLSR, a solution for configured address uniqueness maintenance in MANETs running the OLSR protocol.  It utilizes the Passive Duplicate Address Detection (PDAD) concept, which enables nodes to passively detect duplicate addresses in the network (e.g., occurring after network merging) by analyzing received routing protocol messages.  Due to its passive nature, PDAD-OLSR is very efficient in terms of bandwidth consumption.  Moreover, it can prevent the contamination of routing tables with wrong routing information resulting from address conflicts.

A permalink to this I-D is included here:  draft-weniger-autoconf-pdad-olsr-01.txt

Kenichi Mase has published a new version of the framework document: draft-mase-autoconf-framework-02.txt

We consider the unique local address autoconfiguration problem for stand-alone ad hoc networks (MANETs). Specifically, we consider two cases. First, a node without a pre-assigned and valid local address acquires a new local address and becomes a member of a new or existing MANET. Second, two or more MANETs merge. In the first case, a mechanism of IP address generation is needed. We also should have MANET-wide duplicate address detection (MANET-DAD) on newly generated address (tentative address) for suppressing occurrence of duplicate addresses for address generation (pre-service MANET-DAD).

In the second case, duplicate address may occur as the result of a merger of two formerly independent networks. We should have MANET-DAD on addresses in use for resolving duplicate addresses and suppressing routing information contamination due to existence of duplicate addresses (in-service MANET-DAD). To realize pre-service MANET-DAD and in-service MANET-DAD, we define autoconfiguration states that are common for both proactive and reactive routing protocol. Each node exists in one of the autoconfiguration states at any time. A node, that detects duplicate address between other nodes, should advertise the detected duplicate address to all other nodes In the MANET. This is termed “MANET duplicate address advertisement” (MANET-DAA). The specific MANET-DAD and MANET-DAA algorithm is beyond the scope of this document.

Fred Templin has submitted this draft: draft-templin-autoconf-dhcp-00.txt

The abstract is below:

Mobile Ad-hoc Networks (MANETs) comprise MANET routers and their attached devices, and connect to the global Internet via one or more MANET gateways. MANET routers that require global Internet access must have a way to automatically configure globally routable and unique IP addresses/prefixes. This document specifies mechanisms for MANET address autoconfiguration (AUTOCONF) based on the Dynamic Host Configuration Protocol (DHCP). Solutions for both IPv4 and IPv6 are given.