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RFC 5614: Mobile Ad Hoc Network (MANET) Extension of OSPF Using Connected Dominating Set (CDS) Flooding

Still current, but amended. Parts of this document are changed or extended by RFC 7038, RFC 9454. Read both.

In plain English — editorial summary, not part of the RFC

This document specifies an extension of OSPFv3 to support mobile ad hoc networks (MANETs). The extension, called OSPF-MDR, is designed as a new OSPF interface type for MANETs. OSPF-MDR is based on the selection of a subset of MANET routers, consisting of MANET Designated Routers (MDRs) and Backup MDRs. The MDRs form a connected dominating set (CDS), and the MDRs and Backup MDRs together form a biconnected CDS for robustness. This CDS is exploited in two ways. First, to reduce flooding overhead, an optimized flooding procedure is used in which only (Backup) MDRs flood new link state advertisements (LSAs) back out the receiving interface; reliable flooding is ensured by retransmitting LSAs along adjacencies. Second, adjacencies are formed only between (Backup) MDRs and a subset of their neighbors, allowing for much better scaling in dense networks. The CDS is constructed using 2-hop neighbor information provided in a Hello protocol extension. The Hello protocol is further optimized by allowing differential Hellos that report only changes in neighbor states. Options are specified for originating router-LSAs that provide full or partial topology information, allowing overhead to be reduced by advertising less topology information. This memo defines an Experimental Protocol for the Internet community.

Document record

Document ID
RFC5614
Published
August 2009
Authors
R. Ogier; P. Spagnolo
Status
EXPERIMENTAL
Stream
IETF
Area
rtg
Pages
71
Also known as
—
Updated by:
RFC 7038, RFC 9454

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Referenced by

2 later RFCs formally update or obsolete part of this document.

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canonical URL: /rfc/5614-mobile-ad-hoc-network-manet-extension-of-ospf-using-connected-dominating-set-cds