RFC 3626: Optimized Link State Routing Protocol (OLSR)
In plain English — editorial summary, not part of the RFC
This document describes the Optimized Link State Routing (OLSR) protocol for mobile ad hoc networks. The protocol is an optimization of the classical link state algorithm tailored to the requirements of a mobile wireless LAN. The key concept used in the protocol is that of multipoint relays (MPRs). MPRs are selected nodes which forward broadcast messages during the flooding process. This technique substantially reduces the message overhead as compared to a classical flooding mechanism, where every node retransmits each message when it receives the first copy of the message. In OLSR, link state information is generated only by nodes elected as MPRs. Thus, a second optimization is achieved by minimizing the number of control messages flooded in the network. As a third optimization, an MPR node may chose to report only links between itself and its MPR selectors. Hence, as contrary to the classic link state algorithm, partial link state information is distributed in the network. This information is then used for route calculation. OLSR provides optimal routes (in terms of number of hops). The protocol is particularly suitable for large and dense networks as the technique of MPRs works well in this context.
Document record
- Document ID
- RFC3626
- Published
- October 2003
- Authors
- T. Clausen; P. Jacquet
- Status
- EXPERIMENTAL
- Stream
- IETF
- Area
- rtg
- Pages
- 75
- Also known as
- —
Topics
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 6621Simplified Multicast ForwardingCurrent
May 2012
- RFC 5449OSPF Multipoint Relay (MPR) Extension for Ad Hoc NetworksCurrent
February 2009
- RFC 7185Link Metrics for the Mobile Ad Hoc Network (MANET) Routing Protocol OLSRv2 - RationaleCurrent
April 2014
- RFC 7779Directional Airtime Metric Based on Packet Sequence Numbers for Optimized Link State Routing Version 2 (OLSRv2)Current
April 2016
- RFC 3623Graceful OSPF RestartCurrent
November 2003
- RFC 3630Traffic Engineering (TE) Extensions to OSPF Version 2Updated
October 2003
- RFC 3618Multicast Source Discovery Protocol (MSDP)Current
October 2003
- RFC 3612Applicability Statement for Restart Mechanisms for the Label Distribution Protocol (LDP)Current
September 2003
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