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ages that are used by the node.

11.Giuseppe De Marco, Makoto Ikeda, Tao Yang and Leonard Barolli , “Experimental Performance Evaluation of a Pro-Active Ad-hoc Routing Protocol in Out- and Indoor Scenarios”.
C perkins, E belding Royer, S Das.

Chapter 3 OLSR - Core Functionality

The Optimized Link State Routing Protocol (OLSR) is developed for mobile ad hoc networks. The protocol is documented in the experimental Request For Comment (RFC) 3626. OLSR is table-driven and pro-active and utilizes an optimization called Multipoint Relaying for control traffic flooding.

RFC3626 modularizes OLSR into core functionality, which is always required for the protocol to operate, and a set of auxiliary functions. The chapter presents the main functionality of OLSR. The core functionality specifies a protocol able to provide routing in a stand-alone MANET. Each auxiliary function provides additional functionalities, which may be applicable in specific scenarios, e.g., in case a node is providing connectivity between the MANET and another routing domain. All auxiliary functions are compatible, to the extent where any auxiliary function may be implemented with the core. Furthermore, the protocol is said to allow heterogeneous nodes, i.e., nodes which implement different subsets of the auxiliary functions, to coexist in the network.

It is important to understand that OLSR does not route traffic. It is not in any way responsible for the actual process of routing traffic. OLSR could rather be described as a route maintenance protocol in that it is responsible for maintaining the routing table used for routing packages, but such protocols are usually referred to as routing protocols.

26. Hipercom Project: T. Clause and, P.Jacquet.”Optimized Link State Routing Protocol (OLSR).

3.1 Node addressing:

OLSR uses an IP address as the unique identifier of nodes in the network. The design of the OLSR in made to be able to operate on the nodes using multiple communication interfaces, each and every node have to choose one IP address that will be its main address.

One can use OLSR on both with IP version 4(IPv4) and version 6(IPv6). The reason why IPv6 differs from IPv4 is the size of the IP addresses that are transmitted in control messages, the address to use as destination for control traffic and the minimum size of messages.

3.2 Information repositories:

As derived from the classical link-state algorithm, OLSR maintains state by keeping a variety of databases of information. These information repositories are updated upon processing received control messages and the information stored is used when generating such messages. Here follows a brief look at the different information repositories used in core OLSR.
Multiple Interface Association Information Base

This data set contains information about nodes using more than one communication interface. All interface addresses of such nodes are stored here.

23. S. Deering and R. Hinden. RFC2460, “Internet Protocol, Version 6 (IPv6) Specification”, standards track edition, December.
University of Southern California Information Sciences Institute. RFC791,” Internet Protocol”,standards track edition, September.
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