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Being a proactive protocol, OLSR uses power and network resources in order to propagate data about possibly unused routes. While this is not a problem for wired access points, and laptops, it makes OLSR unsuitable for sensor networks that try to sleep most of the time.
For small scale wired access points with low [[Central processing unit|CPU]] power, the open source [https://web.archive.org/web/20150408143413/http://www.olsr.org/ OLSRd] project showed that large scale mesh networks can run with OLSRd on thousands of nodes with very little CPU power on {{val|200|ul=MHz}} embedded devices. {{Citation needed|reason=We need a source for "large scale mesh networks ..." and "very little CPU power" |date=June 2019}}
Being a link-state protocol, OLSR requires a reasonably large amount of [[Bandwidth (computing)|bandwidth]] and CPU power to compute optimal paths in the network. In the typical networks where OLSR is used (which rarely exceed a few hundreds of nodes), this does not appear to be a problem.
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== Implementations ==
* [https://web.archive.org/web/20150408143413/http://www.olsr.org/ OLSR.ORG] – Downloadable code for OLSR on GNU/Linux, Windows, Mac OS X, FreeBSD, NetBSD and [[OpenBSD]] systems. Features a great deal of documentation, including an informative survey of related work.
* [http://cs.itd.nrl.navy.mil/work/olsr/index.php NRL-OLSR] – Open source code of NRL-OLSR. Works on Windows, MacOS, Linux, and various embedded PDA systems such as Arm/Zaurus and PocketPC as well as simulation environments [[ns2]] and OPNET., http://cs.itd.nrl.navy.mil/focus/
* [http://sourceforge.net/projects/wmolsr/ SOURCEFORGE.NET-OLSR] – Created by MOVIQUITY and based on studies within the project Workpad, it offers a code in C# to deploy a MANET (Ad Hoc, Meshnet) with protocol OLSR. Developed for WM 6, Win XP and can be adapted to other platforms using .Net Framework and Compact. http://sourceforge.net/projects/wmolsr/
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== External links ==
* [https://web.archive.org/web/20130112003204/http://www.ietf.org/ IETF Home Page] The Internet Engineering Task Force standards body
* [http://olsr.funkfeuer.at olsr.funkfeuer.at] currently advancing the olsr.org implementation to improve scalability
* [https://web.archive.org/web/20040912075427/http://hipercom.inria.fr/olsr/ Optimized Link State Routing], which includes this [https://web.archive.org/web/20051013011753/http://hipercom.inria.fr/olsr/mpr-flooding.html Flash Demo].
* [http://pyramid.metrix.net/ Pyramid Linux] – an embedded distro for [http://metrix.net/ embedded x86 boards] with OLSR, web interface, etc. Primarily used in Community Networks.
* [http://cs.itd.nrl.navy.mil/focus/ NRL's Networks and Communication Systems Branch] – includes project information and open source networking tools and software developed by the U.S. Naval Research Lab.
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