Mobility

Router and Link Admittance Control in the Optimized Link State Routing Protocol Version 2 (OLSRv2)

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Executive Summary

This paper presents security mechanisms for router and link admittance control in OLSRv2. Digitally signing OLSRv2 control messages allows recipient routers to - individually - choose to admit or exclude the originating router for when populating link-state databases, calculating MPR sets etc. By additionally embedding signatures for each advertised link, recipient routers can also control admittance of each advertised link in the message, rendering an OLSRv2 network resilient to both identity-spoofing and link-spoofing attacks. The flip-side of the coin when using such a link-admittance mechanism is that the number of signatures to include in each OLSRv2 control message is a function of the number of links advertised.

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