Mobility

Optimal Design of Virtual Links in AFDX Networks

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Executive Summary

The Avionics Full Duplex Switched Ethernet (AFDX) backbone constitutes one of the major technological breakthroughs in modern avionic architectures. This network is based on routing Ethernet frames through isolated data tunnels referred to as Virtual Links (VL). VLs can be thought of as multicast trees, each serving for data transmission between one and only one end of the network to several others. Multiple VLs are deployed for exchanging data between avionic systems with a reserved amount of bandwidth. In this paper, the authors propose different methods to define VL characteristics and to route VLs in the network while minimizing the maximum utilization rate of the links.

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