AFDX allows for bandwidth reservation guarantees by means of virtual links and permits the classification of virtual links in one of two priority levels: high or low. AFDX compliant switches offer output buffers at each switch output port and the stored frames leave each output port according to a fixed priority FIFO policy. Overflow of these buffers must be avoided at all cost to prevent data loss. Although the AFDX standard determines the minimum buffer size dedicated to an output port (we will refer to the output port as a node), the actual length of each priority buffer (high and low), is a designer decision.
Dimensioning buffers for AFDX networks with multiple priorities virtual links
2015 IEEE/AIAA 34th Digital Avionics Systems Conference (DASC) ; 10A5-1-10A5-12
2015-09-01
2509159 byte
Conference paper
Electronic Resource
English
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