In Avionics Full Duplex Switched Ethernet (AFDX), the AFDX frames are not routed by the switches via the destination address, but via a 16-bitVirtualLink Identifier (VLID), which follows the 32-bit ConstantFielddata field and forms the destination address with it. Virtual Links (VL) represent a unidirectionalconnection that can be established over other transmission media. The VLIDs determine the path defined in the switch.
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|Englisch:||virtual link - VL|