EtherType
EtherType is a two-octet field in an Ethernet frame. It is used to indicate which protocol is encapsulated in the payload of the frame and is used at the receiving end by the data link layer to determine how the payload is processed. The same field is also used to indicate the size of some Ethernet frames.
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EtherType est un champ d'une trame Ethernet indiquant quel est le protocole de niveau supérieur utilisé dans le champ "donnée" de cette trame.
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