220.127.116.11.3. Length/Type Field Processing
This two-byte header field represents either the length of the payload or the type of MAC frame. When the value of this field is equal to or greater than 1536 (0x600) it indicates a type field. Otherwise, this field provides the length of the payload data that ranges from 0–1500 bytes. The TX MAC does not modify this field before forwarding it to the network; it uses this field to generate TX Statistics.
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