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length field (LTH)

The Length Field (LTH) is a data field in the Ethernet frame according to IEEE 802.3.

It is a 2 byte long field that indicates the number of bytes that are in the following data field. In Ethernet frames, this data field is used as a type field that specifies the network protocol contained in the data field of the relevant data packet. Using this field as a length field provides an additional way to detect transmission errors.

Informations:
Englisch: length field - LTH
Updated at: 18.03.2018
#Words: 75
Links: data, field, Ethernet frame, IEEE 802.3, byte (B)
Translations: DE
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