Control - Information Transfer (LLC Type 2)

a

If LLC is used connection-oriented (COLS - connection-oriented link services), the control field is 2 bytes in length (I-format LLC).

The first bit (value: 0) indicates information transfer.

The P/F bit (poll/final) indicates the flow direction.

The seven N(s) bits contain the transmitter send sequence number.

The seven N(r) bits contain the transmitter receive sequence number.