This object denotes the maximum consecutive
unacknowledged I PDU frames that this LLC may
send to its remote LLC partner. This count is
referred to as 'k' in the IEEE 802.2
specification [5].
At connection setup, the remote LLC may send,
using an XID frame, the maximum number of
unacknowledged I PDUs which it is prepared to
receive. If so, an implementation may choose to
override the administered maximum number of
unacknowledged PDUs with the dynamically learned
value and should reflect that in this object.