Cabletron Systems Netlink FRX8000, Руководство пользователя

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11-18 FRX8000 3. 0 User G uide, Rev 02
sent by the remote link station, and there are no outstanding acknowledgments or
responses from the local link station.
If the local station does not receive an LPDU before
Ti
expires, the station must send
an LPDU with the P bit set to
B‘1’
to solicit the remote station’s status. Recovery then
proceeds as described under “
Reply Timer - T1
.”
LPDUs before Ack - N3
is the number of Information LPDUs that will be received before sending an acknowl-
edgment. This parameter is used in conjunction with
T2
to allow stations to reduce
traffic. A counter is initialized to
N3
, and will be decremented by one each time a valid
sequential Information LPDU is received. When the counter reaches zero an acknowl-
edgment is sent.
N3
is reset whenever an Information or Supervisory acknowledgment LPDU is sent by
the local station.
Outstanding LPDUs - Tw
is the maximum number of sequentially numbered Information LPDUs that the link
station can have outstanding.
LPDUs if T1 Expires - N2
is the maximum number of times that an LPDU (including Information LPDUs resent
after a checkpoint operation) will be sent following expiration of
T1
.
Priority
prioritizes this PU’s traffic among all traffic on the port; the higher the number, the
higher the priority. Priorities are also configured on LLC2 hosts and interfaces.
Bandwidth Alloc Group
assigns the PU to one of sixteen groups whose parameters regulate bandwidth usage
on a frame relay link. See "
Configuring Bandwidth Allocation Groups " on page 8-2.