Cabletron Systems SmartSwitch 6000 User Manual page 153

T2
Ti
N3
Tw
N2
Priority
Configuring SNA
If expires and acknowledgments/responses are still outstanding, the link station
T1
will send one of the following, then restart
A Supervisory LPDU with the P bit set to B'1,' to solicit remote link station
status.
Any Unnumbered LPDUs that were not responded to the first time they were
sent.
If acknowledgments/responses are still outstanding after
link station will declare the link inoperative.
The value specified for
layer (e.g., queuing).
is the Receiver Acknowledgment Timer, used by the link station to delay sending an
acknowledgment of a received Information LPDU. The timer is started when the
LPDU is received and reset when the acknowledgment is sent. If the timer expires
before the acknowledgment is sent, it must be sent as soon as possible.
is the Inactivity Timer, used by the link station to detect an inoperative condition in
either the remote link station or the transmission medium. The timer will be started if
has been reset (for one of the reasons listed under "
T1
LPDUs have been 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
an LPDU with the P bit set to
proceeds as described under "
is the number of Information LPDUs that will be received before sending an acknowl-
edgment. This parameter is used in conjunction with
traffic. A counter is initialized to
sequential Information LPDU is received. When the counter reaches
edgment is sent.
is reset whenever an Information or Supervisory acknowledgment LPDU is sent by
N3
the local station.
is the maximum number of sequentially numbered Information LPDUs that the link
station can have outstanding.
is the maximum number of times that an LPDU (including Information LPDUs resent
after a checkpoint operation) will be sent following expiration of
prioritizes intra-nodal traffic; the higher the number, the higher the priority. (This pri-
ority has no effect on traffic exiting a node.)
A priority is also configured in Node Defaults, as well as for each logical port, LLC2
host, LLC2 Interface, IP interface, IPX interface, SVC subscriber, and PVC con-
:
T1
should allow for any delays introduced by the MAC sub-
T1
to solicit the remote station's status. Recovery then
B'1'
" earlier.
T1
, and will be decremented by one each time a valid
N3
tries (see that entry), the
N2
" earlier), and additional
T1
expires, the station must send
Ti
to allow stations to reduce
T2
an acknowl-
0
.
T1
8-11