IBM SC30-3865-04 - Manual (Page 178)

Table 21. Configuration Parameter List - Port default LLC Characteristics (continued)
Parameter Information
Parameter
Receive acknowledgment timer (T2)
Valid Values
1 to 254 half-seconds
Default Value
1 half-second
Description
This parameter specifies the LLC receiver acknowledgment timer (T2) for all link
stations on this port.
The T2 parameter may be used with the N3 counter to reduce acknowledgment traffic.
A link station uses T2 to delay the sending of an acknowledgment for a received
I-format LPDU. T2 is started when an I-format LPDU is received, and reset when an
acknowledgment is sent in an I-format or S-format LPDU. If T2 expires, the link station
must send an acknowledgment as soon as possible. The value of T2 must be less than
that of T1, to ensure that the remote link station will receive the delayed
acknowledgment before its T1 expires.
Parameter
Acknowledgments needed to increment working window
Valid Values
0 to 127
Default Value
1
Description
When the working window (Ww) is not equal to the Maximum Transmit Window Size
(Tw), this parameter is the number of transmitted I-format LPDUs that must be
acknowledged before the working window can be incremented (by 1). When congestion
is detected, by the loss of I-format LPDUs, Ww is set to 1.
Table 22. Configuration Parameter List - HPR Override Defaults
Parameter Information
Parameter
Inactivity timer override for HPR (HPR Ti)
Valid Values
1 to 254 seconds
Default Value
2 seconds
Description
This parameter specifies the LLC inactivity timer (HPR Ti) that is to be used for all link
stations on this port supporting HPR when the HPR supported parameter is enabled on
this port. This default overrides the value of the default LLC inactivity timer (Ti)
parameter specified on the default LLC characteristics parameter.
APPN Configuration Commands
148 MRS V3.2 Protocol Config Ref Vol 2