Expand Configuration and Management Manual (G06.24+)

Subsystem Control Facility (SCF) Commands
Expand Configuration and Management Manual—523347-008
15-31
Direct-Connect and Satellite-Connect Line-Handler
Processes
Framesize
specifies the maximum size frame that can be sent in the network; smaller frames
may be sent. The Expand subsystem also uses the FRAMESIZE modifier value to
calculate the packet size and determine the size of the frame buffers. If the default
FRAMESIZE modifier value is used, the packet size is 132 words.
Rsize
specifies the time factor of the line for the Expand routing algorithm. RSIZE can be
0 if the time factor is set using some other modifier.
Speed
calculates the time factor of the line for the Expand routing algorithm.
LinePriority
This can be set in the range 1 to 9. The default is 1. The higher the number, the
lower priority to use that line. If lines have equal priority, the relative line speeds
and transmission delays are used to select the next line.
StartUp
specifies that the line will be disabled (OFF) or enabled (ON) after a system load.
Delay
specifies the time interval, in one-hundredth of a second increments, that a data bit
spends on the line during message transmission. The line-handler process uses
the transmission size, the amount of delay before the message can be dispatched,
and the DELAY modifier value to select the most efficient line for data transmission
within a path that consists of multiple-line logical devices. This value should match
the expected transmission delay across the communications facility. In the
example above, it is 0.10 seconds.
DownIfBadQuality
This can be set either ON or OFF. The default is OFF. If set to ON and the
QualityTimer expires, an EMS message is generated and the line is aborted. If set
to OFF and the QualityTimer expires, an EMS message is generated and the line
is not aborted.
QualityThreshold
This can be set in the range 0 to 99. The default is 0. If the line reports quality
lower than this percentage value, a timer is started.
QualityTimer
This can be set in the range of 0 through 12 hours. The default is 0. Specifies the
time interval to wait after the line quality drops below the threshold value specified