Expand Configuration and Management Manual (H06.21+, J06.10+)

Subsystem Control Facility (SCF) Commands
Expand Configuration and Management Manual — 529522-013
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SWAN Concentrator Lines
number of frames was last transmitted. THRESHOLD applies only to lines
attached to the SWAN concentrator.
Line Quality
is the line-quality value computed every 500 frames. This value is not alterable.
Line quality is computed using this formula:
100 * (( TOTAL FRAMES - ERROR FRAMES ) / TOTAL FRAMES)
Line Quality reports a value below 100 only when the result of the formula
is 95 or less; that is, when less than 95 percent of the packets are error-free.
Low line quality generally indicates a Layer 2 problem. For Layer 2
troubleshooting information, see Section 20, Troubleshooting.
No Buffer
is the number of times read buffer space for the driver could not be obtained to
read a frame because statistics were reset using the STATS RESET command.
Err Frms
is the number of times the Layer 2 timer expired when the line was up and not
idle, plus the number of frames received with BCC errors because the
THRESHOLD number of frames was last transmitted.
BCC Errs
is the number of invalid frames received from the CSS driver because the
THRESHOLD number of frames was last transmitted.
Modem Errs
is the number of times the Carrier Detect (CD) or Data Set Ready (DSR) signal
was lost by the communications hardware device for this IOP because
statistics were last reset using the STATS RESET command or because the
line-handler process was started.
Rcv OverRun
is the number of frames received that were longer than the maximum frame
size expected because st
atistics were last reset using the STATS RESET
command or because the line-handler process was started. This problem is
caused by the loss of modem synchronization.
CLIP SPECIFIC
displays error counts on frames received from the modem and reported by the
HDLC protocol running in the CLIP
, because statistics were last reset using the
STATS RESET command or because the line-handler process was started.