NS3000/iX Operations and Maintenance Reference Manual (36922-90039)
Appendix A 179
LINKCONTROL Command
NS 3000/iX LAP-B Link Statistics
DCD Carrier Losses. The DCD Carrier Losses field displays the
number of times the PSI detected a temporary loss of the Data Carrier
Detect (DCD) signal on the cable. On most lines, this will remain at a
value of zero, although some modems will periodically drop signals for
very short intervals.
CRC Errors. The CRC Errors field displays the number of frames that
were received with a bad Cyclic Redundancy Check (CRC) checksum. A
large number (greater than 1% of the total number of packets) indicates
that a problem may exist in the connection between the PSI and the
modem, or between the two modems.
Statistics Resets. The Statistics Resets field displays the number of
times that the statistics buffer (which contains the values for all of the
aforementioned fields) was reset. This value is reset each time the link
is restarted.
RESET Parameter Fields
The RESET parameter for LAP-B links resets all of the accumulated
statistics for the links. This command also displays all of the
LINKSTATE, CONFIGURATION, and STATISTICS parameter fields.
Refer to the STATISTICS parameter for a description of the displayed
fields.
ALL Parameter Fields
The ALL parameter for LAP-B links displays all of the LINKSTATE,
CONFIGURATION, and STATISTICS parameter fields. Figure A-4 is an
example of the ALL parameter output:
Figure A-4 LAP-B ALL Parameter Output
Linkname: LAPB20 Linktype: LAPB Linkstate: CONNECTED LEVEL 2
Physical Path 24
Phone Number 9D1D40898765432
Modulo Count 8 Cable Type RS232
Local Mode HP-HP Buffer Size 1024 Bytes
LAPB Parm K 7 Connect Timeout 60 sec
LAPB Parm T1 300 hsec Local Timeout 900 sec
LAPB Parm N2 20 Transmission Speed 64000 bps
Connection Duration 23:25:01 Tracing OFF
Data Bytes Sent 62650 Data Bytes Received 62300
Overhead Bytes Sent 8592 Overhead Bytes Received 8550
Total Frames Sent 1430 Total Frames Received 1425
Data Frames Sent 1253 Data Frames Received 1246
Aborted Frames Sent 62650 Aborted Received 0
DSR Losses 0 Oversized Frames Received 0
CTS Carrier Losses 0 Receive Overruns 0
DED Carrier Losses 0 CRC Errors 0
Statistics Resets 0