Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
Chapter 6 Troubleshooting the Cisco PGW 2200 Softswitch Platform
Tracing
• xyz—Optional parameter that names the ASCII log file to which the output of this command is
written. The name that you specify for this parameter is prefixed to the actual name of the file, which
includes the sig_path name, date, and time. If you do not provide a log filename, a default name
consisting of the sig_path name, date, and time is created. The extension of these log files is .prt.
The files are located in the $BASEDIR/var/trace directory.
For example, the
prt-call:sip_svc1:cid=”ccdd33ee-423fdedd-55438954-1@172.22.119.215” MML
command prints call data for a particular call on a SIP signaling service that is called sip_svc1.
Step 4 Change directories to access the log file by entering the cd /opt/CiscoMGC/var/trace command.
Step 5 Use a text file viewer, such as vi, to view the contents of the log file.
Performing an Abnormal Call Termination Trace
You can print the global variable information from the state machine, and external event information for
a call, to a file by issuing the sta-abn-trc MML command. To print this information, complete the
following steps:
Step 1 Log in to the active Cisco PGW 2200 Softswitch, start an MML session, and enter the
sta-abn-trc: sig_path |all[,log= xyz ] [,prd= n ],confirm command:
Where:
• sig_path—Corresponding MML name for any of the following component types:
– Signaling path of in-band TDM up to MUX and then time switched to TDM media and sent to
Cisco PGW 2200 Softswitch.
– Signaling path of in-band TDM signaling up to CU and then encapsulated and sent over IP to
the Cisco PGW 2200 Softswitch.
– Signaling path of in-band TDM signaling up to NAS and then converted to NI2 and sent to the
Cisco PGW 2200 Softswitch over IP (that is, FE box<-sig/tdm->NAS<-NI2/IP->Cisco PGW
2200 Softswitch).
– Signaling path or routeset that is associated with SS7 DPC.
– Signaling path for EISUP.
Note This command allows wildcards for the sig_path parameter.
• all—Indicates that the start trace command applies to the whole Cisco PGW 2200 Softswitch, in
which case only one trace file is generated.
• xyz—Name of an ASCII log file to which the output of this command is written. The name that you
specify for this parameter prefixes the actual name of the file, which includes the sig_path name,
date, and time. If you do not specify a log filename, the command creates a default name consisting
of the sig_path name, date. The extension of these log files is .prt. The files are located in the
$BASEDIR/var/trace directory.
• n—Period, in seconds, for which this trace is enabled, during which time any abnormal calls are
traced. If you do not specify this optional parameter, the period defaults to 30 seconds.
For example, the
sta-abn-trc:dms100-pc,log=trace1,confirm MML command prints call data for a
signaling path that is called dms100-pc to a file named trace1 (because the period parameter, n, is not
specified, the trace lasts for the default period, 30 seconds).