Cisco Systems Dial NMS manual Console errors or logging console warnings

Task 4—Using Syslog, NTP, and Modem Call Records to Isolate and Troubleshoot Faults

About Modem Call Records

Table 20	Logging Command Descriptions
Command		Purpose
logging buffered 10000 debugging		Sets the internal log buffer to 10000 bytes for debug output.
		New messages overwrite old messages.
		You can tune buffered-logging parameters for collecting logs
		on a NAS when you are at a remote location. For example, turn
		on debugs and start logging them in the history buffer. Make
		your test call; then, re-connect in shell mode and inspect the
		debugs.
logging console informational		Sends the most urgent informational logs to the console port in
no logging console guaranteed		the event the IP network or syslog server fails. Alternatively,
		send messages to the console by using the commands logging
		console errors or logging console warnings.
			Caution	Logging console can cause the router to
				intermittently freeze up as soon as the
				console port overloads with log
				messages. Debugs and modem call
				records sent to the console port are
				potentially destructive to the Cisco IOS
				software.
logging trap debugging		Enables logging up to the debug level (all eight levels).
logging 172.21.100.100		Specifies the IP address of the syslog server.
logging facility local0		Assigns a logging-facility tag (local0) to the syslog messages
		for this device. The tag must match the facility number
		configured in the syslog.conf file on the Unix host. See Step 1
		in “Configuring the Syslog Daemon” section on page 76.
		In this case study, each device sends syslog messages to the
		same log file on the same syslog server.

Step 3 Enable modem call records in the Cisco IOS by entering the following command:

!

modem call-record terse

!

A modem call record, which is a syslog message, looks like this:

May 26 22:04:23.346 CST: %CALLRECORD-3-MICA_TERSE_CALL_REC: DS0 slot/contr/chan=

0/0/0, slot/port=2/14, call_id=26, userid=(n/a), ip=0.0.0.0, calling=4082322078,

called=3241933, std=V.34+, prot=LAP-M, comp=V.42bis both, init-rx/tx b-rate=264 00/24000, finl-rx/tx b-rate=28800/24000, rbs=0, d-pad=None, retr=1, sq=4, snr=27

,rx/tx chars=136/6470, bad=2, rx/tx ec=134/184, bad=0, time=594, finl-state=Ste ady, disc(radius)=(n/a)/(n/a), disc(modem)=DF03 Tx (host to line) data flushing - OK/Requested by host/DTR dropped

Basic Dial NMS Implementation Guide

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