Troubleshooting Tools
There are many tools within Windows 2000 that allow you to
monitor and diagnose network and dial-up connections. PPP logging records
the series of programming functions and PPP control messages during a PPP
connection. You can verify whether your modem is working properly by using
modem diagnostics and logging. The Netdiag tool can be used to test many
networking components. It can be configured to run and report on tools
such as Ping, IPConfig, and so on.
PPP Loggingwww.tartoos.com
You can troubleshoot Windows 2000 Professional PPP client
connections by using PPP logging on Windows 2000. PPP logging records the
series of programming functions and PPP control messages during a PPP
connection and is a valuable source of troubleshooting information when
you are troubleshooting the failure of a PPP connection. To enable PPP
logging on your Windows 2000 remote access server, select the Enable
Point-to-Point Protocol (PPP) logging option on the Event Logging
tab from the properties of a remote access server using the Routing and
Remote Access administrative tool.www.tartoos.com
To enable PPP logging on the client that is initiating the
connection, use the Netsh command. The syntax for the command is:
Netsh ras set tracing ppp enabled
Conversely, if you want to stop PPP logging, the command
syntax is:
Netsh ras set tracing ppp disabledwww.tartoos.com
Modem Logging
By using Phone and Modem Options in Control Panel,
you can record a log of commands as they are sent to your modem by
communication programs or the operating system. On Windows 2000
Professional, logging is always turned on and the log is overwritten at
the beginning of every session unless you select the Append to Log
check box.
Note
Commands sent to the modem are captured
in the file %SystemRoot%\ModemLog_Model.txt.
%SystemRoot%is usually C:\Winnt\System32\.
Model is the name of the modem as it appears in the list of installed
modems on the Modems tab of Phone and Modem Options.
Modem Diagnosticswww.tartoos.com
You can verify whether your modem is working properly by
using the diagnostics that are available by means of Phone and Modem
Options in Control Panel.
When you query a modem, Windows 2000 runs the commands and
displays the results, as shown in Table 21.7.
Table 21.7 Modem Query Commands and Responseswww.tartoos.com
|
Command
|
Response
|
|
ATQ0V1E0
|
Initializes the query.
|
|
AT+GMM
|
Model identification (ITU V.250 recommendation is not
supported by all modems).
|
|
AT+FCLASS=?
|
Fax classes supported by the modem, if any.
|
|
AT#CLS=?
|
Shows whether the modem supports the Rockwell voice
command set.
|
|
ATIn
|
Displays manufacturer’s information
for n = 1 through 7. This provides information such as the port speed,
the result of a checksum test, and the model information. Check the
manufacturer's documentation for the expected results.
|
NetDiagwww.tartoos.com
The Netdiag tool is available in the \support tools
directory of your Windows 2000 Professional operating system CD. Netdiag
isolates networking and connectivity problems by performing a series of
tests to determine the state of your network client and its functionality.
Optionally, it can generate a report of the results. For example, it can
report on the network adapter configuration details, including the adapter
name, configuration, media, globally unique identifier (GUID), and
statistics. Using it, you can run a comprehensive sequence of networking
tools such as Ping, IPConfig, and so on.
Device Managerwww.tartoos.com
Device Manager provides you with information about how the
hardware on your computer is installed and configured. It can help you
determine the source of resource conflicts, and the status of COM ports.
You can also use Device Manager to check the status of your hardware and
update device drivers, such as modem drivers, on your computer.
|
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