Nortel Networks Mediant TP-1610 SIP - Manual (Page 165)

Mediant 2000 SIP User’s Manual 9. Diagnostics
Version 4.4 165 July 2005
9 Diagnostics
Several diagnostic tools are provided, enabling you to identify correct functioning of the Mediant
2000, or an error condition with a probable cause and a solution or workaround.
• Front panel indicator LEDs on the Mediant 2000. The location and functionality of the front
panel LEDs is shown in Section
2.3.2 on page 23 .
• Mediant 2000 Self-Testing on hardware initialization (refer to Section 9.1 below).
• Syslog Event Notification Messages (refer to Section 9.2 below).
9.1 Mediant 2000 Self-Testing
The Mediant 2000 features two self-testing modes: rapid and detailed.
Rapid self-test mode is invoked each time the media gateway completes the initialization
process. This is a short test phase in which the only error detected and reported is failure in
initializing hardware components. All Status and Error reports in this self-test phase are reported
through Network Interface ports, as well as indicated by the LED Status Indicators.
Detailed self-test mode is invoked when initialization of the media gateway is completed and if
the configuration parameter EnableDiagnostics is set to 1 (this parameter can be configured
through the ini file mechanism). In this mode, the media gateway tests all the hardware
components (memory, DSP, etc.), outputs the status of the test results, and ends the test. To
continue operational running, reset the media gateway again but this time configure the
EnableDiagnostics parameter to 0.
9.2 Syslog Support
Syslog protocol is an event notification protocol that enables a machine to send event notification
messages across IP networks to event message collectors - also known as Syslog servers.
Syslog protocol is defined in the IETF RFC 3164 standard.
Since each process, application and operating system was written independently, there is little
uniformity to Syslog messages. For this reason, no assumption is made on the contents of the
messages other than the minimum requirements of its priority.
Syslog uses UDP as its underlying transport layer mechanism. The UDP port that was assigned
to Syslog is 514
The Syslog message is transmitted as an ASCII (American Standard Code for Information
Interchange) message. The message starts with a leading "<" ('less-than' character), followed by
a number, which is followed by a ">" ('greater-than' character). This is optionally followed by a
single ASCII space.
The number described above is known as the Priority and represents both the Facility and
Severity as described below. The Priority number consists of one, two, or three decimal integers.
For example:
<37> Oct 11 16:00:15 mymachine su: 'su root' failed for lonvick on /dev/pts/8
Note that when NTP is enabled, a timestamp string [hour:minutes:seconds] is added to all Syslog
messages (for information on NTP, refer to Section
5.9.1.3 on page 63 ).