Syslog And Debug Recordings; Syslog Message Format - AudioCodes Mediant 800B MSBR User Manual

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57

Syslog and Debug Recordings

Syslog is an event notification protocol that enables a device to send event notification
messages across IP networks to event message collectors, also known as Syslog servers.
The device contains an embedded Syslog client, which sends error reports / events that it
generates to a remote Syslog server using the IP / UDP protocol. This information is a
collection of error, warning, and system messages that records every internal operation of
the device.
For receiving Syslog messages generated by the device, you can use any of the following
Syslog servers:

Device's embedded Syslog server: The device provides an embedded Syslog
server, which is accessed through the Web interface. This provides limited Syslog
server functionality.

Wireshark: Third-party network protocol analyzer (http://www.wireshark.org).

Third-party, Syslog server: Any third-party Syslog server program that enables
filtering of messages according to parameters such as priority, IP sender address,
time, and date.
57.1

Syslog Message Format

The Syslog message is sent from the device to a Syslog server as an ASCII (American
Standard Code for Information Interchange) message. Syslog uses UDP as its underlying
transport layer mechanism. By default, UDP port 514 is assigned to Syslog, but this can be
changed (see ''Enabling Syslog'' on page 719).
Below is an example of a Syslog message:
13:10:57.811 : 10.13.4.12 : NOTICE
lgr_flow)(63
for address 10.33.2.42:5060 [Time: 04-19-2012@18:29:39]
Message Item
Message Types
Message Sequence Number
[S=<number>]
Version 6.8
) UdpTransportObject#0- Adding socket event
Table 57-1: Syslog Message Format Description
Syslog generates the following types of messages:

ERROR: Indicates that a problem has been identified that
requires immediate handling.

WARNING: Indicates an error that might occur if
measures are not taken to prevent it.

NOTICE: Indicates that an unusual event has occurred.

INFO: Indicates an operational message.

DEBUG: Messages used for debugging.
Notes:

The INFO and DEBUG messages are required only for
advanced debugging. Therefore, by default, they are not
sent by the device.

When viewing Syslog messages in the Web interface,
these message types are color coded.
By default, Syslog messages are sequentially numbered in
the format [S=<number>], for example, "[S=643]". A skip in
the number sequence of messages indicates a loss of
message packets. For example, in the below Syslog
message, messages 238 through 300 were not received. In
other words, 63 Syslog messages were lost (the sequential
57. Syslog and Debug Recordings
: [S=235][SID:1034099026] (
Description
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