User's Manual

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Severity
Specify the severity level of the log messages to write to the system log(s). This setting applies to
messages stored in RAM and flash. In the following list, the severity levels are listed from most
severe (top) to least severe (bottom):
• Emergency indicates that the system is unusable. It is the highest level of severity.
• Alert indicates action must be taken immediately.
• Critical indicates critical conditions.
• Error indicates error conditions.
• Warning indicates warning conditions.
• Notice indicates normal but significant conditions.
• Informational indicates informational messages.
• Debug indicates debug-level messages.
For example, if you specify Critical, then only critical, alert, and emergency messages are
written to the log(s).
Depth
RAM and flash memory can store up to 512 messages each. When the depth value you
configure is reached, the oldest log message is overwritten by the new log message.
Remote syslog configuration
You can view up to 512 messages stored in RAM in the Events section of the System log page.
To view a longer history of messages, you must set up a remote syslog server that acts as a
syslog log relay host on your network. Then, you can configure the M220 to send syslog
messages to the remote server. The Severity level setting configured in the System log
configuration section determines which messages are stored in RAM and are available for
relay to a remote syslog server.
Using the remote syslog feature provides these benefits:
• Allows aggregation of syslog messages from multiple M220s. The MAC address of the
sending AP displays at the start of each message.
• Stores a longer history of messages than those that are kept on a single M220.
• Can trigger scripted management operations and alerts.
The procedure for configuring a remote log host depends on the type of system you use as the
remote host.
You can use the Remote syslog configuration section of the System log page to configure
M220 remote log settings.