Logging Level: Setting the log level controls which messages are stored or filtered out. A log level of Debug will record the most information, while a log level of Critical will only record the most urgent messages. Each level includes all messages from all of the levels below it on the list (e.g. “Warning” includes all “Error” and “Critical” messages as well).
Debug
Info
Warning
Error
Critical
Enable Logging to a Syslog Server: Enabling this option will send log messages to a specified Syslog server. After enabling, type the Hostname or IP address of the Syslog server (or select from the dropdown menu).
Use Secure Syslog Binding: Enable this option to require that the logs are transmitted using the specified syslog service binding.
Note
Set up the syslog service binding on the Administration > Router Services page, in the Lan Network Binding section:
Syslog Server Address: Type the Hostname or IP address of the Syslog Server.
Syslog Server Port: Type the Port Number of the Syslog Server.
Include System ID: This option will include the router’s "System ID" at the beginning of every log message. This is often useful when a single remote Syslog server is handling logs for several routers.
Include Timestamp: Select this option to begin message text with a timestamp in YYYYmmddTHHMMSS[.sss]+|-NNNN format. Without this option, the message sent to a syslog server does not include any timestamp, relying on the receiving server to timestamp each log entry on receipt.
Note
This timestamp, including the time zone offset, may be incorrect until the router receives an NTP time update.
Include UTF8 Byte Order Mark: The log message is sent using UTF-8 encoding. By default the router will attach the Unicode Byte Order Mark (BOM) to the Syslog message in compliance with the Syslog protocol, RFC5424. Some Syslog servers may not fully support RFC5424 and will treat the BOM as ASCII text, which will appear as garbled characters in the log. If this occurs, disable this option.
Include RFC-3164 HEADER: Select this option to include the RFC-3164 compliant HEADER in each syslog message. For greatest RFC-3164 compliance, deselect other optional log fields. Without this option, the message sent to a syslog server includes the <PRI> field specified by RFC-3164, but does not include the HEADER (composed of TIMESTAMP and HOSTNAME).
Note
The TIMESTAMP format is Mmm dd hh:mm:ss in local time, without year or timezone. This timestamp may be incorrect until the router receives an NTP time update.
Log to attached USB stick: Only enable this option if instructed by a support agent. This will write a very verbose log file to the root level of an attached USB stick. Please disable the feature before removing the USB stick, or you may lose some logging data.
Verbose modem logging: Only select an option if instructed by a support agent.