Processing when the number of logs in the log buffer of the USG2000&5000 series reaches the upper limit

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The log buffer is certain fixed space reserved in the flash memory for saving a small amount of log information. After logs are output to the log buffer, you can use the specified command to view the logs on the console or directly view them on the terminal.
The log buffer capacity is limited and saves only the latest logs. Therefore, logs must be output to a log host and saved in files for storage and further analysis.
The current buffer size refers to the number of logs that can be stored in the log buffer. When the number of logs entering the log buffer exceeds the current log buffer size, new logs overwrite the earliest logs.

Other related questions:
Are all logs recorded in the log buffer
Only some logs are recorded in the log buffer. Logs that can be recorded in the log buffer are restricted. -By default, only logs at levels lower than the warning logs (level 4) are recorded in the log buffer. Therefore, logs at levels 0 to 4 are recorded to the log buffer and logs at levels 5 and 7 are not recorded. You can run the info-center source { module-name | default } channel { channel-number | channel-name } log { state { off | on } | level severity } command to set the levels of logs that can be recorded to the log buffer. -The log buffer space is limited. If the number of logs in the log buffer reaches the maximum value, new logs will replace the existing logs that are placed earlier in the log buffer until all the new logs are stored. By default, the log buffer can hold a maximum of 512 logs. You can run the info-center logbuffer size size command to set the maximum number to 1024.

How can I clear logs on a WLAN device
Logs generated on a WLAN device are saved in the log buffer. After the number of logs reaches the specified threshold, the logs are saved to the syslogfile or logfile folder in the device's flash memory. When the WLAN device has been running for a long time, it generates a large number of logs. In this case, you can run the info-center max-logfile-number command to set the maximum number of logs to be saved on the device. You can clear all logs in the buffer and the flash memory. 1. Clear logs in the log buffer or trap buffer. - Run the reset logbuffer command in the user view to clear logs in the log buffer. - Run the reset trapbuffer command in the user view to clear traps in the trap buffer. 2. Clear log files in the flash memory. Run the delete command in the user view to delete log files in the flash memory. To delete logs in the logfile folder, perform the following operations: - delete flash:/logfile/xxx //Delete a log record. xxx specifies the log file name saved in the flash memory. - delete /unreserved flash:/logfile/xxx //Permanently delete a log record, which cannot be restored. - reset recycle-bin //Empty the recycle bin.

How can command operation logs be displayed in the log buffer of an AR
By default, only warning logs are displayed in the log buffer. Command operation logs are at the notifications level, which is lower than warning. Therefore, command operation logs will not be displayed in the log buffer. To view command line operation logs in the log buffer, perform the following operations: 1. Run the system-view command to enter the system view. 2. Run the info-center source default channel logbuffer log level notifications command to allow logs of the notifications level to be displayed in the log buffer.

First login to the USG2000&5000
Administrators can log in to the web UI through the console interface or HTTPS.

Connecting the USG2000&5000 series to the log server
The method of connecting the USG2000&5000&6000 to the log server is as follows: 1. Run the system-view command to access the system view. 2. Optional: Run the info-center source { module-name | default } channel { channel-number | channel-name } [ log { state { on | off } | level severity } * ] command to add log information to the information channel. By default, the information center dispatches the logs destined for a log server to information channel 2. Log output is enabled and the severity of the logs is informational. This command is used only to change the default configuration. module-name specifies the module that outputs logs, and severity specifies the log severity. 3. Bind an information channel to a log server, so that logs are output to the log server through the information channel. 4. Configure the IP address and other parameters of the log server. info-center loghost ip-address [ port ] [ module { module-name } &<1-6> ] info-center loghost ip-address [ port ] [ channel { channel-number | channel-name } | facility local-number | language { chinese | english } ]* The channel-number or channel-name configured here shall be consistent with that in step 1. 5. Optional: Run the info-center loghost source ip-address command to specify the IP address that sends log information.

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