Configuration Guide Configuring Syslog
The default filtering direction is all, that is, all logs are filtered out.
Run the default logging filter direction command to restore the default filtering direction.
 Configuring the Log Filtering Mode
logging filter type { contains-only | filter-only }
contains-only: Indicates that only logs that contain keywords specified in the filtering rules are displayed.
filter-only: Indicates that logs that contain keywords specified in the filtering rules are filtered out and will not
be displayed.
Global configuration mode
Log filtering modes include contains-only and filter-only. The default filtering mode is filter-only.
 Configuring the Log Filtering Rule
logging filter rule { exact-match module module-name mnemonic mnemonic-name level level |
single-match { level level | mnemonic mnemonic-name | module module-name } }
exact-match: If exact-match is selected, you must specify all three filtering options.
single-match: If single-match is selected, you may specify only one of the three filtering options.
module module-name: Indicates the module name. Logs of this module will be filtered out.
mnemonic mnemonic-name: Indicates the mnemonic. Logs with this mnemonic will be filtered out.
level level: Indicates the log level. Logs of this level will be filtered out.
Global configuration mode
Log filtering rules include exact-match and single-match.
The no logging filter rule exact-match [ module module-name mnemonic mnemonic-name level level ]
command is used to delete the exact-match filtering rules. You can delete all exact-match filtering rules at a
time or one by one.
The no logging filter rule single-match [ level level | mnemonic mnemonic-name | module
module-name ] command is used to delete the single-match filtering rules. You can delete all single-match
filtering rules at a time or one by one.
Configuration Example
 Configuring Syslog Filtering
It is required to configure the syslog filtering function as follows:
1. Set the filtering directions of logs to terminal and server.
2. Set the log filtering mode to filter-only.
3. Set the log filtering rule to single-match to filter out logs that contain the module name "SYS".
 Configure the syslog filtering function.
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