241Configuring the information centerThe information center on a device classifies and manages logs for all modules so that networkadministrators can monitor network performance and troubleshoot network problems.OverviewThe information center receives logs generated by source modules and outputs logs to differentdestinations according to user-defined output rules. You can classify, filter, and output logs based onsource modules. To view the supported source modules, use info-center source ?.Figure 74 Information center diagramBy default, the information center is enabled. It affects system performance to some degree whileprocessing large amounts of information. If the system resources are insufficient, disable the informationcenter to save resources.Log typesLogs are classified into the following types:• Common logs—Record common system information. Unless otherwise specified, the term "logs" inthis document refers to common logs.• Diagnostic logs—Record debug messages.• Security logs—Record security information, such as authentication and authorization information.• Hidden logs—Record log information not displayed on the terminal, such as input commands.• Trace logs—Record system tracing and debug messages, which can be viewed only after the devkitpackage is installed.• Custom logs—Record vendor-specific information.Log levelsLogs are classified into eight severity levels from 0 through 7 in descending order. The information centeroutputs logs with a severity level that is higher than or equal to the specified level. For example, if youspecify a severity level of 6 (informational), logs that have a severity level from 0 to 6 are output.
