Configuring System Information 135Managing LogsThe switch may generate messages in response to events, faults, or errors occurring on the platform aswell as changes in configuration or other occurrences. These messages are stored both locally on theplatform and forwarded to one or more centralized points of collection for monitoring purposes as well aslong term archival storage. Local and remote configuration of the logging capability includes filtering ofmessages logged or forwarded based on severity and generating component.Thein-memory log stores messages in memory based upon the settings for message component andseverity. On stackable systems, this log exists only on the top of stack platform. Other platforms in thestack forward their messages to the top of stack log. Access to in-memory logs on other than the top ofstack platform is not supported.Thepersistent log is stored in persistent storage. Two types of persistent logs may be configured.• The first log type is thesystem startup log. The system startup log stores the first N messages receivedafter system reboot. This log always has the log full operation attribute set to stop on full and can storeup to 32 messages.• The second log type is thesystem operation log. The system operation log stores the last N messagesreceived during system operation. This log always has the log full operation attribute set to overwrite.This log can store up to 1000 messages.Either the system startup log or the system operation log stores a message received by the log subsystemthat meets the storage criteria, but not both. On system startup, if the startup log is configured, it storesmessages up to its limit. The operation log, if configured, then begins to store the messages.The system keeps up to three versions of the persistent logs, named 0.txt, 1.txt, and2.txt. Upon system startup, 2.txt is removed, 1.txt is renamed 2.txt,0.txt is renamed 1.txt, 0.txt is created and logging begins into 0.txt.(Replace in the above example to specify olog for the operation log and slog for the startuplog.)The local persistent logs can be retrieved by using the CLI, xmodem over the local serial cable, andTFTP.To display the Logs menu page, click System →Logs in the tree view. Use this page access the followingfeatures:• Global SettingsTable 6-10. SNTP Servers CommandsCLI Command Descriptionshow sntp configuration Displays the SNTP configuration.show sntp status Displays the SNTP status.sntp server Configures the SNTP server to use SNTP to request and accept NTPtraffic from it.
