Command Reference Guide Global Configuration Mode Command Set61200990L1-35E Copyright © 2005 ADTRAN 337event-history onUse the event-history on command to enable event logging for the AOS system. Event log messages willnot be recorded unless this command has been issued (regardless of the event-history priorityconfigured). The event log may be displayed using the show event-history command. Use the no form ofthis command to disable the event log.Syntax DescriptionNo subcommands.Default ValuesBy default, the AOS event logging capabilities are disabled.Applicable PlatformsThis command applies to the NetVanta 300, 1000, 1000R, 2000, 3000, 4000, and 5000 andTotal Access 900 Series units.Command HistoryRelease 1.1 Command was introduced.Functional NotesThe event history provides useful information regarding the status of the system and individual port states.Use the event history as a troubleshooting tool when identifying system issues. The following is a sampleevent history log.#show event-historyUsing 526 bytes2002.07.12 15:34:01 T1.t1 1/1 Yellow2002.07.12 15:34:01 INTERFACE_STATUS.t1 1/1 changed state to down.2002.07.12 15:34:02 T1.t1 1/1 No Alarms2002.07.12 15:34:02 INTERFACE_STATUS.t1 1/1 changed state to up.2002.07.12 15:34:03 INTERFACE_STATUS.eth 0/1 changed state to up.2002.07.12 15:34:10 OPERATING_SYSTEM Warm Start2002.07.12 15:34:12 PPP.NEGOTIATION LCP up2002.07.12 15:34:12 PPP.NEGOTIATION IPCP upUsage ExamplesThe following example enables the AOS event logging feature:(config)#event-history on