1-12To do… Use the command… RemarksEnable information outputfor a specified switch in afabricinfo-center switch-on { unitunit-id | master | all }[ debugging | logging |trapping ]*OptionalBy default, debugging information output isenabled, and log and trap information outputare disabled for the master switch in a fabric.Debugging, log and trap information outputare all disabled for other switches in thefabric.Enable system informationoutput to a log hostinfo-center loghosthost-ip-addr [ channel{ channel-number |channel-name } | facilitylocal-number ]*RequiredBy default, the switch does not outputinformation to the log host.After you configure the switch to outputinformation to the log host, the switch usesinformation channel 2 by default.Configure the sourceinterface through which loginformation is sent to the loghostinfo-center loghost sourceinterface-type interface-numberOptionalBy default, no source interface is configured,and the system automatically selects aninterface as the source interface.Configure the output rulesof system informationinfo-center source{ modu-name | default }channel { channel-number |channel-name } [ { log | trap |debug } { level severity | statestate } ]*OptionalRefer to Table 1-4 for the default output rulesof system information.Set the format of the timestamp to be sent to the loghostinfo-center timestamploghost { date | no-year-date |none }OptionalBy default, the time stamp format of theinformation output to the log host is date.z After the switches form a fabric, you can use the info-center switch-on command to enable theinformation output for the switches to make the log, debugging and trap information of each switchin the fabric synchronous. Each switch sends its own information to other switches in the fabric andreceives information sent by other switches at the same time to update the information on itself. Inthis way, the switch ensures the synchronization of log, debugging and trap information in thewhole fabric.z Be sure to set the correct IP address when using the info-center loghost command. A loopback IPaddress will cause an error message prompting that this address is invalid.Setting to Output System Information to the Trap BufferFollow these steps to set to output system information to the trap buffer:To do… Use the command… RemarksEnter system view system-view —Enable the informationcenter info-center enable OptionalEnabled by default.