Displaying and Maintaining IS-IS 353Displaying andMaintaining IS-ISEnable IS-IS, and enter IS-ISviewisis [ process-id ] RequiredDisabled by defaultEnable the GR capability forIS-ISgraceful-restart RequiredDisabled by defaultSet the Graceful Restartintervalgraceful-restart intervaltimerRequired300 seconds by defaultConfigure to set the SA bitduring restartgraceful-restartsuppress-saOptionalBy default, the SA bit is notset.To do… Use the command… RemarksTo do… Use the command… RemarksDisplay brief IS-IS information display isis brief [ process-id ] Available in any viewDisplay information aboutIS-IS enabled interfacesdisplay isis interface [ verbose ][ process-id ]Available in any viewDisplay IS-IS licenseinformationdisplay isis license Available in any viewDisplay IS-IS LSDB information display isis lsdb [ [ l1 | l2 | level-1 |level-2 ] | [ lsp-id LSPID | lsp-namelspname ] | local | verbose ] *[ process-id ]Available in any viewDisplay IS-IS mesh groupinformationdisplay isis mesh-group[ process-id ]Available in any viewDisplay thehost-name-to-system-IDmapping tabledisplay isis name-table [ process-id ] Available in any viewDisplay IS-IS neighborinformationdisplay isis peer [ verbose ][ process-id]Available in any viewDisplay IS-IS routinginformationdisplay isis route [ ipv4 ] [ [ level-1 |level-2 ] | verbose ] * [ process-id ]Available in any viewDisplay SPF calculation loginformationdisplay isis spf-log [ process-id ] Available in any viewDisplay the statistics about anIS-IS processdisplay isis statistics [ level-1 |level-2 | level-1-2 ] [ process-id ]Available in any viewDisplay the IS-IS GracefulRestart statedisplay isis graceful-restart status[ level-1 | level-2 ] [ process-id ]Available in any viewClear the data structureinformation of an IS-ISprocessreset isis all [ process-id ] Available in user viewClear the data structureinformation of an IS-ISneighborreset isis peer system-id [ process-id ] Available in user view