[SWA]dis stp -------[CIST Global Info][Mode MSTP]------- Bridge ID : 0.74e4-8a2c-0100 Bridge times : Hello 2s MaxAge 20s FwdDelay 15s MaxHops 20 Root ID/ERPC : 0.74e4-8a2c-0100, 0 RegRoot ID/IRPC : 0.74e4-8a2c-0100, 0 RootPort ID : 0.0 BPDU-Protection : Disabled Bridge Config- Digest-Snooping : Disabled TC or TCN received : 5 Time since last TC : 0 days 0h:4m:16s ----[Port54(FortyGigE1/0/53)][DOWN]---- Port protocol : Enabled Port role : Disabled Port Port ID : 128.54