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19.2 Commands for Monitor and Debug
19.2.1 debug spanning-tree
Command:
debug spanning-tree
no debug spanning-tree
Function:
Enable the MSTP debugging information; the command “
no debug spanning-tree
” disables the MSTP debugging
information.
Command mode:
Admin Mode
Usage Guide:
This command is the general switch for all the MSTP debugging. Users should enable the detailed debugging
information, and then they can use this command to display the relevant debugging information. In general, this
command is used by skilled technicians.
Example:
Enable to receive the debugging information of BPDU messages on the port1/1.
Switch#debug spanning-tree
Switch#debug spanning-tree bpdu rx interface e1/1
19.2.2 show mst-pending
Command:
show mst-pending
Function:
In the MSTP region mode, display the configuration of the current MSTP region.
Command mode:
Admin Mode