debug spanning-tree { global | { all | errors | init-shut |
management | memory | bpdu | events | timer | state-machine
{ port-info | port-recieve | port-role-selection |
role-transition | state-transition | protocol-migration |
topology-change | port-transmit | bridge-detection } |
redundancy | sem-variables}}
no debug spanning-tree {global | {all | errors | init-shut |
management | memory | bpdu |events | timer | state-machine
{port-info | port-recieve | port-role-selection |
role-transition | state-transition | protocol-migration |
topology-change | port-transmit | bridge-detection } redundancy
| sem-variables}}