Display Stp Down-Port - 3Com S7906E Command Reference Manual

Parameters
None
Description
Use the display stp abnormal-port command to view the information about abnormally blocked ports.
Any of the following reasons may cause a port to be abnormally blocked:
Root guard action
Loop guard action
MSTP BPDU format compatibility protection action
Examples
# View information about abnormally blocked ports.
<Sysname> display stp abnormal-port
MSTID Blocked Port
1 GigabitEthernet2/0/1
2 GigabitEthernet2/0/2
2 GigabitEthernet2/0/3
Table 1-4 display stp abnormal-port command output description
Field
MSTID
Blocked Port
Reason

display stp down-port

Syntax
display stp down-port
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display stp down-port command to view the information about ports blocked by STP
protection actions.
MSTI ID
Name of a blocked port, which corresponds to the related MSTI
Reason that caused abnormal blocking of the port.
ROOT-Protected: root guard action
LOOP-Protected: loop guard action
Formatcompatibility-Protected:
protection action
1-6
Reason
ROOT-Protected
LOOP-Protected
Formatcompatibility–Protected
Description
MSTP BPDU format compatibility