Filter
Top Products
600 CHAPTER 38: MSTP CONFIGURATION COMMANDS
<Sysname> display stp instance 0 interface Ethernet 1/1 to Ethernet
1/4 GigabitEthernet 1/1 to GigabitEthernet 1/4 brief
MSTID Port Role STP State Protection
0 Ethernet1/1 ALTE DISCARDING LOOP
0 Ethernet1/2 DESI FORWARDING NONE
0 Ethernet1/3 DESI FORWARDING NONE
0 Ethernet1/4 DESI FORWARDING NONE
0 GigabitEthernet1/1 DESI FORWARDING NONE
0 GigabitEthernet1/2 DESI FORWARDING NONE
0 GigabitEthernet1/3 DESI FORWARDING NONE
0 GigabitEthernet1/4* DESI FORWARDING NONE
(*) means port in aggregation group
display stp abnormal-port
Syntax display stp abnormal-port
View Any view
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 Reason
1 Ethernet1/0 ROOT-Protected
2 Ethernet1/1 LOOP-Protected
2 Ethernet1/2 Formatcompatibility-Protected
Table 103 Description on the fields of the display stp command
Field Description
MSTID MST instance ID in the MST region
Port Port name, corresponding to each MST instance
Role Port role
STP State MSTP status on the port, including forwarding, discarding, and
learning
Protection Protection type on the port, including root guard, loop guard,
and BPDU guard
(*) means port in aggregation
group
* indicates a port in an aggregation group