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Predefined user roles
network-admin
network-operator
Examples
# In MSTP mode, display information about ports that are blocked by spanning tree protection
functions.
<Sysname> display stp abnormal-port
MST ID
1
2
12
# In PVST mode, display information about ports that are blocked by spanning tree protection
functions.
<Sysname> system-view
[Sysname] stp mode pvst
[Sysname] display stp abnormal-port
VLAN ID
1
2
2
Table 27 Command output
Field
MST ID
VLAN ID
Blocked Port
Reason
display stp bpdu-statistics
Use display stp bpdu-statistics to display the BPDU statistics on ports.
Syntax
display stp bpdu-statistics [ interface interface-type interface-number [ instance instance-list ] ]
Views
Any view
Predefined user roles
network-admin
Blocked Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
Blocked Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
GigabitEthernet1/0/3
Description
MSTI of the blocked port.
VLAN of the blocked port.
Name of a blocked port.
Reason that the port was blocked:
•
Root-Protected—Root guard function.
•
Loop-Protected—Loop guard function.
•
Loopback-Protected—Self-loop protection. A port in the MSTI receives a
BPDU that it sends.
•
Disputed—Dispute protection. A port receives a low-priority BPDU from a
non-blocked designated port.
•
InconsistentPortType-Protected—Inconsistent port type protection.
•
InconsistentPvid-Protected—Inconsistent PVID protection.
Reason
Root-Protected
Loop-Protected
Loopback-Protected
Reason
Root-Protected
Loop-Protected
Loopback-Protected
119
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