Displaying And Maintaining The Spanning Tree - HP 6600 Configuration Manual

With the TC-BPDU guard function, you can set the maximum number of immediate forwarding address
entry flushes that the device can perform every a specified period of time (10 seconds). For TC-BPDUs
received in excess of the limit, the device performs a forwarding address entry flush when the time period
expires. This prevents frequent flushing of forwarding address entries.
HP recommends not disabling this feature.
To enable TC-BPDU guard:
Step
1. Enter system view.
2. Enable the TC-BPDU guard function.
3. Configure the maximum number of
forwarding address entry flushes that the
device can perform every 10 seconds.

Displaying and maintaining the spanning tree

Task
Display information about ports blocked
by spanning tree protection functions.
Display BPDU statistics on ports.
Display information about ports shut
down by spanning tree protection
functions.
Display historical information about port
role calculations for the specified MSTI or
all MSTIs.
Display statistics about TC/TCN BPDUs
sent and received by all ports in the
specified MSTI or all MSTIs.
Display spanning tree status and
statistics.
Display MST region configuration
information in effect.
Display root bridge information for all
MSTIs.
Clear spanning tree statistics.
Command
system-view
stp tc-protection
enable
stp tc-protection
threshold number
Command
display stp abnormal-port [ | { begin |
exclude | include } regular-expression ]
display stp bpdu-statistics [ interface
interface-type interface-number [ instance
instance-id ] ] [ | { begin | exclude |
include } regular-expression ]
display stp down-port [ | { begin |
exclude | include } regular-expression ]
display stp [ instance instance-id ] history
[ slot slot-number ] [ | { begin | exclude |
include } regular-expression ]
display stp [ instance instance-id ] tc [ slot
slot-number ] [ | { begin | exclude |
include } regular-expression ]
display stp [ instance instance-id ]
[ interface interface-list | slot slot-number ]
[ brief ] [ | { begin | exclude | include }
regular-expression ]
display stp region-configuration [ |
{ begin | exclude | include }
regular-expression ]
display stp root [ | { begin | exclude |
include } regular-expression ]
reset stp [ interface interface-list ]
76
Remarks
N/A
Optional.
By default, TC-BPDU guard is enabled.
Optional.
The default setting is 6.
Remarks
Available in any
view.
Available in any
view.
Available in any
view.
Available in any
view.
Available in any
view.
Available in any
view.
Available in any
view.
Available in any
view.
Available in user
view.