Allied Telesis AT-DC2552XS - Manual (Page 362)

Chapter 14: STP Commands
362 Section II: Layer 2 Switching
SPANNING-TREE ERRDISABLE-TIMEOUT ENABLE
Syntax
spanning-tree errdisable-timeout enable
Parameters
None
Mode
Global Configuration mode
Description
Use this command to enable the timer for the BPDU guard feature. The
BPDU guard feature disables ports when they receive BPDUs. When the
timer is activated, the switch automatically reactivate disabled ports after
the specified time period. By default, the timer is disabled and it is set to
300 seconds.
Note
This command is applicable only when RSTP or MSTP is enabled.
When MSTP is enabled, this command sets the value to the CIST
(instance 0).
To change the time interval that ports remain disabled, use the
SPANNING-TREE ERRDISABLE-TIMEOUT INTERVAL command. See
“SPANNING-TREE ERRDISABLE-TIMEOUT INTERVAL” on page 363.
To disable the timer for the BPDU guard feature, use the NO SPANNING-
TREE PORTFAST BPDU-GUARD command.
Confirmation Command
“SHOW RUNNING-CONFIG” on page 116
Example
The following example enables the timer for the BPDU guard feature:
awplus> enable
awplus# configure terminal
awplus(config)# spanning-tree errdisable-timeout enable