Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 556)

Spanning Tree Commands
Software Reference for x310 Series Switches
19.66 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
spanning-tree transmit-holdcount
Use this command to set the maximum number of BPDU transmissions that are held back.
Use the no variant of this command to restore the default transmit hold-count value.
Syntax spanning-tree transmit-holdcount
no spanning-tree transmit-holdcount
Default Transmit hold-count default is 3.
Mode Global Configuration
Example
undebug mstp
This command applies the functionality of the no debug mstp (RSTP and STP)
command.
awplus# configure terminal
awplus(config)# spanning-tree transmit-holdcount