Allied Telesis AT-S63 - Manual (Page 237)

AT-S63 Management Software Command Line Interface User’s Guide
237
The PRIORITY parameter specifies the new MSTI priority value. The range
is 0 (zero) to 61,440 in increments of 4,096, with 0 being the highest
priority.
Examples
The following command changes the MSTI priority value to 45,056
(increment 11) for the MSTI ID 4:
set mstp msti mstiid=4 priority=11
The following command changes the MSTI priority value to 8,192
(increment 2) for the MSTI ID 6:
set mstp msti mstiid=6 priority=2