Allied Telesis AT-S63 - Manual (Page 466)

Chapter 26: Spanning Tree Protocol Commands
466 Section V: Spanning Tree Protocols
SET STP
Syntax
set stp [default] [priority= priority ] [hellotime= hellotime ]
[forwarddelay= forwarddelay ] [maxage= maxage ]
Parameters
default Disables STP and returns all bridge and port STP
settings to the default values. This parameter cannot be
used with any other command parameter and can only
be used when STP is disabled. (This parameter
performs the same function as the PURGE STP
command.)
priority Specifies the priority number for the bridge. This
number is used in determining the root bridge for STP.
The bridge with the lowest priority number is selected
as the root bridge. If two or more bridges have the
same priority value, the bridge with the numerically
lowest MAC address becomes the root bridge.
The range is 0 to 61,440 in increments of 4,096. The
range is divided into sixteen increments, as shown in
Table 12. You specify the increment that represents the
desired bridge priority value. The default value is
32,768 (increment 8).
Table 12. Bridge Priority Value Increments
Increment
Bridge
Priority
Increment
Bridge
Priority
0 0 8 32768
1 4096 9 36864
2 8192 10 40960
3 12288 11 45056
4 16384 12 49152
5 20480 13 53248
6 24576 14 57344
7 28672 15 61440