Allied Telesis AT-S39 - Manual (Page 99)

AT-S39 Command Line Interface User’s Guide
99
SET STP
Syntax
set stp [default] [priority=priority]
[hellotime=hellotime] [forwarddelay=forwarddelay]
[maxage=maxage]
Parameters
default Returns all bridge and port STP settings to the default
values. This parameter performs the same function as
the RESET STP command. This parameter should not
be used with any other command parameter. STP
must be disabled in order for you to use this
parameter. To disable STP, use the DISABLE 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. When a
root bridge goes off-line, the bridge with the next
priority number automatically takes over as the root
bridge. The range is 0 (zero) to 65,535, with 0 being
the highest priority. The default is 32,768.
hellotime Specifies the time interval between generating and
sending configuration messages by the bridge. The
range is 1 to 10 seconds. The default is 2 seconds.
forwarddelay Specifies the waiting period in seconds before a
bridge changes to a new state, for example, becomes
the new root bridge after the topology changes. If the
bridge transitions too soon, not all links may have yet
adapted to the change, resulting in network loops.
The range is 4 to 30 seconds. The default is 15 seconds.
maxage Specifies the length of time in seconds after which
stored bridge protocol data units (BPDUs) are deleted
by the bridge. All bridges in a bridged LAN use this
aging time to test the age of stored configuration
messages called bridge protocol data units (BPDUs).