Allied Telesis AT-S25 - Manual (Page 230)

Section III: Web Browser Management
230
STP and RSTP Parameters
Since both STP and RSTP are sharing the same parameters; instead of
having them listed by sections in this chapter, they are now listed in the
Table 22 below:
Note
A change to parameter will take effect on both protocols.
Table 22 STP and RSTP Parameters
PARAMETER DESCRIPTION
Force Version This selection determines whether the bridge will
operate with RSTP or in an STP-compatible mode.
• If you select RSTP, the bridge operates all ports in
RSTP, except for those ports that receive STP BPDU
packets.
• If you select Force STP Compatible, the bridge
operates in RSTP, using the RSTP parameter settings,
but it sends out only STP BPDU packets from the
ports.
Bridge Priority The priority number for the bridge. This number is used
in determining the root bridge. 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.
This parameter has a range of from 0 (zero) to 61,440 in
increments of 4096, with 0 being the highest priority.
For a list of the increments, refer to Table 6, Bridge
Priority Value Increments on page 94.
Bridge Hello
Time The time interval between generating and sending
configuration messages by the bridge.
This parameter has a range of from 1 to 10 seconds. The
default is 2 seconds.
Bridge
Forwarding The waiting period 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,
possibly resulting in a network loop.
This parameter has a range of from 4 to 30 seconds. The
default is 15 seconds.