Allied Telesis AT-S100 - Manual (Page 63)

AT-S100 Management Software User’s Guide
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blocked to prevent data loops, or activated to maintain communications
between the various network segments. This is the process of
convergence.
With STP, convergence can take up to a minute to complete in a large
network. This can result in the loss of communication between various
parts of the network during the convergence process, and the subsequent
lost of data packets.
RSTP is much faster. It can complete a convergence in seconds, and so
greatly diminish the possible impact the process can have on your
network.
Only one spanning tree protocol can be active on the switch at a time. The
default is RSTP.
Setting the Spanning Tree Mode
As mentioned above, the default setting for the spanning tree mode is
RSTP. To change the current spanning tree mode setting, use the
SPANNING-TREE MODE command. The syntax of this command is:
spanning-tree mode stp|rstp
To set the spanning tree mode to STP, enter the following commands:
switch# configure terminal
switch(config)# spanning-tree mode stp
For more information about this command, see “SPANNING-TREE
MODE” on page 252.
Displaying Spanning Tree Settings
The spanning tree display includes the following information:
ˆ Bridge setting
ˆ Root Path Cost
ˆ Root Port
ˆ Bridge Priority
ˆ Forward Delay time
ˆ Hello time
ˆ Maximum Age
ˆ Root ID