24-port NWay Ethernet Switch User’s Guide
42
Switch Management and Operating Concepts
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Creates a single spanning tree from any combination of
switching or bridging elements.
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Creates multiple spanning trees – from any combination
of ports contained within a single switch, in user-specified
groups.
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Automatically reconfigures the spanning tree to
compensate for the failure, addition, or removal of any
element in the tree.
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Reconfigures the spanning tree without operator
intervention.
STP Operation Levels
The DES-3326 switch allows for two levels of operation: the
switch level and the port level. The switch level forms a
spanning tree consisting of links between one or more switches.
The port level constructs a spanning tree consisting of groups of
one or more ports. The STP operates in much the same way for
both levels.
On the switch level, STP calculates the Bridge Identifier for each
switch and then sets the Root Bridge and the Designated Bridges.
On the port level, STP sets the Root Port and the Designated
Ports.
The following are the user-configurable STP parameters for the
switch level:
Parameter
Description
Default
Value
Bridge Identifier
A combination of the User-set priority
and the switch’s MAC address. The
32768 + MAC
