D-Link DES-3350SR User Manual - page 42
D-Link DES-3350SR Standalone Layer 3 Switch
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Figure 7 - 12. STP Port Settings window
In addition to setting Spanning Tree parameters for use on the switch level, the switch allows for the configuration of a group of
ports. This STP Group will use the switch-level parameters entered above, with the addition of Port Priority and Port Cost.
The STP Group spanning tree works in the same way as the switch-level spanning tree, but the root bridge concept is replaced with
a root port concept. A root port is a port of the group that is elected on the basis of port priority and port cost, to be the connection
to the network for the group. Redundant links will be blocked, just as redundant links are blocked on the switch level.
The STP on the switch level blocks redundant links between switches (and similar network devices). The port level STP will block
redundant links within the STP Group.
The following fields can be set:
Parameter
Description
From and To
Consecutive groups of ports may be
configured starting with the selected port.
State<Disabled>
Toggle to enable STP on the selected ports.
Cost
A Port Cost can be set from 1 to 200000000.
The lower the number, the greater the