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DES-3228PA Embedded Web System User Guide
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Alternate — Provides an alternate path to the root switch from the root interface.
–
Backup — Provides a backup path to the designated port path toward the Spanning Tree leaves. Backup
ports occur only when two ports are connected in a loop by a point-to-point link, or when a LAN has two
or more connections connected to a shared segment.
–
Disabled — The port is not participating in the Spanning Tree.
•
Speed — Indicates the speed at which the port is operating.
•
Path Cost — Indicates the port contribution to the root path cost. The path cost is adjusted to a higher or
lower value, and is used to forward traffic when a path is re-routed.
•
Priority — Priority value of the port. The priority value influences the port choice when a bridge has two ports
connected in a loop. The priority value is between 0 -240. The priority value is determined in increments of 16.
•
Designated Bridge ID — Indicates the bridge priority and the MAC Address of the designated bridge.
•
Designated Port ID — Indicates the selected port D-Link priority and interface.
•
Designated Cost — Indicates the cost of the port participating in the STP topology. Ports with a lower cost
are less likely to be blocked if STP detects loops.
•
Forward Transitions — Indicates the number of times the port has changed from Forwarding state to Block-
ing state.
•
LAG — Indicates the LAG to which the port belongs.
2.
Click
. The STP Interface Settings Page opens:
Figure 49: STP Interface Settings Page
3.
Select Enable in the STP field.
4.
Define the Fast Link, Enable Root Guard, Path Cost, Default Path Cost, and Priority fields.
5.
Click
. STP is enabled on the interface, and the device is updated.
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