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Defining STP Port Settings
The
STP Port Settings
page contains fields for assigning STP properties to individual ports. To open the
STP
Port Settings
page, click
Switch
→
Spanning Tree
→
Port Settings
in the tree view.
Figure 1-31. STP Port Settings
Port
— Port on which STP is enabled.
STP
— Enables or disables STP on the port.
Fast Lin k
— When selected, enables Fast Link mode for the port. If Fast Link mode is enabled for a port, the
Port State
is automatically placed in the
Forwarding
state
when the port link is up. Fast Link mode optimizes
the time it takes for the STP protocol to converge. STP convergence can take 30-60 seconds in large networks.
Root Guard
—
When checked, prevents devices outside the network core from being assigned the spanning tree
root.
Port State
— The current port STP state. If enabled, the port state determines what forwarding action is taken
on traffic. Possible port states are:
Disabled
— The port link is currently down.
Blocking
— The port is currently blocked and cannot be used to forward traffic or learn MAC addresses.
Blocking is displayed when Classic STP is enabled.
Listening
— The port is currently in the listening mode. The port cannot forward traffic nor can it learn
MAC addresses.