Cisco SPS208G User Manual page 192

Spanning Tree
STP Port Settings
STEP 2
STEP 3
STEP 4
SPS208G/SPS224G4/SPS2024 Service Provider Switches User Guide
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Learning
— Indicates that the port is in Learning mode. The port cannot
forward traffic, however it can learn new MAC addresses.
-
Forwarding
can forward traffic and learn new MAC addresses.
•
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 used for forwarding traffic.
•
Default Path Cost — When checked, returns the path cost to its default
value.
•
Root Guard — Enables or disables Root Guard, which prevents devices
outside the network core from being assigned the spanning tree root. The
possible field values are:
-
Enable
— Indicates that Root Guard is enabled on the selected port or
LAG.
-
Disable
— Indicates that Root Guard is disabled on the selected port or
LAG. This is the default value.
•
Priority — Priority value of the port. The priority value influences the port
choice when a bridge has two paths to the root. The priority value is
between 0-240. The priority value is provided in increments of 16.
•
Designated Bridge ID — DIsplays the bridge priority and the MAC Address
of the designated bridge.
•
Designated Port ID — DIsplays the designated port's priority and interface.
•
Designated Cost — DIsplays the cost of the designated port participating
in the STP topology. Ports with a lower cost are less likely to be blocked if
STP detects loops.
•
Forward Transitions — DIsplays the number of times the port has changed
from the Blocking state to Forwarding state.
Define the relevant fields.
Click Update. The interface STP configuration is defined and is displayed in the
STP Port Table.
Click Save Settings. The STP configuration is saved and the device is updated.
— Indicates that the port is in Forwarding mode. The port
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