Configuring the Spanning Tree Protocol
Defining Spanning Tree Interface Settings
Cisco Small Business 200 Series Smart Switch Administration Guide
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-
Flooding
—Floods BPDU packets when Spanning Tree is disabled on an
interface.
•
Path Cost
—Set the port contribution to the root path cost or use the default
cost generated by the system.
•
Priority
—Set the priority value of the port. The priority value influences the
port choice when a bridge has two ports connected in a loop. The priority is
a value from 0 to 240, set in increments of 16.
•
Port State
—Displays the current STP state of a port.
-
Disabled
—STP is currently disabled on the port. The port forwards
traffic while learning MAC addresses.
-
Blocking
—The port is currently blocked, and cannot forward traffic (with
the exception of BPDU data) or learn MAC addresses.
-
Listening
—The port is in Listening mode. The port cannot forward traffic,
and cannot learn MAC addresses.
-
Learning
—The port is in Learning mode. The port cannot forward traffic,
but it can learn new MAC addresses.
-
Forwarding
—The port is in Forwarding mode. The port can forward
traffic and learn new MAC addresses.
•
Designated Bridge ID
—Displays the bridge priority and the MAC address
of the designated bridge.
•
Designated Port ID
—Displays the priority and interface of the selected
port.
•
Designated Cost
—Displays 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
—Displays the number of times the port has changed
from the
Blocking
state to
Forwarding
state.
•
Speed
—Displays the speed of the port.
•
LAG
—Displays the LAG to which the port belongs. If a port is a member of
a LAG, the LAG settings override the port settings.
STEP 4
Click
Apply
. The interface settings are written to the Running Configuration file.
