Cisco 200 Series Administration Manual page 124

Configuring the Spanning Tree Protocol
Defining Spanning Tree Interface Settings
Cisco Small Business 200 Series Smart Switch Administration Guide
- Use Global Settings—Select to use the settings defined in the
Status and Global Settings
- Filtering—Filters BPDU packets when Spanning Tree is disabled on an
interface.
- 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.
• Port Role—Displays the behavior of the port.
• 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.
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