PLANET WGS3-24000 - Manual (Page 139)

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。 Port Forwarding State - The Forwarding State of this port.
。 Port Role - Each MST Bridge Port that is enabled is assigned a Port Role for each spanning tree. The port role will
be one of the following values: Root Port, Designated Port, Alternate Port, Backup Port, Master Port or Disabled
Port.
。 Designated Root - Root Bridge for the CST. It is made up using the bridge priority and the base MAC address of
the bridge.
。 Designated Cost - Path Cost offered to the LAN by the Designated Port.
。 Designated Bridge - Bridge Identifier of the bridge with the Designated Port. It is made up using the bridge priority
and the base MAC address of the bridge.
。 Designated Port - Port Identifier on the Designated Bridge that offers the lowest cost to the LAN. It is made up from
the port priority and the interface number of the port.
。 Topology Change Acknowledge - Identifies whether the next BPDU to be transmitted for this port would have the
topology change acknowledgement flag set. It is either "True" or "False".
。 Edge port - indicates whether the port is enabled as an edge port. It takes the value "Enabled" or "Disabled".
。 Point-to-point MAC - Derived value of the point-to-point status.
。 CST Regional Root - Bridge Identifier of the CST Regional Root. It is made up using the bridge priority and the
base MAC address of the bridge.
。 CST Path Cost - Path Cost to the CST Regional Root.
Command Buttons
。 Submit - Applies the new configuration and causes the changes to take effect. These changes will not be retained
across a power cycle unless a save configuration is performed.
。 Force - Clicking this button will force the port to send out 802.1w or 802.1d BPDUs.
。 Refresh - Refreshes the screen with most recent data.
4.3.8.5 Spanning Tree MST Port Configuration/Status
Selection Criteria
。 MST ID - Selects one MST instance from existing MST instances.
。 Slot.Port - Selects one of the physical or lag interfaces associated with VLANs associated with the selected MST
instance.
Configurable Data
。 Port Priority - The priority for a particular port within the selected MST instance. The port priority is set in multiples
of 16. For example if the priority is attempted to be set to any value between 0 and 15, it will be set to 0. If it is tried
to be set to any value between 16 and (2*16-1) it will be set to 16 and so on.
。 Port Path Cost - Set the Path Cost to a new value for the specified port in the selected MST instance. It takes a
value in the range of 1 to 200000000.
Non-Configurable Data
。 Auto-calculate Port Path Cost - Displays whether the path cost is automatically calculated (Enabled) or not