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162 | Chapter 3. Configuring Switching Information
ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual
The following table describes the CST Status information displayed on the screen.
Table 3-57.
Field Description
Interface Identify the physical or port channel interfaces
associated with VLANs associated with the CST.
Port ID The port identifier for the specified port within the
CST. It is made up from the port priority and the
interface number of the port.
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.
Port Up Time Since Counters Last Cleared Time since the counters were last cleared, displayed
in Days, Hours, Minutes, and Seconds.
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