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166 | Chapter 3. Configuring Switching Information
ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual
The following table describes the read-only MST port configuration information displayed on
the Spanning Tree CST Configuration page.
Table 3-59.
Field Description
Auto Calculated Port Path Cost Displays whether the path cost is automatically
calculated (Enabled) or not (Disabled). Path cost will
be calculated based on the link speed of the port if
the configured value for Port Path Cost is zero.
Port ID The port identifier for the specified port within the
selected MST instance. It is made up from the port
priority and the interface number of the port.
Port Uptime Since Last Clear Counters Time since the counters were last cleared, displayed
in Days, Hours, Minutes, and Seconds.
Port Mode Spanning Tree Protocol Administrative Mode
associated with the port or port channel. The
possible values are Enable or Disable.
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 selected MST instance. 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.
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