User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configure Switching Information User Manual228
5. Use MST ID to select one MST instance from existing MST instances.
6. Use Interface to select one of the physical or port channel interfaces associated with VLANs
associated with the selected MST instance.
7. Use Port Priority to specify 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 is set to 0. If it is tried to be set to any value between 16
and (2*16-1) it is set to 16 and so on.
8. Use Port Path Cost to 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.
9. Click the Apply button.
Your settings are saved.
The following table describes the read-only MST port configuration information displayed on
the Spanning
Tree CST Configuration page.
Table 80. MST Port Status
Field Description
Auto Calculated Port Path Cost Displays whether the path cost is automatically calculated (Enable) or not
(Disable). Path cost is 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 is 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.