Table 232: Spanning Tree MST Summary Fields (continued)
Field
Description
Bridge Identifier
A unique value that is automatically generated based on the bridge priority
value of the MSTI and the base MAC address of the bridge. When electing the
root bridge for an MST instance, if the bridge priorities for multiple bridges are
equal, the bridge with the lowest MAC address is elected as the root bridge.
Time Since Topology Change
The amount of time that has passed since the topology of the MSTI has changed.
Designated Root
The bridge identifier of the root bridge for the MST instance. The identifier is
made up of the bridge priority and the base MAC address.
Root Path Cost
The path cost to the designated root for this MST instance. Traffic from a
connected device to the root bridge takes the least-cost path to the bridge. If the
value is 0, the cost is automatically calculated based on port speed.
Root Port
The port on the bridge with the least-cost path to the designated root for the
MST instance.
•
If you make any configuration changes, click
Submit
to apply the new settings to the switch.
•
Click
Refresh
to update the screen with most recent data.
MST Port Configuration
Use this page to view and configure the Multiple Spanning Tree (MST) settings for each interface on the
device. To configure MST settings for an interface and to view additional information about the
interface's role in the MST topology, first select the appropriate MST instance from the MST ID menu.
Then, select the interface to view or configure and click
Edit
.
To display the Spanning Tree MST Port Summary page, click
Switching
>
Spanning Tree
>
MST Port
in
the navigation menu.
Note
If no MST instances have been configured on the switch, the page displays a
No MSTs
Available
message and does not display the fields shown in
Table 233: Spanning Tree MST Port Configuration Fields
Field
Description
MST ID
The menu contains the ID of each MST instance that has been created on the
device.
Interface
associated with the rest of the data in the row. When
configuring MST settings for an interface, this field identifies the interface being
configured.
Configuring Switching Information
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