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Spanning Tree Protocol
Configuring Multiple Spanning Tree
STEP 3
STEP 1
STEP 2
STEP 3
STEP 4
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
•
Designated Root Bridge ID—Displays the priority and MAC address of the
Root Bridge for the MST instance.
•
Root Port—Displays the root port of the selected instance.
•
Root Path Cost—Displays the root path cost of the selected instance.
•
Bridge ID—Displays the bridge priority and the MAC address of this switch
for the selected instance.
•
Remaining Hops—Displays the number of hops remaining to the next
destination.
Click Apply. The MST Instance is defined, and the Running Configuration is
updated.
Configuring MSTP Interface Settings
Use the MSTP Interface Settings page to configure the port MSTP settings for
every MST instance, and to view information that has currently been learned by
the protocol, such as the designated bridge per MST instance.
To configure the ports in an MSTP instance:
Click Spanning Tree > MSTP Interface Settings.
Enter the following information:
•
Instance equals To—Select the MSTP instance to be configured.
•
Interface Type equals to—Select whether to display the list of ports or
LAGs.
The MSTP parameters for the interfaces on the instance are displayed.
Select an interface, and click Edit.
Enter the following information:
•
Instance ID—Select the MSTP instance to be configured.
•
Interface—Select the interface to be defined.
•
Path Cost—Select User Defined to set the port contribution to the root path
cost, or select Use Default to use the default value. The root path cost is the
cost of the switch to the Root Bridge of the specified MST instance.
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