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Chapter 5: Using the Web-based Utility for Configuration
Spanning Tree Tab - MSTP Instance Settings
WebView Switches
Spanning Tree Tab - MSTP Instance Settings
MSTP operation maps VLANs into STP instances. Packets assigned to various VLANs are transmitted along
different paths within Multiple Spanning Trees Regions (MST Regions). Regions are one or more Multiple
Spanning Tree bridges by which frames can be transmitted. In configuring MST, the MST region to which the
device belongs is defined. A configuration consists of the name, revision, and region to which the device belongs.
Network Administrators can define MSTP Instances settings using the MSTP Instance Settings screen.
Instance ID. Defines the VLAN group to which the interface is assigned.
Included VLAN. Maps the selected VLAN to the selected instance. Each VLAN belongs to one instance.
Bridge Priority. Specifies the selected spanning tree instance device priority. The field range is 0-61440.
Designated Root Bridge ID. Indicates the ID of the bridge with the lowest path cost to the instance ID.
Root Port. Indicates the selected instance’s root port.
Root Path Cost. Indicates the selected instance’s path cost.
Bridge ID. Indicates the bridge ID of the selected instance.
Remaining Hops. Indicates the number of hops remaining to the next destination.
Spanning Tree Tab - MSTP Interface Settings
Network Administrators can assign MSTP Interface settings using the MSTP Interface Settings screen.
The MSTP Interface Settings screen contains the following fields:
Instance ID. Lists the MSTP instances configured on the device. Possible field range is 0-15.
Interface. Displays the interface for which the MSTP settings are displayed. The possible field values are:
• Port. Specifies the port for which the MSTP settings are displayed.
• LAG. Specifies the LAG for which the MSTP settings are displayed.
Port State. Indicates whether the port is enabled for the specific instance.
Type. Indicates if the port is a point-to-point port, or a port connected to a hub. The possible field values are:
Figure 5-50: Spanning Tree - MSTP Instance Settings
Figure 5-51: Spanning Tree - MSTP Interface Settings