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290 Configuring Switch Information
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In addition, packets assigned to various VLANs are transmitted along different paths within
Multiple Spanning Trees Regions (MST regions). Regions are one or more interconnected Multiple
Spanning Tree bridges with identical MSTP configuration. In configuring an MST, the MST region
to which your device belongs is defined. A configuration consists of the name, revision and region
to which your device belongs.
To open the
MSTP Settings
page, click
Switch
→
Spanning Tree
→
MSTP Region Configuration
in the tree view.
Figure 7-24. MSTP Settings
The
MSTP Settings
page contains the following fields divided into two sections:
Region Name (1-32) —
Specifies a user-defined MST region name.
Revision (0-65535) —
Specifies unsigned 16-bit number that identifies the revision of the current
MST configuration. The revision number is required as part of the MST configuration.
Max Hops (1-40) —
Specifies the total number of hops that occur in a specific region before the
BPDU is discarded. Once the BPDU is discarded, the port information is aged out. The default
field value is 20.
IST Master —
Indicates the Internal Spanning Tree Master ID. The IST Master is the root of the
specified instance and its instance is 0.
Instance ID —
Specifies the ID of the spanning tree instance. The field range is 1-15.
Included VLANs
— Maps the selected VLANs to the selected instance. Every VLAN belongs to one
instance only.
Bridge Priority (0-61440) —
Specifies the device priority for the selected spanning tree instance.