User`s manual

User’s Manual 47
Region (section 3.1.1) with the same set of instances, and the same instance (on each bridge) with the
same set of VLANs. Also, note that RSTP treats each MSTI region as a single node, connecting all regions
to the Common Spanning Tree.
To use multiple spanning trees:
1. Set the spanning tree type to MSTP (STA Configuration, section 3.1.1).
2. Enter the spanning tree priority for the selected MST instance (MSTP VLAN Configuration).
3. Add the VLANs that will share this MSTI (MSTP VLAN Configuration).
Note: All VLANs are automatically added to the IST (Instance 0).
To ensure that the MSTI maintains connectivity across the network, you must configure a related set of
bridges with the same MSTI settings.
3.3.1 Attributes
MST Instance – Instance identifier of this spanning tree. (Default: 0)
Priority – The priority of a spanning tree instance. (Range: 0-61440 in steps of 4096; Options: 0, 4096, 8192,
12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440; Default:
32768)
VLANs in MST Instance – VLANs assigned this instance.
MST ID – Instance identifier to configure. (Range: 0-4094; Default: 0)
VLAN ID – VLAN to assign to this selected MST instance. (Range: 1-4094)
The other global attributes are described under section 9.1.1 Displaying Global Settings. The attributes
displayed by the CLI for individual interfaces are described under section 3.1.5 Displaying Interface
Settings.
Configuring Switch Using the Web or CLI
Web
Click Spanning Tree – MSTP, VLAN Configuration. Select an instance identifier from the list, set the
instance priority, and click Apply. To add the VLAN members to an MSTI instance, enter the instance
identifier, the VLAN identifier, and click Add.