User`s manual

262 Asanté IntraCore 36000 Series
Command Mode
MST Configuration
Usage Guidelines
Use this command to group VLANs into spanning tree instances. MSTP generates a unique spanning tree
for each instance. This provides multiple pathways across the network, thereby balancing the traffic load,
preventing wide-scale disruption when a bridge node in a single instance fails, and allowing for faster
convergence of a new topology for the failed instance.
By default, all VLANs are assigned to the Internal Spanning Tree (MSTI 0) that connects all bridges and
LANs within the MST region. This switch supports up to 58 instances. You should try to group VLANs that
cover the same general area of your network. You must configure all bridges within the same MSTI Region
(see the name command) 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.
Example
Console(config-mstp)#mst 1 vlan 2-5
Console(config-mstp)#
16.114 name
This command configures the name for the multiple spanning tree region in which this switch is located. Use
the no form to clear the name.
Syntax Description
name name
name Name of the spanning tree.
Default
Switch’s MAC address
Command Mode
MST Configuration
Usage Guidelines
Use the MST region name and revision number (refer to the mst command) to designate a unique MST
region. A bridge (for example, spanning-tree compliant device such as this switch) can only belong to one
MST region and all bridges in the same region must be configured with the same MST instances.
Example
Console(config-mstp)#name R&D
Console(config-mstp)#