HP MSR2000/3000/4000 Router Series Layer 2 - LAN Switching Command Reference

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Spanning tree commands
The commands in this chapter are supported only on the routers installed with Layer 2 LAN switching
interface modules. For more information about the interface modules, see HP MSR Router Series Interface
Module Guide.
active region-configuration
Use active region-configuration to activate your MST region configuration.
Syntax
active region-configuration
Views
MST region view
Predefined user roles
network-admin
Usage guidelines
When you configure MST region parameters, MSTP launches a new spanning tree calculation process
that might cause network topology instability. This is most likely to occur when you configure the
VLAN-to-instance mapping table. The launch occurs after the MST region parameters are activated with
the active region-configuration command or you enable the spanning tree feature with the stp global
enable command.
HP recommends that you use the check region-configuration command to determine whether the MST
region configurations to be activated are correct. Run this command only when they are correct.
Examples
# Map VLAN 2 to MSTI 1 and manually activate the MST region configuration.
<Sysname> system-view
[Sysname] stp region-configuration
[Sysname-mst-region] instance 1 vlan 2
[Sysname-mst-region] active region-configuration
Related commands
• check region-configuration
• instance
• region-name
• revision-level
• stp global enable
• vlan-mapping modulo