3Com MSR 30, MSR 50 stp region-configuration, stp root primary

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stp region-configuration
Syntax stp region-configuration
undo stp region-configuration
View System view
Parameters None
Description Use the stp region-configuration command to enter MST region view.
Use the undo stp region-configuration command to restore the default MST
region configurations.
By default, the default settings are used for all the three MST region parameters.
Namely, the device’s MST region name is the device’s MAC address, all VLANs are
mapped to the CIST, and the MSTP revision level is 0.
After you enter MST region view, you can configure the parameters related the
MST region, including the region name, VLAN-to-instance mapping and revision
level.
Examples # Enter MST region view.
<Sysname> system-view
[Sysname] stp region-configuration
[Sysname-mst-region]
stp root primary
Syntax stp [ instance instance-id ] root primary
undo stp [ instance instance-id ] root
View System view
Parameters instance instance-id: MST instance ID, in the range of 0 to 15. MST instance 0
represents the CIST.
Description Use the stp root primary command to specify the current device as the root
bridge of the specified MST instance.
Use the undo stp root command to remove the current device as the root bridge
of the specified MST instance.
By default, a device is not a root bridge.
Note that: