Stp Root Primary; Stp Root Secondary - H3C MSR Series Command Reference Manual

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The MSTP revision level is 0.
After you enter MST region view, you can configure the MST region-related parameters, including
the region name, VLAN-to-instance mappings, and revision level.
Examples
# Enter MST region view.
<Sysname> system-view
[Sysname] stp region-configuration
[Sysname-mst-region]

stp root primary

Use stp root primary to configure the device as the root bridge.
Use undo stp root to restore the default.
Syntax
stp [ instance instance-id ] root primary
undo stp [ instance instance-id ] root
Default
A device is not a root bridge.
Views
System view
Default command level
2: System level
Parameters
instance instance-id: Configures the device as the root bridge in a particular MSTI. The minimum
value of instance-id is 0, representing the CIST, and the maximum value of instance-id is 15.
Usage guidelines
To set an MSTP device as the root bridge in a specific MSTI, use this command with the MSTI
specified.
Once you specify the device as the root bridge, you cannot change the priority of the device.
Examples
# In MSTP mode, specify the device as the root bridge of MSTI 1.
<Sysname> system-view
[Sysname] stp instance 1 root primary
Related commands
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stp priority
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stp root secondary

stp root secondary
Use stp root secondary to configure the device as a secondary root bridge.
Use undo stp root to restore the default.
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