Configuration example – H3C Technologies H3C WX3000 Series Unified Switches User Manual

Page 186

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Two devices belong to the same MST region only when they have the same MST region name, VLAN
mapping table, and MSTP revision level.

Configuration example

# Configure an MST region, with the name being “info”, the MSTP revision level being level 1, VLAN 2
through VLAN 10 being mapped to spanning tree instance 1, and VLAN 20 through VLAN 30 being
mapped to spanning tree 2.

<device> system-view

[device] stp region-configuration

[device-mst-region] region-name info

[device-mst-region] instance 1 vlan 2 to 10

[device-mst-region] instance 2 vlan 20 to 30

[device-mst-region] revision-level 1

[device-mst-region] active region-configuration

# Verify the above configuration.

[device-mst-region] check region-configuration

Admin configuration

Format selector :0

Region name :info

Revision level :1

Instance Vlans Mapped

0 11 to 19, 31 to 4094

1 1 to 10

2 20 to 30

Specifying the Current Device as a Root Bridge/Secondary Root Bridge

MSTP can automatically choose a device as a root bridge through calculation. You can also manually
specify the current device as a root bridge by using the corresponding commands.

Specify the current device as the root bridge of a spanning tree

Follow these steps to specify the current device as the root bridge of a spanning tree:

To do…

Use the command…

Remarks

Enter system view

system-view

Specify the current device as the root
bridge of a spanning tree

stp

[ instance instance-id ] root primary

[ bridge-diameter bridgenumber [ hello-time
centi-seconds

] ]

Required

Specify the current device as the secondary root bridge of a spanning tree

Follow these steps to specify the current device as the secondary root bridge of a spanning tree:

To do…

Use the command…

Remarks

Enter system view

system-view

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