3Com Switch 7750 Configuration Guide Guide

258 CHAPTER 29: MSTP CONFIGURATION
# Activate the settings of the MST region.
[SW7750-mst-region] active region-configuration
# Specify Switch B as the root bridge of spanning tree instance 3.
[SW7750] stp instance 3 root primary
3 Configure Switch C.
# Enter MST region view.
<SW7750> system-view
[SW7750] stp region-configuration
# Configure the MST region.
[SW7750-mst-region] region-name example
[SW7750-mst-region] instance 1 vlan 10
[SW7750-mst-region] instance 3 vlan 30
[SW7750-mst-region] instance 4 vlan 40
[SW7750-mst-region] revision-level 0
# Activate the settings of the MST region.
[SW7750-mst-region] active region-configuration
# Specify Switch C as the root bridge of spanning tree instance 4.
[SW7750] stp instance 4 root primary
■ Configure Switch D.
# Enter MST region view.
<SW7750> system-view
[SW7750] stp region-configuration
# Configure the MST region.
[SW7750-mst-region] region-name example
[SW7750-mst-region] instance 1 vlan 10
[SW7750-mst-region] instance 3 vlan 30
[SW7750-mst-region] instance 4 vlan 40
[SW7750-mst-region] revision-level 0
# Activate the settings of the MST region.
[SW7750-mst-region] active region-configuration
BPDU Tunnel
Configuration
Example
Network requirements
■ The Switch 7750 Family operates as the access devices of the operator’s
network, that is, Switch C and Switch D in the network diagram.
■ The Switch 5500 Family operates as the access devices of the user’s network,
that is, Switch A and Switch B in the network diagram.