3Com S7906E Configuration Manual page 2138

# Disable STP on GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 separately, and configure them as
trunk ports that permit VLANs 1 through 30.
[DeviceC] interface gigabitethernet 2/0/1
[DeviceC-GigabitEthernet2/0/1] undo stp enable
[DeviceC-GigabitEthernet2/0/1] port link-type trunk
[DeviceC-GigabitEthernet2/0/1] port trunk permit vlan 1 to 30
[DeviceC-GigabitEthernet2/0/1] quit
[DeviceC] interface gigabitethernet 2/0/2
[DeviceC-GigabitEthernet2/0/2] undo stp enable
[DeviceC-GigabitEthernet2/0/2] port link-type trunk
[DeviceC-GigabitEthernet2/0/2] port trunk permit vlan 1 to 30
[DeviceC-GigabitEthernet2/0/2] quit
# Create smart link group 1 and configure all VLANs mapped to MSTIs 0 through 2 as the protected
VLANs.
[DeviceC] smart-link group 1
[DeviceC-smlk-group1] protected-vlan reference-instance 0 to 2
# Configure GigabitEthernet 2/0/1 as the master port and GigabitEthernet 2/0/2 as the slave port for
smart link group 1.
[DeviceC-smlk-group1] port gigabitethernet 2/0/1 master
[DeviceC-smlk-group1] port gigabitethernet 2/0/2 slave
# Enable flush message sending in smart link group 1.
[DeviceC-smlk-group1] flush enable
[DeviceC-smlk-group1] quit
2) Configuration on Device D
# Create VLANs 1 through 30, map VLANs 1 through 10, VLANs 11 through 20, and VLANs 21 through
30 to MSTI 0, MSTI 1, and MSTI 2 respectively, and activate the MST region configuration.
<DeviceD> system-view
[DeviceD] vlan 1 to 30
[DeviceD] stp region-configuration
[DeviceD-mst-region] instance 0 vlan 1 to 10
[DeviceD-mst-region] instance 1 vlan 11 to 20
[DeviceD-mst-region] instance 2 vlan 21 to 30
[DeviceD-mst-region] active region-configuration
[DeviceD-mst-region] quit
# Disable STP on GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 separately, and configure them as
trunk ports that permit VLANs 1 through 30.
[DeviceD] interface gigabitethernet 2/0/1
[DeviceD-GigabitEthernet2/0/1] undo stp enable
[DeviceD-GigabitEthernet2/0/1] port link-type trunk
[DeviceD-GigabitEthernet2/0/1] port trunk permit vlan 1 to 30
[DeviceD-GigabitEthernet2/0/1] quit
[DeviceD] interface gigabitethernet 2/0/2
[DeviceD-GigabitEthernet2/0/2] undo stp enable
[DeviceD-GigabitEthernet2/0/2] port link-type trunk
[DeviceD-GigabitEthernet2/0/2] port trunk permit vlan 1 to 30
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