3Com 4210G Series Configuration Manual page 722

[DeviceC] interface gigabitethernet 1/0/2
[DeviceC-GigabitEthernet1/0/2] undo stp enable
[DeviceC-GigabitEthernet1/0/2] port link-type trunk
[DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 1 to 200
[DeviceC-GigabitEthernet1/0/2] quit
# Create smart link group 1, and configure all VLANs mapped to MSTI 0 as the protected VLANs for
smart link group 1.
[DeviceC] smart-link group 1
[DeviceC-smlk-group1] protected-vlan reference-instance 0
# Configure GigabitEthernet 1/0/1 as the master port and GigabitEthernet 1/0/2 as the slave port for
smart link group 1.
[DeviceC-smlk-group1] port gigabitethernet 1/0/1 master
[DeviceC-smlk-group1] port gigabitethernet 1/0/2 slave
# Enable role preemption in smart link group 1, enable flush message sending, and configure VLAN 10
as the transmit control VLAN.
[DeviceC-smlk-group1] preemption mode role
[DeviceC-smlk-group-1] flush enable control-vlan 10
[DeviceC-smlk-group-1] quit
# Create smart link group 2, and configure all VLANs mapped to MSTI 2 as the protected VLANs for
smart link group 2.
[DeviceC] smart-link group 2
[DeviceC-smlk-group2] protected-vlan reference-instance 2
# Configure GigabitEthernet 1/0/1 as the slave port and GigabitEthernet 1/0/2 as the master port for
smart link group 2.
[DeviceC-smlk-group2] port gigabitethernet 1/0/2 master
[DeviceC-smlk-group2] port gigabitethernet 1/0/1 slave
# Enable role preemption in smart link group 2, enable flush message sending, and configure VLAN
101 as the transmit control VLAN.
[DeviceC-smlk-group2] preemption mode role
[DeviceC-smlk-group2] flush enable control-vlan 101
[DeviceC-smlk-group2] quit
2) Configuration on Device B
# Create VLAN 1 through VLAN 200.
<DeviceB> system-view
[DeviceB] vlan 1 to 200
# Configure GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 as trunk ports and assign them to VLANs
1 through 200; enable flush message receiving on GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2
and configure VLAN 10 and VLAN 101 as the receive control VLANs.
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] port link-type trunk
[DeviceB-GigabitEthernet1/0/1] port trunk permit vlan 1 to 200
[DeviceB-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 101
[DeviceB-GigabitEthernet1/0/1] quit
[DeviceB] interface gigabitethernet 1/0/2
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