3Com 4510G Configuration Manual page 761

# Create smart link group 1 and configure all VLANs mapped to MSTIs 0 through 2 as the protected
VLANs.
[DeviceD] smart-link group 1
[DeviceD-smlk-group1] protected-vlan reference-instance 0 to 2
# Configure GigabitEthernet 1/0/1 as the master port and GigabitEthernet 1/0/2 as the slave port for
smart link group 1.
[DeviceD-smlk-group1] port gigabitethernet 1/0/1 master
[DeviceD-smlk-group1] port gigabitethernet 1/0/2 slave
# Enable flush message sending in smart link group 1.
[DeviceD-smlk-group1] flush enable
[DeviceD-smlk-group1] quit
3) Configuration on Device B
# Create VLANs 1 through 30.
<DeviceB> system-view
[DeviceB] vlan 1 to 30
# Configure GigabitEthernet 1/0/1, GigabitEthernet 1/0/2, and GigabitEthernet 1/0/3 as trunk ports that
permit VLANs 1 through 30 and enable flush message receiving on them.
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] port link-type trunk
[DeviceB-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30
[DeviceB-GigabitEthernet1/0/1] smart-link flush enable
[DeviceB-GigabitEthernet1/0/1] quit
[DeviceB] interface gigabitethernet 1/0/2
[DeviceB-GigabitEthernet1/0/2] port link-type trunk
[DeviceB-GigabitEthernet1/0/2] port trunk permit vlan 1 to 30
[DeviceB-GigabitEthernet1/0/2] smart-link flush enable
[DeviceB-GigabitEthernet1/0/2] quit
[DeviceB] interface gigabitethernet 1/0/3
[DeviceB-GigabitEthernet1/0/3] port link-type trunk
[DeviceB-GigabitEthernet1/0/3] port trunk permit vlan 1 to 30
[DeviceB-GigabitEthernet1/0/3] smart-link flush enable
[DeviceB-GigabitEthernet1/0/3] quit
4) Configuration on Device E
# Create VLANs 1 through 30.
<DeviceE> system-view
[DeviceE] vlan 1 to 30
# Configure GigabitEthernet 1/0/1, GigabitEthernet 1/0/2, and GigabitEthernet 1/0/3 as trunk ports that
permit VLANs 1 through 30 and enable flush message receiving on them.
[DeviceE] interface gigabitethernet 1/0/1
[DeviceE-GigabitEthernet1/0/1] port link-type trunk
[DeviceE-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30
[DeviceE-GigabitEthernet1/0/1] smart-link flush enable
[DeviceE-GigabitEthernet1/0/1] quit
[DeviceE] interface gigabitethernet 1/0/2
[DeviceE-GigabitEthernet1/0/2] port link-type trunk
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