3Com 4510G Configuration Manual page 771

# Enable flush message receiving on GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 separately.
[DeviceD] interface gigabitethernet 1/0/1
[DeviceD-GigabitEthernet1/0/1] smart-link flush enable
[DeviceD-GigabitEthernet1/0/1] quit
[DeviceD] interface gigabitethernet 1/0/2
[DeviceD-GigabitEthernet1/0/2] smart-link flush enable
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