3Com 4200G 12-Port Configuration Manual page 689

Network diagram
Figure 2-3 Network diagram for Monitor Link configuration
GE1/0/10
Switch E
GE1/0/1
Switch C
GE1/0/2
GE1/0/3
GE1/0/1
GE1/0/2
Switch A
PC 1 PC 2
Configuration procedure
1) Enable Smart Link on Switch A and Switch B to implement link redundancy backup. Perform the
following configuration on Switch A. The configuration on Switch B is the same as on Switch A.
# Enter system view.
<switchA> system-view
# Enter Ethernet port view. Disable STP on GigabitEthernet1/0/1 and GigabitEthernet1/0/2.
[SwitchA] interface GigabitEthernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] stp disable
[SwitchA-GigabitEthernet1/0/1] quit
[SwitchA] interface GigabitEthernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] stp disable
# Return to system view.
[SwitchA-GigabitEthernet1/0/2] quit
# Create smart link group 1 and enter smart link group view.
[SwitchA] smart-link group 1
# Configure GigabitEthernet 1/0/1 as the master port of the smart link group and GigabitEthernet 1/0/2
as the slave port.
[SwitchA-smlk-group1] port GigabitEthernet 1/0/1 master
[SwitchA-smlk-group1] port GigabitEthernet 1/0/2 slave
# Configure to send flush messages in VLAN 1.
[SwitchA-smlk-group1] flush enable control-vlan 1
Server
GE1/0/11
GE1/0/1
Switch D
GE1/0/2
GE1/0/3
BLOCK GE1/0/1
GE1/0/2
Switch B
PC 3 PC 4
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