H3C Technologies H3C S7500E Series Switches - Manual (Page 130)

9-4
Monitor Link Configuration Example
Network requirements
As shown in Figure 9-2 :
z Device C is a smart link device, and Device A, Device B, and Device D are associated devices.
Traffic of VLANs 1 through 30 on Device C is dual-uplinked to Device A through a smart link
group.
z Implement dual uplink backup on Device C, and ensure that when the link between Device A and
Device B (or Device D) fails, Device C can sense the link fault and perform uplink switchover in
the smart link group.
For more information about Smart Link, see Smart Link Configuration in the High Availability
Configuration Guide.
Figure 9-2 Network diagram for monitor link configuration
Device A
Device D Device B
GE
2/0
/1
GE
2/0
/2
GE
2/0
/1 GE
2/0
/1
GE
2/0
/2 GE
2/0
/2
Device C
GE
2/0
/1
GE
2/0
/2
Configuration procedure
1) Configuration on Device C
# Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate MST region configuration.
system-view
[DeviceC] vlan 1 to 30
[DeviceC] stp region-configuration
[DeviceC-mst-region] instance 1 vlan 1 to 30
[DeviceC-mst-region] active region-configuration
[DeviceC-mst-region] quit
# Disable STP on GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 separately, configure them as trunk
ports, and assign them to 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