7-4
Monitor Link Configuration Example
Network requirements
As shown in
:
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 7-2
Network diagram for monitor link configuration
Device A
Device D
Device B
GE
1/0
/1
GE
1/0
/2
GE
1/0
/1
GE
1/0
/1
GE
1/0
/2
GE
1/0
/2
Device C
GE
1/0
/1
GE
1/0
/2
Configuration procedure
1) Configuration on Device C
# Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate MST region configuration.
<DeviceC> 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 1/0/1 and GigabitEthernet 1/0/2 separately, configure them as trunk
ports, and assign them to VLANs 1 through 30.
[DeviceC] interface gigabitethernet 1/0/1
[DeviceC-GigabitEthernet1/0/1] undo stp enable
[DeviceC-GigabitEthernet1/0/1] port link-type trunk
[DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30