1-9 
To do...  Use the command…  Remarks 
Clear the statistics about flush 
messages
 
reset smart-link statistics  Available in user view 
 
Smart Link Configuration Examples 
Single Smart Link Group Configuration Example 
Network requirements 
As shown in Figure 1-2: 
z  Map VLANs 1 through 10, VLANs 11 through 20, and VLANs 21 through 30 to MSTI 0, MSTI 1, 
and MSTI 2 respectively.   
z  Traffic of VLANs 1 through 30 on Device C and Device D are dually uplinked to Device A.   
z  Configure Smart Link on the devices for dual uplink backup, using VLAN 1 (the default) for flush 
update. 
Figure 1-2 Single smart link group configuration 
Device A
Device E
Device DDevice C
Device B
G
E
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0
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1
G
E
1
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0
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2
G
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G
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GE
1
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GE1/0/3
GE1/0/1
GE1/0/2
GE1/0/3
GE1/0/1
GE1/0/2
Master link
Slave link
Smart link group
 
 
Configuration procedure 
1)  Configuration on Device C 
# Create VLANs 1 through 30, map VLANs 1 through 10, VLANs 11 through 20, and VLANs 21 
through 30 to MSTI 0, MSTI 1, and MSTI 2 respectively, and activate the MST region configuration.   
<DeviceC> system-view 
[DeviceC] vlan 1 to 30 
[DeviceC] stp region-configuration 
[DeviceC-mst-region] instance 0 vlan 1 to 10 
[DeviceC-mst-region] instance 1 vlan 11 to 20 
[DeviceC-mst-region] instance 2 vlan 21 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, and configure them as 
trunk ports that permit VLANs 1 through 30.