Associated Device Configuration Example; Displaying And Maintaining Smart Link; Smart Link Configuration Examples; Single Smart Link Group Configuration Example - H3C S5120-EI Series Operation Manual

Configure all the control VLANs to receive flush messages.
If no control VLAN is specified for processing flush messages, the device forwards the received
flush messages directly without processing them.
Make sure that the receive control VLAN is the same as the transmit control VLAN configured on
the Smart Link device. If they are not the same, the associated device will forward the received
flush messages directly without any processing.
Do not remove the control VLANs. Otherwise, flush messages cannot be sent properly.
Make sure that the control VLANs are existing VLANs, and you must assign the port capable of
receiving flush messages to the control VLANs.

Associated Device Configuration Example

Network requirements
Configure GigabitEthernet 1/0/1 to receive and process flush messages in VLAN 20.
Configuration procedure
<Sysname> system-view
[Sysname] vlan 20
[Sysname-vlan20] quit
[Sysname] interface gigabitethernet1/0/1
[Sysname-GigabitEthernet1/0/1] port link-type trunk
[Sysname-GigabitEthernet1/0/1] port trunk permit vlan 20
[Sysname-GigabitEthernet1/0/1] smart-link flush enable control-vlan 20

Displaying and Maintaining Smart Link

To do...
Display smart link group
information
Display information about the
received flush messages
Clear the statistics about flush
messages

Smart Link Configuration Examples

Single Smart Link Group Configuration Example

Network requirements
As shown in Figure
Configure Smart Link on the devices for uplink backup, adopting VLAN 1 (the default) for flush update.
Use the command...
display smart-link group
{ group-id | all }
display smart-link flush
reset smart-link statistics
1-2, both Device C and Device E are dually uplinked to Device A.
Available in any view
Available in any view
Available in user view
1-6
Remarks