H3C S5120-EI Series - Smart Link and CFD Collaboration Configuration Example

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Protected VLAN: Reference Instance 1
Member Role State Flush-count Last-flush-time
-----------------------------------------------------------------------------
GigabitEthernet1/0/1 MASTER ACTVIE 5 16:37:20 2013/02/21
GigabitEthernet1/0/2 SLAVE STANDBY 1 17:45:20 2013/02/21
Smart link group 2 information:
Device ID: 000f-e23d-5af0
Preemption mode: ROLE
Preemption delay: 1(s)
Control VLAN: 110
Protected VLAN: Reference Instance 2
Member Role State Flush-count Last-flush-time
-----------------------------------------------------------------------------
GigabitEthernet1/0/2 MASTER ACTVIE 5 16:37:20 2013/02/21
GigabitEthernet1/0/1 SLAVE STANDBY 1 17:45:20 2013/02/21
You can use the display smart-link flush command to display the flush messages received on a
device.
# Display the flush messages received on Device B.
[DeviceB] display smart-link flush
Received flush packets : 5
Receiving interface of the last flush packet : GigabitEthernet1/0/2
Receiving time of the last flush packet : 16:25:21 2013/02/21
Device ID of the last flush packet : 000f-e23d-5af0
Control VLAN of the last flush packet : 10
Smart Link and CFD collaboration configuration example
Network requirements
As shown in Figure 25, Device A, Device B, Device C, and Device D form a maintenance domain (MD)
of level 5. Device C is a smart link device, and Device A, Device B, and Device D are associated devices.
Traffic of VLANs 1 through 200 on Device C is dually uplinked to Device A by Device B and Device D.
Configure the CFD CC function for Smart Link, so that; Traffic of VLANs 1 through 100 is uplinked to
Device A by Device C through GigabitEthernet 1/0/1 (master port of smart link group 1). Traffic of
VLANs 101 through 200 is uplinked to Device A by Device C through GigabitEthernet 1/0/2 (master
port of smart link group 2). When the link between Device C and Device A fails, traffic is rapidly
switched to the slave port of each smart link group, and switched back to the master ports after the fault
is cleared.
For more information about CFD, see "Configuring CFD."