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Configuration procedure
1. Configure a VLAN and assign ports to it.
On each device shown in Figure 8, create VLAN 100, and assign ports GigabitEthernet 1/0/1 through
GigabitEthernet 1/0/4 to VLAN 100.
2. Enable CFD.
# Enable CFD on Device A.
<DeviceA> system-view
[DeviceA] cfd enable
Enable CFD on Device B through Device E using the same method.
3. Configure service instances.
# Create MD_A (level 5) on Device A, create MA_A, which serves VLAN 100, in MD_A, and create
service instance 1 for MD_A and MA_A.
[DeviceA] cfd md MD_A level 5
[DeviceA] cfd ma MA_A md MD_A vlan 100
[DeviceA] cfd service-instance 1 md MD_A ma MA_A
Configure Device E as you configure Device A.
# Create MD_A (level 5) on Device B, create MA_A, which serves VLAN 100, in MD_A, and then create
service instance 1 for MD_A and MA_A. In addition, create MD_B (level 3), create MA_B, which serves
VLAN 100, in MD_B, and then create service instance 2 for MD_B and MA_B.
[DeviceB] cfd md MD_A level 5
[DeviceB] cfd ma MA_A md MD_A vlan 100
[DeviceB] cfd service-instance 1 md MD_A ma MA_A
[DeviceB] cfd md MD_B level 3
[DeviceB] cfd ma MA_B md MD_B vlan 100
[DeviceB] cfd service-instance 2 md MD_B ma MA_B
Configure Device D as you configure Device B.
# Create MD_B (level 3) on Device C, create MA_B, which serves VLAN 100, in MD_B, and then create
service instance 2 for MD_B and MA_B.
[DeviceC] cfd md MD_B level 3
[DeviceC] cfd ma MA_B md MD_B vlan 100
[DeviceC] cfd service-instance 2 md MD_B ma MA_B
4. Configure MEPs.
# On Device A, configure a MEP list in service instance 1. Create and enable inward-facing MEP 1001 in
service instance 1 on GigabitEthernet 1/0/1.
[DeviceA] cfd meplist 1001 4002 5001 service-instance 1
[DeviceA] interface gigabitethernet 1/0/1
[DeviceA-GigabitEthernet1/0/1] cfd mep 1001 service-instance 1 inbound
[DeviceA-GigabitEthernet1/0/1] cfd mep service-instance 1 mep 1001 enable
[DeviceA-GigabitEthernet1/0/1] quit
# On Device B, configure a MEP list in service instances 1 and 2, respectively. Create and enable
outward-facing MEP 2001 in service instance 2 on GigabitEthernet 1/0/3.
[DeviceB] cfd meplist 1001 4002 5001 service-instance 1
[DeviceB] cfd meplist 2001 4001 service-instance 2
[DeviceB] interface gigabitethernet 1/0/3
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