H3C Technologies H3C S12500 Series Switches - Manual (Page 41)

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Task Command Remarks
Display the TST result on the
specified MEP.
display cfd tst [ service-instance
instance-id [ mep mep-id ] ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.
Clear the TST result on the
specified MEP. reset cfd tst [ service-instance
instance-id [ mep mep-id ] ]
Available in user view.
CFD configuration example
IMPORTANT:
By default, Ethernet, VLAN, and aggregate interfaces are down. Before configuring these interfaces, bring
them up by using the undo shutdown command.
Network requirements
As shown in Figure 6 :
• The network comprises five devices and is divided into two MDs: MD_A (level 5) and MD_B (level
3). All ports belong to VLAN 100, and the MAs in the two MDs all serve VLAN 100.
• MD_A has three edge ports: GigabitEthernet 3/0/1 on Device A, GigabitEthernet 3/0/3 on
Device D, and GigabitEthernet 3/0/4 on Device E, and they are all inward-facing MEPs. MD_B has
two edge ports: GigabitEthernet 3/0/3 on Device B and GigabitEthernet 3/0/1 on Device D, and
they are both outward-facing MEPs.
• In MD_A, Device B is designed to have MIPs when its port is configured with low level MEPs. Port
GigabitEthernet 3/0/3 is configured with MEPs of MD_B, and the MIPs of MD_A can be
configured on this port. You should configure the MIP generation rule of MD_A as explicit.
• The MIPs of MD_B are designed on Device C, and are configured on all ports. You should configure
the MIP generation rule as default.
• Configure CC to monitor the connectivity among all the MEPs in MD_A and MD_B. Configure to
use LB to locate link faults, and use the AIS function to suppress the error alarms reported.
• After the status information of the entire network is obtained, use LT and TST to detect link faults.