H3C Technologies H3C S12500-X Series Switches - Manual (Page 27)

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Step Command Remarks
1. Find the path between a
source MEP and a target MEP.
cfd linktrace service-instance
instance-id mep mep-id { target-mac
mac-address | target-mep
target-mep-id } [ ttl ttl-value ] [ hw-only ]
Available in any view.
2. Enter system view. system-view N/A
3. Enable LT messages automatic
sending. cfd linktrace auto-detection [ size
size-value ]
By default, LT messages
automatic sending is disabled.
Displaying and maintaining CFD
Execute display commands in any view.
Purpose Command
Display LTR information received by a MEP.
display cfd linktrace-reply [ service-instance
instance-id [ mep mep-id ] ]
Display the content of the LTR messages received as
responses to the automatically sent LTMs. display cfd linktrace-reply auto-detection [ size
size-value ]
Display MD configuration information. display cfd md
Display the attribute and running information of the
MEPs.
display cfd mep mep-id service-instance instance-id
Display MEP list in a service instance. display cfd meplist [ service-instance instance-id
Display MP information.
display cfd mp [ interface interface-type
interface-number ]
Display information about a remote MEP.
display cfd remote-mep service-instance instance-id
mep mep-id
Display service instance configuration information. display cfd service-instance [ instance-id ]
Display CFD status. display cfd status
CFD configuration example
Network requirements
As shown in Figure 5 :
• 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. Assume that
the MAC addresses of Device A through Device E are 0010-FC00-6511, 0010-FC00-6512,
0010-FC00-6513, 0010-FC00-6514, and 0010-FC00-6515, respectively.
• MD_A has three edge ports: Ten-GigabitEthernet 1/0/1 on Device A, Ten-GigabitEthernet 1/0/3
on Device D, and Ten-GigabitEthernet 1/0/4 on Device E, and they are all inward-facing MEPs.
MD_B has two edge ports: Ten-GigabitEthernet 1/0/3 on Device B and Ten-GigabitEthernet
1/0/1 on Device D, and they are both outward-facing MEPs.