3Com 4210G Series, Configuration Manual

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6-10
Displaying and Maintaining CFD
To do... Use the command... Remarks
Display CFD status
display cfd status
Available in any view
Display MD configuration
information
display cfd md
Available in any view
Display MA configuration
information
display cfd ma
[ [
ma-name
]
md md-name
]
Available in any view
Display service instance
configuration information
display cfd service-instance
[
instance-id
]
Available in any view
Display MP information
display cfd mp
[
interface
interface-type
interface-number
]
Available in any view
Display the attribute and
running information of the
MEPs
display cfd mep mep-id
service-instance instance-id
Available in any view
Display LTR information
received by a MEP
display cfd linktrace-reply
[
service-instance instance-id
[
mep mep-id
] ]
Available in any view
Display the information of a
remote MEP
display cfd remote-mep
service-instance instance-id
mep mep-id
Available in any view
Display the content of the LTR
that responds to LTM
messages
display cfd linktrace-reply
auto-detection
[
size
size-value
]
Available in any view
CFD Configuration Examples
Configuring Service Instance
Network requirements
As shown in Figure 6-5 , there are five devices in the MDs. Each device has four ports belonging to
VLAN 100. The light blue square frame and the blue one specify two different MDs.
z
Two MDs, MD_A (indicated by the light blue square frame, with level 5) and MD_B (indicated by
the blue square frame, with level 3)) are designed in this network.
z
Define the edge ports of each MD, and define the MD of each port.
z
The VLAN IDs of each MA in the two MDs are all 100.
According to the network diagram as shown in Figure 6-5 , You should perform the following
configurations:
z
Configure MD_A on Device A and Device E
z
Configure MD_B on Device C
z
Configure MD_A and MD_B on Device B and Device D
z
Configure an MA in each MD
z
Configure a service instance for each MA