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Enabling CFD
Enable CFD before you perform other configuration tasks.
To enable CFD on a device:
Step
1.
Enter system view.
2.
Enable CFD.
Configuring the CFD protocol version
Three CFD protocol versions are available: IEEE 802.1ag draft5.2 version, IEEE 802.1ag draft5.2
interim version, and IEEE 802.1ag standard version.
Devices in the same MD must use the same CFD protocol version. Otherwise, they cannot exchange
CFD protocol packets.
If an MD is created by using the cfd md command or automatically generated by using the cfd
service-instance maid format command on a device, you cannot switch between the standard
version and draft5.2 version (or draft5.2 interim version). However, you can switch between the
draft5.2 version and draft5.2 interim version. This restriction does not apply to the device without an
MD configured.
To configure the CFD protocol version:
Step
1.
Enter system view.
2.
Configure the CFD protocol
version.
Configuring service instances
Before configuring the MEPs and MIPs, first configure service instances. A service instance is a set
of service access points (SAPs), and belongs to an MA in an MD.
A service instance is indicated by an integer to represent an MA in an MD. The MD and MA define the
level and VLAN attribute of the messages handled by the MPs in a service instance.
Service instances fall into two types:
•
Service instance with the MD name, which takes effect in any version of CFD.
•
Service instance without the MD name, which takes effect in only CFD IEEE 802.1ag.
You can create either type of service instance as needed.
Creating a service instance with the MD name
To create a service instance with the MD name, create the MD and MA for the service instance first.
To configure a service instance with the MD name:
Step
1.
Enter system view.
Command
system-view
cfd enable
Command
system-view
cfd version { draft5 | draft5-plus
| standard }
Command
system-view
20
Remarks
N/A
By default, CFD is disabled.
Remarks
N/A
Optional.
By default, CFD uses the
standard version of IEEE
802.1ag.
Remarks
N/A
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Troubleshooting
