H3C Technologies H3C S10500 Series Switches - Manual (Page 30)

21
Tasks Remarks
Configuring LB on MEPs Optional
functions
Configuring LT on MEPs Optional
NOTE:
Typically, a port blocked by STP cannot receive or send CFD messages except in the following cases:
• The port is configured as an outward-facing MEP.
• The port is configured as a MIP or inward-facing MEP, which can still receive and send CFD messages
except CCM messages.
Configuring basic CFD settings
Enabling CFD
Enable CFD on all concerned devices.
Follow these steps to enable CFD on a device:
To do... Use the command... Remarks
Enter system view system-view —
Enable CFD cfd enable
Required
CFD is disabled by default.
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 a same MD must use the same CFD protocol
version. Otherwise, they cannot exchange CFD protocol packets.
Follow these steps to configure the CFD protocol version:
To do... Use the command... Remarks
Enter system view system-view —
Configure the CFD protocol
version cfd version { draft5 | draft5-plus |
standard }
Optional
By default, CFD uses the standard
version of IEEE 802.1ag.
NOTE:
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 and
non-standard versions (draft5.2 version and 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.