R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

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Typically, a port blocked by the spanning tree feature 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.
For more information about the spanning tree feature, see Layer 2—LAN Switching Configuration
Guide.
Configuring basic CFD settings
Enabling CFD
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enable CFD.
cfd enable
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 the same MD must use the same CFD
protocol version. Otherwise, they cannot exchange CFD protocol packets.
To configure the CFD protocol version:
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Configure the CFD protocol
version.
cfd version { draft5 | draft5-plus |
standard }
Optional.
By default, CFD uses the standard
version of IEEE 802.1ag.
Configuring service instances
Before configuring the MEPs and MIPs, you must 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.
To create a service instance, create the MD and MA for the service instance first.
To configure a service instance:
Step
Command
Remarks
1. Enter system view.
system-view
N/A