Protocols And Standards; Cfd Configuration Task List - HP 6125G Configuration Manual

Depending on whether the source MEP can receive a loopback reply message (LBR) from the target MEP,
the link state between the two can be verified. LBM frames and LBR frames are unicast frames.
LT
LT is similar to traceroute. It identifies the path between the source MEP and the target MP. This function
is implemented in the following way—the source MEP sends the linktrace messages (LTMs) to the target
MP. After receiving the messages, the target MP and the MIPs that the LTM frames pass send back
linktrace reply messages (LTRs) to the source MEP. Based on the reply messages, the source MEP can
identify the path to the target MP. LTM frames are multicast frames and LTRs are unicast frames.

Protocols and standards

IEEE 802.1ag, Virtual Bridged Local Area Networks Amendment 5: Connectivity Fault
•
Management

CFD configuration task list

For CFD to operate properly, design the network by performing the following tasks:
• Grade the MDs in the entire network and define the boundary of each MD.
Assign a name for each MD. Make sure the same MD has the same name on different devices.
•
Define the MA in each MD according to the VLAN you want to monitor.
•
• Assign a name for each MA. Make sure the same MA in the same MD has the same name on
different devices.
Determine the MEP list of each MA in each MD. Make sure devices in the same MA maintain the
•
same MEP list.
• At the edges of MD and MA, MEPs should be designed at the device port. MIPs can be designed
on devices or ports that are not at the edges.
Tasks
Configuring basic CFD
settings
Configuring CFD
functions
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.
•
Enabling CFD
Configuring the CFD protocol version
Creating a service instance
with the MD name
Configuring
service instances
Creating a service instance
without the MD name
Configuring MEPs
Configuring MIP generation rules
Configuring CC on MEPs
Configuring LB on MEPs
Configuring LT on MEPs
18
Remarks
Required.
Optional.
Required.
Perform either task.
Required.
Required.
Required.
Optional.
Optional.