Figure 8-2
Schematic diagram of the CFM function
IP Core
CE
PE1
P
PE2
PE3
CFM
CFM
CFM
MEP
MIP
CFM
You need to ensure that the following conditions be met before implementing automatic end-
to-end connectivity detection on the Ethernet:
l
MDs are classified based on the ISP that manages the devices. All the devices that are
managed by a single ISP and enabled with CFM can be configured in an MD.
One default MD can be configured on each device, that it transmits high-level CCMs and
generates MIPs to reply LTR packets.
l
MAs are classified based on different SIs. An MA is associated with a VLAN. A VLAN
generally maps to an SI. When the MA is classified, fault detection in connectivity can be
carried out on the network where an SI is transmitted.
l
You need to determine the interfaces on which devices are located at the edge of the MA,
that is, to determine that MEPs must be configured on the interfaces on which devices.
When implementing automatic connectivity detection on directly connected links, you also need
to ensure that:
l
The devices at both ends must be configured in the same MA within an MD.
l
An MA can be either associated with a VLAN or not.
l
MEPs must be configured on the interfaces at both ends of the directly connected link.
Pre-configuration Tasks
None.
Data Preparation
To configure Ethernet CFM, you need the following data.
No.
Data
1
Name and level of an MD
2
(Optional) Name and level of a default MD
3
Name of an MA, ID of the VLAN associated with the MA
4
ID of a MEP, name of the interface on which the MEP resides, type of the MEP
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
8 Ethernet OAM Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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