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Ethernet CFM at one side sends fault messages to Ethernet CFM at the other side.
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Ethernet CFMs at both sides perform bidirectional transmission of fault messages.
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Association between Ethernet CFM and Bidirectional Forwarding Detection (BFD)
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to BFD at the other side through the binding relationship. When BFD
detects a fault, BFD sends fault messages to the MA through the binding relationship.
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Ethernet CFM sends fault messages to BFD.
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BFD sends fault messages to Ethernet CFM.
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Ethernet CFM and BFD perform bidirectional transmission of fault messages.
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Association between Ethernet CFM and Multiprotocol Label Switching (MPLS) OAM
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to MPLS OAM through the binding relationship. When MPLS OAM
detects a fault, the OAM management module sends fault messages to the MA through the
binding relationship.
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Ethernet CFM sends fault messages to MPLS OAM.
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MPLS OAM sends fault messages to Ethernet CFM.
8.2.2 Configuring Basic Ethernet CFM
By configuring basic Ethernet CFM functions, you can implement end-to-end detection,
advertisement, verification, and location of connectivity faults.
Before You Start
Before configuring basic Ethernet CFM functions, familiarize yourself with the usage scenario,
complete the pre-configuration tasks, and obtain the required data.
Applicable Environment
CFM is mainly used to monitor the connectivity of end-to-end links or direct links.
As shown in
, the Layer 2 network is connected to the Layer 3 network through PE3.
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CFM can be deployed to monitor the link connectivity between Layer 2 network devices,
for example, between the CE and PE1 and between PE1 and PE2.
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CFM can be deployed to monitor the link connectivity between a Layer 2 network device
and a device connecting the Layer 2 network to the Layer 3 network, such as the link
connectivity between the CE and PE3 and between PE2 and PE3.
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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