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S9300 and S9300E Series Switches Product Description

This document describes the positioning, characteristics, architecture, link features, service features, application scenarios, operation and maintenance functions, and technical specifications of the switch.
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Ethernet OAM

Ethernet OAM

Figure 3-8  Network diagram of Ethernet OAM deployed on a MAN

Ethernet Connectivity Fault Management (CFM) can be applied at the access aggregation layer on a MAN. MDs are classified according to the ISP managing the devices. All devices that are managed by the same ISP can be added to the same MD. MAs are assigned based on service types and are associated with VLANs. MEPs within an MA periodically exchange CCMs to test network connectivity. After Ethernet CFM detects a connectivity fault, alarms are generated and MAC ping and MAC trace commands are executed to verify and locate the fault.

EFM OAM is enabled on CEs and UPEs. EFM OAM can test link connectivity of user services by periodically exchanging OAMPDUs between CEs and NPEs. EFM OAM monitors link performance by detecting error frames, error codes, and error frame seconds on the link. This provides transmission services conforming to a Service Level Agreement (SLA). Additionally, EFM OAM provides alarms when faults occur.

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Updated: 2019-05-16

Document ID: EDOC1000027369

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