xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch Web UI Reference Guide
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Chapter 10 - OAM
CFM
Ethernet OAM
DULD Settings
Cable Diagnostics
CFM
Connectivity Fault Management (CFM) is defined by IEEE 802.1ag, which is a standard for detecting, isolating and
reporting connectivity faults in a network. CFM is an end-to-end per-service-instance Ethernet layer operation,
administration, and management (OAM) function. CFM functions include path discovery, fault detection, fault
verification and isolation, and fault notification as defined by 802.1ag.
Ethernet CFM frames have a special Ether Type (0x8902). All CFM messages are confined to a maintenance
domain per VLAN basis. There are different message types which are identified by unique Opcode of the CFM
frame payload.
CFM message types that are supported include; Continuity Check Message (CCM), Loopback Message and
Response (LBM, LBR) and Linktrace Message and Response (LTM and LTR).
CFM Settings
This window is used to configure the CFM settings on the Switch.
To view this window, click OAM > CFM > CFM Settings, as shown below:
Figure 10-1 CFM Settings window
The fields that can be configured are described below:
Parameter Description
CFM State
Used to enable or disable the CFM State.
All MPs Reply LTRs
Used to enable or disable the CFM maintenance point reply Linktrace Response on the
Switch.
MD
Enter the maintenance domain (MD) name you wish to create.
Level
Use the drop-down menu to select the maintenance domain level.
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