DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 
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10.  OAM 
CFM 
Cable Diagnostics 
Ethernet OAM 
DDM 
 
CFM 
CFM Settings 
This window is used to display and configure the Connectivity Fault Management (CFM) settings. 
To view the following window, click OAM > CFM > CFM Settings, as shown below: 
 
Figure 10-1 CFM Settings Window 
 
The fields that can be configured in CFM Global Settings are described below: 
Parameter  Description 
CFM State 
Select to globally enable or disable the CFM feature here. 
AIS Trap State 
Select to enable or disable the Alarm Indication Signal (AIS) trap feature here. If 
the trap status of AIS is enabled, once an ETH-AIS event occurs or an ETH-AIS 
event clears, a trap will be sent out. 
LCK Trap State 
Select to enable or disable the Locked Signal (LCK) trap feature here. If the trap 
status of LCK is enabled, once an ETH-LCK event occurs or an ETH-LCK event 
clears, a trap will be sent out. 
All MPs Reply LTRs 
Select to enable or disable the all MPs Linktrace Reply (LTR) feature here. 
According to IEEE 802.1ag, a Bridge replies with one LTR to a Linktrace Message 
(LTM). This feature can make all MPs on an LTM’s forwarding path reply with 
LTRs, whether they are on a Bridge or not. 
Click the Apply button to accept the changes made. 
 
The fields that can be configured in CFM Domain Name Settings are described below: 
Parameter  Description 
Domain Name 
Enter the Maintenance Domain (MD) name here. This name can be up to 22 
characters long. The name does not allow spaces. Each MD has a unique name 
amongst all those used or available to a service provider or operator. It facilitates