Table 11. Oam Active And Passive Mode Behaviors - Allied Telesis AT-CM20x Series Reference Manual

Table 11 lists the OAM Active and OAM Passive mode behaviors.

Table 11. OAM Active and Passive Mode Behaviors

Capability
Initiates OAM Discovery process
Reacts to OAM Discovery process initiation
Required to send Information OAMPDUs
Permitted to send Event Notification OAMPDUs
Permitted to send Variable Request OAMPDUs
Permitted to send Variable Response OAMPDUs
Permitted to send Loopback Control OAMPDUs
Reacts to Loopback Control OAMPDUs
Permitted to send Organization Specific
OAMPDUs
* Requires the peer DTE to be in Active mode.
OAM Loopback
OAM provides a data link layer frame-level loopback mode, which is
controlled remotely. Loopback is used to test the performance of a link.
Statistics from both the local and remote station can be queried and
compared at any time while the remote station is in OAM loopback mode.
These queries can take place before, during, or after loopback frames
have been sent to the remote station. In addition, an implementation may
analyze loopback frames to determine additional information about the
health of the link (in example, determine which frames are being dropped
due to link errors).
The Converteon™ line cards feature one or two sets of DIP switches,
depending on the model. The DIP switches are Diagnostic Mode and Port
Configuration DIP switches.
The Diagnostic Mode DIP switches are used to configure the
diagnostic mode positions of the line card.
The Port Configuration DIP switches are used to manually configure
the operating characteristics of the twisted pair port.
Converteon Media Converter Line Cards Reference Guide
Active
DTE
Yes
Yes
Yes
Yes
Yes
Yes*
Yes
Yes*
Yes
Passive
DTE
No
Yes
Yes
Yes
No
Yes
No
Yes
Yes
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