7: Operations, Administration & Maintenance
Organization specific
A count of OAMPDUs received that contain the Organization Specific code. This counter is incremented on reception of a
valid frame, with:
• DestinationField equal to the reserved multicast address for slow protocols.
• LengthOrType field value equal to the reserved Type for slow protocols.
• A slow protocols subtype value equal to the subtype reserved for OAM.
• The OAMPDU code equals the Organization Specific code and is supported by the device.
Generalized nonresettable counter. This counter has a maximum increment rate of slow protocol frames (No more than
10 frames shall be transmitted in any one-second period).
Transmit
Unsupported codes
A count of OAMPDUs passed to the OAM subordinate sublayer for transmission that is not supported by the device. This
counter is incremented when a request service primitive is generated within the OAM sublayer with an OAM code for a
function that is not supported by the device.
Generalized nonresettable counter. This counter has a maximum increment rate of slow protocol frames (No more than
10 frames shall be transmitted in any one-second period).
Information
A count of OAMPDUs passed to the OAM subordinate sublayer for transmission that contains the OAM Information code.
This counter is incremented when a request service primitive is generated within the OAM sublayer with an OAMPDU
code indicating an Information OAMPDU.
Generalized nonresettable counter. This counter has a maximum increment rate of slow protocol frames (No more than
10 frames shall be transmitted in any one-second period).
Unique event
A count of OAMPDUs passed to the OAM subordinate sublayer for transmission that contains the Event Notification code.
This counter is incremented when a request service primitive is generated within the OAM sublayer.
• A Slow_Protocols subtype value equal to the subtype reserved for OAM.
• The OAMPDU code equals the Event Notification code.
• The Sequence Number field is not equal to the Sequence Number field of the last transmitted Event Notification
OAMPDU.
Generalized nonresettable counter. This counter has a maximum increment rate of slow protocol frames (No more than
10 frames shall be transmitted in any one-second period).
Duplicate event
A count of OAMPDUs passed to the OAM subordinate sublayer for transmission that contains the Event Notification code.
This counter is incremented when a request service primitive is generated within the OAM sublayer.
• The OAMPDU code equals the Event Notification code.
• The Sequence Number field is equal to the Sequence Number field of the last transmitted Event Notification
OAMPDU.