Ethernet OAMPDUs

Ethernet OAM operates on the data link layer. Ethernet OAM reports the link status by periodically exchanging OAMPDUs between devices, so that the administrator can effectively manage the network.

Ethernet OAMPDUs include the following types shown in Table 1.

Table 1: Functions of different types of OAMPDUs

OAMPDU type	Function
Information OAMPDU	Used for transmitting state information of an Ethernet OAM entity, including the information about the local device and remote devices, and customized information, to the remote Ethernet OAM entity, and maintaining OAM connections.
Event Notification OAMPDU	Used by link monitoring to notify the remote OAM entity when it detects problems on the link in between.
Loopback Control OAMPDU	Used for remote loopback control. By inserting the information used to enable/disable loopback to a loopback control OAMPDU, you can enable/disable loopback on a remote OAM entity.

NOTE:

Throughout this document, an Ethernet OAM-enabled port is called an Ethernet OAM entity or an OAM entity.

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