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Destination address: means the destination MAC address of the Ethernet

OAM packet.

Source address: Source MAC address of the Ethernet OAM packet

It is the MAC address of the transmitter terminal's port and also a unicast

MAC address.

Length/Type: Always adopts the Type encoding. The protocol type of the

Ethernet OAM packet is 0x8809.

Subtype：The subtype of the protocol for Ethernet OAM packets is 0x03.

Flags: a domain where the state of Ethernet OAM entity is shown

Code: a domain where the type of the OAMPDU packet is shown

Data/Pad: a domain including the OAMPDU data and pad values

FCS: checksum of the frame

CODE

05-FD

The Information OAM PDU packet is used to transmit the information about the

state of the OAM entity to the remote OAM entity to maintain the OAM

connection.

The Event Notification OAMPDU packet is used to monitor the link and report the

troubles occurred on the link between the local and remote OAM entities.

The Loopback control OAMPDU packet is mainly used to control the remote

loopback, including the state of the OAM loopback from the remote device. The

packet contains the information to enable or disable the loopback function. You

can open or shut down the remote loopback according to the contained

information.

1.2 OAM Configuration Task List

Enabling OAM on an interface

http://www.level1.com

Table 3 Type of the CODE domain

Information

Event Notification

Variable Request

Variable Response

Loopback Control

Reserved

Organization Specific

Reserved

OAM Configuration

OAMPDU

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