Ethernet Oam Implementation - H3C LS-3100-52P-OVS-H3 Operation Manual

Figure 1-1 Formats of different types of Ethernet OAMPDUs
The fields in an OAMPDU are described as follows:
Table 1-1 Description of the fields in an OAMPDU
Field
Dest addr
Source addr
Type
Subtype
Flags
Code
Table 1-2 shows the function of the three types of OAMPDUs.
Table 1-2 Functions of different types of OAMPDUs
OAMPDU type
Information
OAMPDU
Event Notification
OAMPDU
Loopback Control
OAMPDU

Ethernet OAM Implementation

This section describes the working procedures of Ethernet OAM.
Destination MAC address of the Ethernet OAMPDU.
It is a slow protocol multicast address 0180c2000002.
Source MAC address of the Ethernet OAMPDU.
It is the bridge MAC address of the sending side and is a unicast MAC address.
Type of the encapsulated protocol in the Ethernet OAMPDU.
The value is 0x8809.
The specific protocol being encapsulated in the Ethernet OAMPDU.
The value is 0x03.
Status information of an Ethernet OAM entity.
Type of the Ethernet 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
Used by link monitoring to notify the remote OAM entity when it detects
problems on the link in between.
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.
Description
Function
1-2