PLANET XGS3-24042 - Manual (Page 119)

14-4
4. Remote loopback testing
Remote loopback testing is available only after an Ethernet OAM connection is established. With remote
loopback enabled, operating Ethernet OAM entity in active mode issues remote loopback requests and the
peer responds to them. If the peer operates in loopback mode, it returns all packets except Ethernet
OAMPDUs to the senders along the original paths. Performing remote loopback testing periodically helps to
detect network faults in time. Furthermore, performing remote loopback testing by network segments helps to
locate network faults. Note: The communication will not be processed normally in remote loopback mode.
Typical EFM OAM application topology is in the following, it is used for point-to-point link and emulational
IEEE 802.3 point-to-point link. Device enables EFM OAM through point-to-point connection to monitor the link
fault in the First Mile with Ethernet access. For user, the connection between user to telecommunication is
“the First Mile”, for service provider, it is “the Last Mile”.
Customer Service Provider Customer
CE PE
802.1ah OAMPDU
802.3ah
Ethernet in
the First Mile
Figure 14-2 Typical OAM application topology
14.2 EFM OAM Configuration
EFM OAM configuration task list
1. Enable EFM OAM function of port
2. Configure link monitor
3. Configure remote failure
4. Enable EFM OAM loopback of port
Note: it needs to enable OAM first when configuring OAM parameters.
1. Enable EFM OAM function of port
Command Explanation
Port mode