TP-Link T2600G-18TSTL-SG3216 T2600G-18TSUN V1 Configuration Guide - Page 387

Configuring OAM Ethernet OAM OAM Link Events Frame Seconds Error Definition A Frame Seconds Error event occurs if the number of error frame seconds exceeds the threshold within a specific period of time. A second is called an error frame second if error frames occur in the second. Remote Failure Indication With Remote Failure Indication, an OAM entity can send the failure conditions of the link, such as disruption in traffic because of the device failure, to its peer through Information OAMPDUs. So the network administrator can get informed of the link faults and take action in time. The switch supports two kinds of failure conditions: Dying Gasp: An unrecoverable fault, such as power failure, occurs. Critical Event: Unspecified critical event occurs. Remote Loopback T2600G-18TS does not support this feature. With Remote Loopback, administrators can test the link performance like delay, jitter, and frame loss rate during installation or for troubleshooting. Figure 1-2 Remote Loopback Switch A Gi 1/0/1 (Active mode) Switch B Gi 1/0/1 (Passive mode) (1) Loopback Control OAMPDU (2) Infromation OAMPDU (3) Non-OAMPDUs from A to B (4) Non-OAMPDUs back from B to A (5) Loopback Control OAMPDU (6) Infromation OAMPDU As the above figure shows, the OAM connection has been established between the two entities. The OAM entity on Switch A is in active mode, and that on Switch B is in passive mode. Configuration Guide 357