Optical fiber transceiver is a flexible and effective photoelectric conversion device that plays an important role in multi-protocol photoelectric hybrid LAN. Now, in order to better detect and eliminate link faults, some optical fiber transceivers have link failover (LFP) and remote fault (FEF) alarm functions.
Before we first introduce the link failover (LFP) and remote fault (FEF) alarm functions of fiber transceivers, it is necessary to understand the role of fiber transceivers in the LAN.
The optical fiber transceiver has both electrical ports and optical ports, which is commonly used to connect the optical port switch and the electrical port switch, so as to realize the photoelectric conversion between the two devices. Details are as follows:
Admittedly, the main function of the optical fiber transceiver is to conduct photoelectric conversion, which is a bridge between two devices that cannot communicate directly, but its function is far more than that.
When the fiber transceiver is used in pairs, the cables used include at least two fiber optic cables and two cables (as shown below). It is the complexity of this cabling that leads to the link failover (LFP) and distal fault (FEF) alarm functions of the fiber transceiver.
Link failover (LFP) refers to two connected communication devices (transceiver, switch, router, etc.), one (proximal) link fault, the link fault can be transmitted to another (remote) equipment for example, two fiber transceivers A and B, A transceiver port link fault, the transceiver port fault to the light port, stop port data; B transceiver cannot receive A data, then know A link fault, terminal B will stop the light port and port data. Link failover (LFP) alarm function enables network administrators to quickly know and deal with network faults and reduce the loss caused by network faults
Remote fault (FEF) refers to the B optical fiber transceiver when the optical port of A transceiver stops sending data to the optical port of the B transceiver. If the other cable works properly, the optical port of B transceiver continues to send data to the optical port of A transceiver, causing network failure. The distal fault (FEF) alarm function reflects this problem.
The above is the explanation of transceiver LFP and FEF functions brought by Shenzhen HDV Phoelectronic Technology Co., LTD. Our related network equipment has ONU series, OLT series, optical module series, welcome to further consultation.