Common problems and solutions of Fiber Media Converter

1.Power light does not shine Power failure 2.LOS lights must have the following breakdown: (A) has a broken cable from the engine room to the client; (B) SC pigtail is not plugged in Media Converter slots or has been disconnected. 3.Link light does not shine there may be the following: (A) Check whether the fiber optic lines breaker (B) Check whether the fiber line loss is too large, over a range of equipment receives (C) Check that the fiber optic interface is properly connected, local TX and RX distant connection, distant TX RX local connection. (D) Check the fiber optic connector is inserted into the device interface, Fiber patch cord type match with the device interface, device type and fiber match, whether the equipment transfer length matches the distance is intact. 4. Circuit Link light does not shine failure may be the following: (A) Check whether the cable disconnection (B) Check whether the connection type match: network cards and routers, and other devices use a crossover cable, switches, hubs, and other equipment using the straight line. (C) checking equipment transfer rate matches 5. Network packet loss the serious possible failure are as follows: (A) transceiver electrical port and network device interface, or both ends of the device interface duplex mode mismatch. (B) twisted-pair RJ-45 head detect (C) optical fiber connection jumper alignment device interface, pigtails and jumpers and coupler type matches. 6. Fiber Media Converter connect both ends can not communicate (A) Fibre reverse the TX and RX are connected to the optical fiber swap (B) RJ45 interface with external devices not connected properly (note that direct splicing) Optical fiber interface (ceramic ferrule) do not match, this failure is mainly reflected in the transceiver 100M with optical mutual control function, such as APC ferrule pigtails received PC ferrule on the transceiver can not communicate properly, but then non- the photoelectric interaction control transceiver has no effect. 7 when the pass off phenomenon (A) may be too large, for the optical path attenuation available optical power meter measuring the optical power of the receiving end, ,1-2dB in the vicinity of the scope of the receiving sensitivity range can be substantially determines the optical path failure (B) Switch connected to the fiber converter may be failure, the switch replaced PC, the two transceivers connect directly with the PC, both ends of the PING, Failure to appear when the pass off phenomenon basic judgment of switch failure (C) fiber converter may be failure at both ends of the converter then PC (not through a switch), both ends of the PING no problem, from one end to the other end of the transfer a large file (100M) above, observe it the speed, as the speed is very slow (less than 200M file transfer for more than 15 minutes) can be basic judgment transceiver failure. 8. Communication for some time after the crash, that can not communicate back to normal after re-starting This phenomenon is generally caused by a switch to switch on all data received CRC error detection and length check, check out the error packets will be discarded, the correct packet will be forwarded out. Some of the process error packets can not be detected in the CRC error detection and length checksum this packet forwarding process will not be sent out, it will not be discarded, they will accumulate in the dynamic cache (buffer), can never be sent accumulation in wait until the buffer is full, it will cause the switch to crash the phenomenon. Because transceiver restart or re-starting switch can make communication back to normal, so users often think that the problem of the transceiver. 9. Fiber media converter test methods in order to find out the cause of the malfunction (A) the proximal end of test: Both ends of the computer on the PING PING through that fiber media converters. Proximal test is not a failure of communication can be judged for fiber optic transceivers. (B) Remote Test: Both ends of the computer whether normal and fiber media converters transmit and receive power whether the allowed range of PING, PING not General must check the optical path connection. PING the General Clauses prove optical path connection. The problem is to determine fault in the switch. (C) Remote test to determine the point of failure: First one end of the switch, both ends of the PING if no fault can be judged by the fault of the other switches.