High Quality Industrial Caster
High Quality Series light duty industrial casters
For the high level market. Price higher, but it's valued.
Ningbo Mywin Caster Co., Ltd. , https://www.mywin-caster.com
1, network packet loss seriously <br> <br> possible faults are as follows:
(1) The transceiver's electrical port does not match the network device's interface, or the duplex mode of the device's interfaces at both ends does not match.
(2) There is a problem with the twisted pair and the RJ-45 head for detection (3) Fiber connection problems, whether the jumper is aligned with the device interface, and whether the pigtail is matched with the jumper and coupler type.
2. The two ends of the 10G fiber optic transceiver cannot communicate with each other (1) The fiber is reversed, the fiber connected to TX and RX is reversed, and (2) the RJ45 interface is not correctly connected to the external device (note that straight and twisted)
The optical fiber interface (ceramic ferrule) does not match. This fault is mainly reflected in the 100M transceiver with photoelectricity control function. If the tail fiber of the APC ferrule is connected to the transceiver of the PC ferrule, it will not be able to communicate normally. Photoelectric mutual control transceiver has no effect.
3, when the phenomenon of time-off (1) may be too much attenuation of the optical path, this time the optical power meter can be used to measure the optical power at the receiving end, if in the vicinity of the receiver sensitivity range, within the range of 1-2dB can be basically judged as optical path failure (2 ) The switch connected to the transceiver may be faulty. At this time, the switch is replaced with a PC. That is, the two transceivers are directly connected to the PC. The two ends are PING. If not, the switch-off phenomenon can be basically judged as the switch failure (3) ) It may be a transceiver failure. At this time, you can connect the two ends of the transceiver to the PC (not through the switch). After both ends respond to PING, transfer one large file (100M) from one end to the other and observe the speed. , If the speed is very slow (more than 15 minutes of file transfer below 200M), it can be basically judged as a transceiver failure.
4, Power light does not shine <br> <br> power failure.
5, Link does not light <br> <br> fault the following is possible:
(a) Check whether the optical fiber line is open circuit (b) Check whether the optical fiber line is excessively worn out and exceed the device receiving range (c) Check whether the optical fiber interface is connected correctly, the local TX is connected to the remote RX, and the remote TX is connected to the local RX .
(d) Check if the fiber optic connector is properly inserted into the device interface, whether the jumper type matches the device interface, whether the device type matches the fiber, and whether the device transfer length matches the distance.
6, the circuit does not light <br> <br> Link Failure may be the following:
(a) Check whether the network cable is disconnected (b) Check whether the connection type matches: The equipment such as the network card and the router use the crossover cable.
Switches, hubs and other devices use straight-through cables.
(c) Check whether the device transmission rate matches
7, Gigabit transceiver connection problems <br> <br> If you find a problem transceiver connection, please test the following methods in order to find out the cause of the malfunction.
(a) The near-end test at both ends of the computer to PING, if you can PING通 then prove that there is no problem with the fiber transceiver. If the near-end test fails to communicate, the fiber transceiver can be judged to be faulty.
(b) The remote end tests the PINGs on both ends of the computer. If the PING fails, you must check whether the optical path connection is normal and whether the transmit and receive power of the fiber transceiver is within the allowable range. If you can PING pass it proves that the light path is connected properly. It can be determined that the fault is in the switch.
(c) Remote test to determine the fault point Connect the switch first to the switch and both ends to the PING. If there is no failure, it can be determined as the failure of the other switch.
8, after a period of communication crashes, that is, can not communicate, restarted and returned to normal
This phenomenon is generally caused by the switch. The switch will perform CRC error detection and length check on all received data. It will check out the packets with errors and discard them, and the correct packets will be forwarded. However, some erroneous packets in this process cannot be detected in the CRC error detection and length check. Such packets will not be sent during the forwarding process and will not be discarded. They will be stacked in the dynamic cache. In the buffer, it can never be sent out. When the buffer is full, it will cause the switch to crash. Because restarting the transceiver or restarting the switch at this time can restore the communication to normal, the user will usually consider it as a problem with the 10-Gigabit transceiver.
10 Gigabit Transceiver Common Faults and Causes Analysis
With the increasing demand of people for multimedia communications such as data, voice, and images , the development of 10G transceivers is relatively rapid. When customers use them, they will encounter many questions. This article summarizes some points and hopes that customers can refer to them for reference.