VS-820S 8 SFP Slots with 2 Giga
unmanaged Ethernet Switch
19
Solution:
Please make sure opposite side device setting on full duplex mode, since VS-820S doesn’t support helf duplex mode. If
LED jitter it mean both internal chipset without compatible.
Power and Cooling Problems
If the POWER indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power
cord, or internal power supply. However, if the unit power is off after running for a while, check for loose power connections, power
losses or surges at the power outlet. If you still cannot isolate the problem, then the internal power supply may be defective. In this
case, please contact your local dealer.
Installation
Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (e.g. the
power cord or network cabling), test them in an alternate environment where you are sure that all the other components are
functioning properly.
Transmission Mode
The default of transmission mode for RJ-45 ports is 10/100/1000 Mbps Ethernet, SFP port is 1.25Gbps (1000Base-X). Therefore, if
the Link signal is disrupted (e.g. by unplugging the network cable and plugging it back in again, or by resetting the power), the port
will try to re-establish connection with the attached device via auto-negotiation.
Physical Configuration
If problems occur after altering the network configuration, restore the original connections, and try to track the problem down by
implementing the new changes, one step at a time. Ensure that cable distances and other physical aspects of the installation do not
exceed recommendations.
System Integrity
As a last resort verify the switch integrity with a power-on reset. Turn the power to the switch off and then on several
times. If the problem still persists and you have completed all the preceding diagnoses, then contact your dealer.