The LED on a TP-Link switch indicates the status of the switch and the network connection. Different colors and patterns of the LED mean different things, such as power on, power off, link speed, link activity, and link error. In this article, we will explain what each LED means and how to troubleshoot common issues with your TP-Link switch.
The power LED is located on the front panel of the switch. It shows whether the switch is receiving power from the power adapter or not. The power LED has two possible states:
Green: The switch is powered on and working normally.
Off: The switch is powered off or not connected to the power source.
If the power LED is off, you should check the following:
Make sure the power adapter is plugged into a working power outlet and connected to the switch properly.
Make sure the power switch on the back panel of the switch is turned on.
Try using a different power adapter or power outlet if possible.
If the problem persists, contact TP-Link support for assistance.
Link/Act LED
The link/act LED is located next to each Ethernet port on the switch. It shows the status of the network connection and the data transmission on each port. The link/act LED has three possible states:
Green: The port is connected to a device that supports 1000 Mbps (Gigabit Ethernet) and the link is active. The LED will blink when data is being transmitted or received on the port.
Amber: The port is connected to a device that supports 10/100 Mbps (Fast Ethernet) and the link is active. The LED will blink when data is being transmitted or received on the port.
Off: The port is not connected to any device or the link is inactive.
If the link/act LED is off, you should check the following:
Make sure the Ethernet cable is plugged into the port and the device properly.
Make sure the Ethernet cable is not damaged or broken.
Make sure the device is powered on and has a valid IP address.
Try using a different Ethernet cable or port if possible.
If the problem persists, contact TP-Link support for assistance.
Link Error LED
The link error LED is located on the front panel of some TP-Link switches, such as the TL-SG105E and the TL-SG108E. It shows whether there is any error on the network connection, such as loop detection, cable test, or port isolation. The link error LED has two possible states:
Red: There is an error on the network connection. The LED will blink to indicate which port has the error. For example, if the LED blinks twice, it means port 2 has an error.
Off: There is no error on the network connection.
If the link error LED is red, you should check the following:
Make sure there is no loop in the network topology, such as connecting two ports of the same switch or connecting two switches with multiple cables.
Use the cable test feature on the switch to check the quality and length of the Ethernet cable. You can access the cable test feature by logging into the web management interface of the switch.
Use the port isolation feature on the switch to isolate the port with the error from the rest of the network. You can access the port isolation feature by logging into the web management interface of the switch.
If the problem persists, contact TP-Link support for assistance.
The LED on a TP-Link switch is a useful tool to monitor and troubleshoot the status of the switch and the network connection. By understanding what each LED means, you can easily identify and resolve common issues with your TP-Link switch. For more information, you can refer to the user manual or the official website of TP-Link.
