Your issue (as described) is either from the patch cable or the PC ethernet adapter. There are no specific requirements for this document. This document applies to Catalyst switches that run on Cisco IOS® System Software. The information in this document was created from the devices in a specific. Switches have LEDs for indicating power status, port status,link status, error indication, troubleshooting and performance monitoring. The LED colors for the switch and their corresponding status indications are as follows ; To Select or change a mode, press the mode button until the desired mode. We use switch (M4300-52G-PoE+ ProSAFE 48-port 1G PoE+ and 2-port 10GBASE-T and 2-port 10G SFP+) as Layer 2 switch configured with Static IP. Certain times, randomly we notice that there is network loss for few seconds. My switch is a TL-SG108E, which isn't listed here but also wasn't listed in the business section -- am I in the wrong forum? I noticed today that one of the green activity lights on my TL-SG108E switch wasn't blinking, and when I went in to the Switching page of the web interface the corresponding. Understanding the lights on your network or Ethernet ports is essential for maintaining a stable and reliable network. Ethernet port link lights will identify the status of the connection between the ethernet port and the device connected to it.