If the link light for the port does not come on, you can consider these possibilities: Connect cable from switch to a known good device. Make sure that both ends of the cable are plugged into the correct ports. Verify the cable. The table describes the LED status indicators for Ethernet modules or fixed-configuration switches: Ensure that both sides have a link. A single broken wire or one shutdown port can cause the problem where one side has a link light, but the other side does not. For enterprise IT teams and engineers using Router-switch devices, these LEDs are often the first indicator of network health. LEDs on the port side of the switch Table 1. When optical modules operate on a switch, it is usually necessary to read the module's internal information to understand its working status—such as connection status and real-time metrics like optical power and temperature. Additionally, identifying module information helps detect coding. The switch ports are all set up with VLAN IDs. Can anyone please help me fix this? Thanks in Advance. 03-25-2023 01:38 AM what device mode? and what IOS code running? media type is unsupported <-- SFP not detected ? ( what SFP you have ?) Remove the SFP.
