You can follow the following steps to troubleshoot: Check physical connections: Try reseating the connectors to ensure a proper connection. Inspect LED indicators: Typically, the Link/Activity LED should be lit, indicating activity is occurring. By understanding and resolving these issues, you can maintain a resilient network infrastructure. If the entire switch is unresponsive, or. We have a fibre run, SM, 650 meters, with Level1 dumb switches at each end, I get Link lights at both ends, but there's no network traffic. Configuration Errors : IP conflicts, incorrect routing, or firmware bugs. I have seen this kind of issue on both '3750X series and 2960X series', and issue is following: - Swithes are 48- Ethernet ports PoE + 4 Fiber ports - 3750X switch = 3/4 ports are currently plugged with Cisco GBIC module. as I am dealing first time with fiber optic, I am having some Issue, I have one switch in MDF (2nd floor) C9300 and second switch MS225 on IDF (Ground floor) my cable guy ran fiber optic cable but when I connect fiber patch cable to switches then fiber ports are not coming up, we used Multimode. Fiber optic networks are celebrated for their speed and reliability, but even the best systems can encounter problems. When issues like signal loss, slow speeds, or intermittent connectivity arise, systematic troubleshooting is key.
