How to check the light value on a Huawei switch

You can check the status lights on a Huawei switch by using the display interface brief command to see which ports are up or down, and by observing the physical LED indicators on the switch.Checking Port Status via CLIAccess the switch CLI: Connect through a console cable, SSH, or Telnet.Enter system view: Type system-view to access configuration mode.Check interface summary: Use the command display interface brief to view all ports and their status. Ports that are Up indicate active connections, while Down indicates no link or a fault .Detailed interface check: For more information on a specific port, use display interface to see errors, negotiation mode, speed, and duplex settings .Diagnostic information: Optionally, run display diagnostic-information to collect comprehensive data about the switch, including interface and system status .Observing Physical LEDsLink/Activity LEDs: Each port has an LED that indicates link status and activity. A steady light usually means the port is connected, while blinking indicates traffic. No light may indicate the port is down or disconnected.Power LEDs: Ensure the switch is powered on; a green LED typically indicates normal operation.PoE LEDs: If using PoE, check the LED to confirm power delivery to connected devices.Additional Commandsdisplay mac-address to verify connected devices.display arp to check IP-to-MAC mappings.display lldp neighbor to see neighboring devices and their ports .display power manage power-information to check PoE status if applicable . By combining CLI commands with physical LED observation, you can effectively check the light and operational status of a Huawei switch, identify faulty ports, and troubleshoot connectivity issues .