Troubleshooting approaches

Cause
Use these approaches to diagnose switch problems:

  • Check the HPE website for software updates that may have solved your problem: http://www.hpe.com/networking

  • Check the switch LEDs for indications of proper switch operation:

    • Each switch port has a Link LED that should light whenever an active network device is connected to the port.

    • Problems with the switch hardware and software are indicated by flashing the Fault and other switch LEDs.For a description of the LED behavior and information on using the LEDs for troubleshooting, see the installation guide shipped with the switch.

  • Check the network topology/installation. For topology information, see the installation guide shipped with the switch.

  • Check cables for damage, correct type, and proper connections. You should also use a cable tester to check your cables for compliance to the relevant IEEE 802.3 specification. For correct cable types and connector pin-outs, see the installation guide shipped with the switch.

  • Use the Port Utilization Graph and Alert Log in the WebAgent included in the switch to help isolate problems. These tools are available through the WebAgent:

    • Port Utilization Graph

    • Alert log

    • Port Status and Port Counters screens

    • Diagnostic tools (Link test, Ping test, configuration file browser)

  • For help in isolating problems, use the easy-to-access switch console built into the switch or Telnet to the switch console. For operating information on the Menu and CLI interfaces included in the console, see chapters 3 and 4. These tools are available through the switch console:

    • Status and Counters screens

    • Event Log

    • Diagnostics tools (Link test, Ping test, configuration file browser, and advanced user commands)