Management and Configuration Guide K/KA/KB.15.15

10 Troubleshooting
Overview
This chapter addresses performance-related network problems that can be caused by topology,
switch configuration, and the effects of other devices or their configurations on switch operation.
(For switch-specific information on hardware problems indicated by LED behavior, cabling
requirements, and other potential hardware-related problems, see the Installation Guide you
received with the switch.)
NOTE: HP periodically places switch software updates on the HP Switch Networking website.
HP Switch recommends that you check this website for software updates that may have fixed a
problem you are experiencing.
For information on support and warranty provisions, see the Support and Warranty booklet shipped
with the switch.
Troubleshooting approaches
Use these approaches to diagnose switch problems:
• Check the HP website for software updates that may have solved your problem:
www.HP.com/Networking/Support
• 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.
• Check the network topology/installation.
• 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 more information, see the Installation Guide shipped with the switch.
• Use HP PCM+ to help isolate problems and recommend solutions.
• 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:
◦ 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. 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)
368 Troubleshooting