Troubleshooting; Basic Troubleshooting Tips - HP 2530-24 Installation And Getting Started Manual

Troubleshooting

This chapter describes how to troubleshoot your HP 2530 Switches. This
document describes troubleshooting mostly from a hardware perspective.
You can perform more in-depth troubleshooting on these devices using the
software tools available with the switches, including the full-featured console
interface, the built-in Web browser interface, and HP PCM, the SNMP-based
HP network management tool. For more information, see the chapter
"Troubleshooting" in the Management and Configuration Guide, which is on
the HP Web site at www.hp.com/networking/support.
This chapter describes the following:

basic troubleshooting tips

■
■ diagnosing with the LEDs
■ proactive networking tools
hardware diagnostic tests
■
restoring the factory default configuration
■
■ downloading new software to the HP 2530 Switches
HP Customer Support Services
■
Basic Troubleshooting Tips
Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:
Connecting to devices that have a fixed full-duplex configuration.
■
The RJ-45 ports are configured as "Auto". That is, when connecting to
attached devices, the switch operates in one of two ways to determine the
link speed and the communication mode (half duplex or full duplex):
• If the connected device is also configured to Auto, the switch will
automatically negotiate both link speed and communication mode.
• If the connected device has a fixed configuration, for example 100
Mbps, at half or full duplex, the switch will automatically sense the
link speed, but will default to a communication mode of half duplex.
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