Troubleshooting

Troubleshooting

Overview

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, refer to the installation guide you received with the switch.)

This chapter includes:

Troubleshooting Approaches (page 11-3)

Browser or Console Interface Problems (page 11-4)

Unusual Network Activity (page 11-6)

General Problems (page 11-6)

IGMP-Related Problems (page 11-7)

Spanning Tree Protocol (STP) Related Problems (page 11-8)

VLAN-Related Problems (page 11-9)

Using the Event Log To Identify Problem Sources (page 11-11)

Diagnostics and management tools (page 11-14),including:

Link test (page 11-14)

Ping test (page 11-15)

Browse configuration (page 11-18)

Command prompt (page 11-13)

Restoring the factory default configuration (page 11-20)

For information on support and warranty provisions, see the Support and

Warranty booklet shipped with the switch.

11-2