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:
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For information on support and warranty provisions, see the Support and
Warranty booklet shipped with the switch.
11-2
Troubleshooting Approaches (page 11-3)
Browser or Console Interface Problems (page 11-4)
Unusual Network Activity (page 11-6)
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General Problems (page 11-6)
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IGMP-Related Problems (page 11-7)
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Spanning Tree Protocol (STP) Related Problems (page 11-8)
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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:
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Link test (page 11-14)
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Ping test (page 11-15)
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Browse configuration (page 11-18)
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Command prompt (page 11-13)
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Restoring the factory default configuration (page 11-20)