Follow these steps:
1.Open your browser, and go to http://www.cisco.com/.
2.Click Technical Support.
3.Click Product Support > Switches > Catalyst LAN and ATM Switches > 3550 Series Switches > Troubleshooting.
4.Click the subject that addresses the problem that you are experiencing.
For More Information
For more information about the switch, refer to these documents on Cisco.com:
•Catalyst 3550 Multilayer Switch Hardware Installation Guide (not orderable but available on Cisco.com). This guide provides complete hardware descriptions and detailed installation procedures.
•Regulatory Compliance and Safety Information for the Catalyst 3550 Multilayer Switch (order number
•Catalyst 3550 Multilayer Switch Software Configuration Guide (order number
•Catalyst 3550 Multilayer Switch Command Reference (order number
•Catalyst 3550 Multilayer Switch System Message Guide (order number
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