Cisco Catalyst 3550

Preface
Obtaining Technical Assistance
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Catalyst 3550 Multilayer Switch Hardware Installation Guide
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P3 and P4 level problems are defined as follows:
• P3—Your network performance is degraded. Network functionality is
noticeably impaired, but most business operations continue.
• P4—You need information or assistance on Cisco product capabilities,
product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to
your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources,
Cisco.com registered users can open a case online by using the TAC Case Open
tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by
telephone and immediately open a case. To obtain a directory of toll-free numbers
for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
• P1—Your production network is down, causing a critical impact to business
operations if service is not restored quickly. No workaround is available.
• P2—Your production network is severely degraded, affecting significant
aspects of your business operations. No workaround is available.