Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You
and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is
little or no effect on your business operations.
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Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
• Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo merchandise. Visit Cisco
Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
• Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users
will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:
http://www.ciscopress.com
• Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each
quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions,
as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and
training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:
http://www.cisco.com/packet
• iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use
technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges
facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help
readers make sound technology investment decisions. You can access iQ Magazine at this URL:
http://www.cisco.com/go/iqmagazine
• or view the digital edition at this URL:
http://ciscoiq.texterity.com/ciscoiq/sample/
• Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in
designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal
at this URL:
http://www.cisco.com/ipj
• Networking products offered by Cisco Systems, as well as customer support services, can be obtained at this URL:
http://www.cisco.com/en/US/products/index.html
• Networking Professionals Connection is an interactive website for networking professionals to share questions, suggestions,
and information about networking products and technologies with Cisco experts and other networking professionals. Join
a discussion at this URL:
http://www.cisco.com/discuss/networking
• World-class networking training is available from Cisco. You can view current offerings at this URL:
http://www.cisco.com/en/US/learning/index.html
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