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Severity 1 (S1)—An existing network is “down” or there is a critical impact to your business operations. You and Cisco will
commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operations are
negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal
business hours to resolve the situation.
Severity 3 (S3)—Operational performance of the network is impaired while 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.
13 Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•The Cisco Online Subscription Center is the website where you can sign up for a variety of Cisco e-mail newsletters and
other communications. Create a profile and then select the subscriptions that you would like to receive. To visit the Cisco
Online Subscription Center, go tothis URL:
http://www.cisco.com/offer/subscribe
•The Cisco Product Quick Reference Guide is a handy, compact reference tool that includes brief product overviews, key
features, sample part numbers, and abbreviated technical specifications for many Cisco products that are sold through
channel partners. It is updated twice a year and includes the latest Cisco channel product offerings. To order and find out
more about the Cisco Product Quick Reference Guide, go to this URL:
http://www.cisco.com/go/guide
•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
•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 where networking professionals 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
•“What’s New in Cisco Documentation” is an online publication that provides information about the latest documentation
releases for Cisco products. Updated monthly, this online publication is organized by product category to direct you quickly
to the documentation for your products. You can view the latest release of “What’s New in Cisco Documentation” at this
URL:
http://www.cisco.com/univercd/cc/td/doc/abtunicd/136957.htm
•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