xxvCisco Content Services Switch Advanced Configuration Guide78-13887-03About This GuideThis guide provides instructions for configuring the advanced features of theCisco 11500 and 11000 series content services switch (hereinafter referred to asthe CSS). Information in this guide applies to all CSS models except where noted.For information on CSS administration, refer to the Cisco Content Services SwitchAdministration Guide. For information on basic CSS configuration, refer to theCisco Content Services Switch Basic Configuration Guide.The CSS software is available in a Standard or Enhanced feature set. TheEnhanced feature set contains all of the Standard feature set and also includesNetwork Address Translation (NAT) Peering, Domain Name Service (DNS),Demand-Based Content Replication (Dynamic Hot Content Overflow), ContentStaging and Replication, and Network Proximity DNS. Proximity Database andSSH are optional features.Note You must enter a software license key when you boot the CSS for the first time.After you boot the CSS, you can activate a CSS software option (for example,SSH) that you purchased using the license command. For more information, referto the Cisco Content Services Switch Hardware Installation Guide, Chapter 3,Booting and Configuring the CSS.Note If you configure your 11000 series CSS for Proximity Database, you cannot usethe CSS for load balancing. For details on Proximity Database, refer to Chapter 5,Configuring Network Proximity.