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This article provides internetworking design, implementation
case studies, and examples, with the intent to help you identify
and implement practical internetworking strategies that are both
flexible and scalable. This article was developed to assist
professionals preparing for Cisco Certified Internetwork Expert
(CCIE) candidacy, though it is a valuable resource for all
internetworking professionals. It is designed for use in
conjunction with other Cisco manuals or as a standalone
reference. You may find it helpful to refer to the Internetwork
Design Guide, which provides detailed descriptions of the
internetworking strategies and technologies used in this
article. Cisco's dial-on-demand routing (