As the means by which Internet destinations are communicated between subscribers and service providers, BGP-4 provides a critical function for Internet operations. Whether associated with Internet service providers or enterprise networks that depend heavily on the Internet, a background in BGP-4 is essential. Moving beyond background information, BGP contains a great number of commands, and practical information on those commands is difficult to come by.Cisco BGP-4 Command and Configuration Handbook is an exhaustive practical reference to the commands contained within BGP-4. For each command/subcommand, author Bill Parkhurst explains the intended use or function and how to properly configure it. Then he presents scenarios to demonstrate every facet of the command and its use, along with appropriate show and debug commands. Through the discussion of functionality and the scenario-based configuration examples, Cisco BGP-4 Command and Configuration Handbook will help you gain a thorough understanding of the practical side of BGP-4.