Border Gateway Protocol (BGP) does exactly what the name implies - it routes traffic efficiently from its origin on one network for the purpose on the other. Internet Routing Architectures is an authoritative text on BGP in theory and practice, covering everything from design BGP-based internetworks to actual implementation of those internetworks on Cisco Systems routers. Sam Halabi - a respected authority on Cisco routers - discusses addressing schemes and the ways in which routing protocols operate within the scheme. General information primarily to set the stage for BGP, which Halabi explained explicitly in the theory before getting into design problems and, finally, implementation via router configuration Wall. - David Topics covered: Means of connecting one network to another, especially with the way the Border Gateway Protocol 4 (BGP-4) on Cisco Systems routers.