Table of Contents

Serial communications Protocol overview; serial communications hardware overview; Cisco communication hardware; configuring asynchronous modems with Cisco Routers; PPP encapsulation and security with PAP and CHAP; remote connectivity with ISDN; optimizing DDR over ISDNl configuring and troubleshooting the Cisco 700 series; multi-link PPP versus Bandwidth on demand; routing Protocol interactions; distance vector, advanced Protocols; X.25; frame relay with traffic shaping; establishing backup circuits for permanent connections; optimizing traffic flow on WAN interfaces; TACACS+ services using the AAA model; NAT and PAT for network scalability and security.