This book covers the CCIE v5 topics for tunnelling, DMVPN (Dynamic Multipoint VPN), VPNs, and NAT. It will show you how to create a network from the beginning, starting with basic GRE tunnels, and working up towards a phase 3 DMVPN solution for both IPv4 and IPv6 traffic. Using EIGRP, OSPF, and BGP, you will create a scalable, secure network, implementing Quality of Service along the way. This volume also covers IPv6 transition mechanisms, such as 6over4, 6to4, 6RD and ISTAP, and IPv6 for NAT.