Cisco Self-Study: Implementing IPv6 Networks (IPV6)

Dual Stack

This section presents the dual-stack approach used to transition from IPv4 networks to IPv6. The dual stack is a method used by the network's host, server, and router to handle and use the IPv4 and IPv6 protocols simultaneously. This well-known technique was successfully applied in the past for other protocol transitions, especially for the deployment of IPv4 inside Internet Packet Exchange (IPX) networks, Digital Equipment Corporation network protocol (DECnet), and AppleTalk-based networks. Dual-stack support implies that an IPv6 stack is installed on the host, server, and router where both protocols are needed. The management of IPv6 stacks on dual-stack nodes is greatly facilitated by IPv6's stateless autoconfiguration functionality, ...