The Transition to IPv6, Part II: The Softwire Mesh Framework Solution

Part I of this series described a prototype solution that provides dynamic IPv4 routing and forwarding across the IPv6-based China Education and Research Network (CERNET2). This work spawned an effort in the IETF to develop a generalized method for routing and tunneling different address families across uniform IPv4 or IPv6 backbone networks. Inspired by the CERNET2 effort, the IETF Softwires working group has introduced a framework for a solution that offers a generalized, network-based capability for routing and tunneling multiple address families across native IPv4 or IPv6 backbone networks.