Transitioning from IPv4 to IPv6 requires coexistence between the two protocols. Too many programs, apps and services rely on IPv4 for it to be removed quickly. However, there are several technologies that aid transition by allowing communication between IPv4-only and IPv6-only hosts. There are also technologies that allow IPv6 communication over IPv4 networks.
We will review three of these technologies today in order to learn how to make IPv4 and IPv6 to communicate. These three ways are ISATAP, 6to4, Teredo.
Let’s start with ISATAP. So, what is ISATAP?
The ISATAP address-assignment technology provides unicast IPv6 connectivity between IPv6/IPv4 hosts over an IPv4 intranet. IPv6 packets are tunneled in IPv4 packets for transmission over the network. Communication can occur directly between two ISATAP hosts on an IPv4 network, or communication can go through an ISATAP router if one network has only IPv6-only hosts. Continue reading “IPv6 Transition Technologies”