What are three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme. (Choose three.)
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A. B. C. D. E. F.ACD
Several methods are used terms of migration including tunneling, translators, and dual stack. Tunnels are used to carry one protocol inside another, while translators simply translate IPv6 packets into IPv4 packets. Dual stack uses a combination of both native IPv4 and IPv6. With dual stack, devices are able to run
IPv4 and IPv6 together and if IPv6 communication is possible that is the preferred protocol. Hosts can simultaneously reach IPv4 and IPv6 content.
Sure, I'd be happy to explain the three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme.
Enable Dual-Stack Routing: One of the most common approaches to migrating from IPv4 to IPv6 is to enable dual-stack routing. Dual-stack routing involves running both IPv4 and IPv6 protocols simultaneously on the same network infrastructure. This allows devices that support both protocols to communicate with each other using either protocol. Dual-stack routing can be used on both the edge and core networks and requires no translation between the two protocols. This approach is generally considered the easiest and most straightforward method of migrating to IPv6.
Configure IPv6 Directly: Another approach to migrating from IPv4 to IPv6 is to configure IPv6 directly on devices that support it. This involves manually configuring IPv6 addresses on each device and ensuring that all devices are configured to use the new IPv6 addresses. This approach is generally more time-consuming and labor-intensive than dual-stack routing but may be necessary in cases where devices do not support IPv4.
Configure IPv4 Tunnels Between IPv6 Islands: A third approach to migrating from IPv4 to IPv6 is to configure IPv4 tunnels between IPv6 islands. This involves creating a virtual tunnel between two IPv6 networks using IPv4 as the transport protocol. This approach allows devices on separate IPv6 networks to communicate with each other even if they are not directly connected to each other. However, it does require additional configuration and may result in additional latency due to the use of encapsulation.
It's worth noting that the other options listed in the question (using proxying and translation to translate IPv6 packets into IPv4 packets, statically mapping IPv4 addresses to IPv6 addresses, and using DHCPv6 to map IPv4 addresses to IPv6 addresses) are also valid approaches to migrating from IPv4 to IPv6, but they are not among the most commonly used approaches.