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Wiki90: 90s Style Encyclopedia on the Web
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Mapping of Address and Port
In this article, we will explore the topic of Mapping of Address and Port and its impact on modern society. From its origins to its current evolution, Mapping of Address and Port has played a fundamental role in different aspects of daily life. Throughout history, Mapping of Address and Port has been the subject of debate and controversy, generating diverse opinions and opposing points of view. Through a deep and exhaustive analysis, we will examine the role of Mapping of Address and Port in various contexts, seeking to understand its influence on culture, politics, economics and other areas of contemporary life. From its historical importance to its future implications, Mapping of Address and Port has been and will continue to be a topic of interest and relevance in today's world.
| IPv6 transition mechanisms |
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| Standards Track |
| Experimental |
| Informational |
| Drafts |
| Deprecated |
Mapping of Address and Port (MAP) is a proposal that combines A+P port address translation with the tunneling of legacy IPv4 protocol packets over an ISP's internal IPv6 network.
MAP uses the extra bits available in the IPv6 address to contain the extra port range identifier bits of the A+P addressing pair that cannot be encoded directly into the IPv4 address, thus eliminating the need for "port routing" within the carrier network by leveraging the provider's own IPv6 rollout.
In effect, MAP is an (almost) stateless alternative to Carrier-grade NAT and DS-Lite that pushes the IPv4 IP address/port translation function (and therefore the maintenance of NAT state) entirely into the existing customer premises equipment IPv4 NAT implementation, thus avoiding the NAT444 and statefulness problems of carrier-grade NAT.
See also
RFCs
- Mapping of Address and Port using Translation (MAP-T). doi:10.17487/RFC7599. RFC 7599.
- Mapping of Address and Port with Encapsulation (MAP-E). doi:10.17487/RFC7597. RFC 7597.