Motivated by limitations in today\u2019s host-centric IP network, recent studies have proposed clean-slate network architectures centered around alternate \ufb01rst-class principals, such as content, services, or users. However, much like the host-centric IP design, elevating one principal type above others hinders communication between other principals and inhibits the network\u2019s capability to evolve. This paper presents the eXpressive Internet Architecture (XIA), an architecture with native support for multiple principals and the ability to evolve its functionality to accommodate new, as yet unforeseen, principals over time. We describe key design requirements, and demonstrate how XIA\u2019s rich addressing and forwarding semantics facilitate \ufb02exibility and evolvability, while keeping core network functions simple and ef\ufb01cient. We describe case studies that demonstrate key functionality XIA enables.<\/p>\n","protected":false},"excerpt":{"rendered":"
Motivated by limitations in today\u2019s host-centric IP network, recent studies have proposed clean-slate network architectures centered around alternate \ufb01rst-class principals, such as content, services, or users. However, much like the host-centric IP design, elevating one principal type above others hinders communication between other principals and inhibits the network\u2019s capability to evolve. 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