IP프로토콜은 이기종 네트워크의 연결을 가능하게 하고, 표준화된 패킷 구조와 전송방법을 정의하는 것으로서 유래 없는 성공을 거두었지만, 하나의 주소체계(IP Address)가 단말의 위치자(Locator)와 식별자(Identifier)를 동시에 의미하기 때문에 이동 단말에 대한 관리가 용이하지 않다는 단점을 가지고 있으며, 최근 이동단말이 증가하고 그에 따른 서비스 요청이 많아짐에 따라 한계점을 드러내고 있다. 따라서 IETF, ITU-T에서는 이를 해결하기 위한 프로토콜을 제안하고 표준화를 진행하고 있다. IETF의 경우 기존 IP망을 유지하면서 위치자와 식별자를 분리하여 단말에 이동성을 주고, 라우팅 테이블의 수를 줄이는 LISP가 연구되었으며, HIP WG에서는 멀티호밍과 보안성을 지원하는 새로운 계층의 네트워크 프로토콜을 고안하여 현 IP체제가 가지는 한계점을 극복하기 위한 연구 및 표준화를 진행하고 있다. 본 고에서는 두 WG에서 다루고 있는 프로토콜의 작동원리와 현 인터넷의 문제점을 해결하기 위한 위치자/식별자 분리를 위한 표준 현황 및 동향에 대해 살펴본다.
KSP Keywords
IP address
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