현재 점점 더 많은 휴대용 단말들은 서로 다른 access 기술들을 이용하여 Internet에 연결하기 위해 많은 인터페이스를 가지고 있다. 이러한 각각의 access 기술들은 서비스 지원 영역, bandwidth, 그리고 신뢰성 등의 그들만의 특성들을 갖게 된다. 이와 같이 두 개 이상의 인터페이스를 가지고 있는 단말은 현재 사용 중인 인터페이스의 문제가 발생했을 경우 다른 여분의 인터페이스를 통해 인터넷에 접근하거나, 효과적으로 traffic을 분산시킬 수 있는 등 많은 장점들을 지니고 있다. 이런 환경을 단말의 Multihoming이라고 하는데 현재까지는 인터넷 상의 프로토콜이 이와 같은 Multihoming을 지원하고 있지 않다. 따라서 본 논문은 이와 같은 IPv6 환경에서 이동 단말의 Multihoming 지원 시 필요한 기술적인 고려사항에 대해 알아보고 multiple interface로부터 획득한 address들의 등록을 통해 신뢰성 있는 접근성과 vertical handover를 지원할 수 있는 방법을 소개한다.
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