Abstract:
Disclosed are a method for managing multi-level problems using a problem suspicious state in a multi-level optical transmission system and a device thereof. According to an embodiment of the present invention, the method for managing multi-level problems comprises the steps of defining a problem suspicious state with a risk of problems; and changing the problem states of remaining brother devices into problem suspicious states to stop the admission of quality assurance services until suspicion of problems is resolved if a device with a problem has a lower class device and a problem occurs or is suspected in brother devices associated with the lower class device.
Abstract:
본 발명은 네트워크에서 단말 이동성을 보장하기 위한 분산 방식의 주소 관리 장치 및 관리 방법에 관한 것으로, 이동 IPv6 네트워크의 주소 재할당과 위치 등록 등을 고속화할 수 있는 단말 이동성을 보장하기 위하여, IPv6에 기반한 주소체계에 의해 서브넷 프리픽스와 홈 아이디가 동일하고, 단말 아이디는 순차적으로 증가 혹은 감소하도록 각각의 주소를 형성하여 저장하는 주소 풀과 이동 단말의 주소할당 요청에 대응하여 상기 주소 풀로부터 주소를 선택하여 상기 이동 단말에 주소를 할당하는 주소 할당 루틴을 포함하여 구성하여 핸드 오버 지연시간을 줄일 수 있다. 서브넷, 프리픽스, IPv6, 주소 풀
Abstract:
A method and an apparatus for updating link state information are provided to remarkably reduce the overheads due to link state update and the fluctuation of a routing protocol by reducing the number of times link state information is updated. A node, in a network where a plurality of nodes are connected through links, transmits link state information, which indicates the state of its own connected link, to a neighbor node, and constructs a whole network link state table containing link state information of the whole network, based on the transmitted link state information(S110). If a QoS routing request is made, the node configures a QoS routing table, based on the whole network link state table, and establishes a QoS path. The node calculates a value consumed for the resources of each link located on the established QoS path and acquires the present value and average value of the link state information(S120). In case the difference between the present value and average value of the link state information is larger than a threshold, the node transmits the present value to the neighbor node(S130).