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등록 공유버퍼형 스위치의 적응버퍼 배분방법 및 이에 사용되는 스위치

공유버퍼형 스위치의 적응버퍼 배분방법 및 이에 사용되는 스위치
이미지 확대
발명자
한만수, 권율, 이우섭, 남홍순
출원번호
10055454 (2002.01.22)
공개번호
20030135579 (2003.07.17)
등록번호
7009988 (2006.03.07)
출원국
미국
협약과제
01MT2300, 테라급 라우터 기술, 이형호
초록
A method for adaptively partitioning a buffer in a shared buffer switch is provided. The buffer partitioning method for a shared buffer switch which has a plurality of input ports, a plurality of output ports, and a shared buffer, the method for determining whether or not to store a cell, which is newly received through one of the input ports, in the shared buffer comprises the steps of (a) determining a buffer area of the shared buffer in which the newly received cell is stored; (b) determining a cell discard threshold with respect to the total number of cells stored in the shared buffer and the changing rate, with respect to time, of the total number of the cells; and (c) determining whether or not to store the newly received cell in the shared buffer, by comparing the number of cells stored in the buffer area in which the newly received cell is to be stored, with the cell discard threshold. In the method, using a cell discard threshold which is determined with respect to the total number of cells stored in a shared buffer and the changing rate of the total number of cells, it is determined whether or not to store a newly received cell. Therefore, the shared buffer switch adaptively handles changes in inflowing traffic volume and changes in outflowing cell traffic volume such that cell loss due to cell discard is effectively prevented.
KSP 제안 키워드
Partitioning method, Shared buffer, Traffic volume, number of cells