一種新型的PPS交換機
A New Type of PPS Switches
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摘要: 并行分組交換機(PPS)是一種利用多個低速交換結(jié)構(gòu)實現(xiàn)高速交換的新技術(shù)，它是當前高速交換領(lǐng)域的一個研究熱點。該文首先分析了PPS交換機的研究現(xiàn)狀。然后，提出了一種新型的PPS交換機結(jié)構(gòu)，運用流指數(shù)控制的方法保證了信元通過PPS交換機時不會亂序。仿真分析表明該交換結(jié)構(gòu)和算法能提供良好的吞吐率和平均延遲。
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關(guān)鍵詞:
- 并行分組交換機; 兩階段交換機; 平均時延; 流指數(shù)
Abstract: Parallel Packet Switch (PPS) can realize high speed switching by using low speed switches, which is a hot spot in switching area. So, this paper analyzes the current situation, and presented the PPS_RR scheduling algorithm by using the concept of flow index. The math analyzing validates that the system can guarantee packet sequence in a data flow. Finally, computer simulation shows the type of PPS has good performance on average delay. -
Iyer. S, Awadallah. A, et al.. Analysis of packet switch withmemories munning mlower than the mine mate[A]. IEEEINFOCOM'00, Tel Aviv, Israel, April 2000, vol.2: 529.537.[2]Iyer S, McKeown N. Making parallel packet switches practical.IEEE INFOCOM, May 2001, vol.3: 1680.1687.[3]S-T Chuang, Goel A, McKeown N, Prabhakar B. Matching outputqueueing with a combined input output queued switch[J].IEEE J.on Select. Areas Commun.1999,17:1030-[4]Chang C S, Lee D S, Jou Y S. Load balanced Birkhoff-vonNeumann switches Part I: one-stage buffering. ComputerCommunications, 2002, 25(6): 611.622. -
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