一種新型的PPS交換機(jī)
A New Type of PPS Switches
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摘要: 并行分組交換機(jī)(PPS)是一種利用多個(gè)低速交換結(jié)構(gòu)實(shí)現(xiàn)高速交換的新技術(shù)，它是當(dāng)前高速交換領(lǐng)域的一個(gè)研究熱點(diǎn)。該文首先分析了PPS交換機(jī)的研究現(xiàn)狀。然后，提出了一種新型的PPS交換機(jī)結(jié)構(gòu)，運(yùn)用流指數(shù)控制的方法保證了信元通過(guò)PPS交換機(jī)時(shí)不會(huì)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(jī); 兩階段交換機(jī); 平均時(shí)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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