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采用链路聚合(Trunking)技术,应用Packet Tracer仿真软件,设计了模拟拓扑图,给出了交换机的端口设置、IP地址分配以及配置命令,开展了交换机之间点到点链路的仿真实验和分析,实现了链路聚合(Trunking)技术在VLAN中的应用。 相似文献
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EtherChannel即以太网通道,它主要是通过将多个端口进行绑定,以此来达到增加可用带宽,实现链路冗余,提高网络可靠性的目的。CiscoCatalyst最多支持将8个端口进行绑定,Catalyst交换机支持单个逻辑链路的汇聚。 相似文献
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链路聚合中成员端口快速倒换的实现 总被引:1,自引:0,他引:1
在传统技术中,常用更换高速率的接口板或更换支持高速率接口板的设备的方式来增加带宽,但这种方案需要付出高额的费用,而且不够灵活。于是出现了将多条物理链路聚合成一条逻辑链路使用的链路聚合技术(Linkaggregation)。一、链路聚合技术及LACP链路聚合技术亦称主干技术(Trunking)或捆绑技术(Bonding),是在传统以太网和快速以太网交换机基础上 相似文献
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SMLT(Split Multi Link Trunk。分离的多链路聚合主干)技术是MLT技术的扩展,这种新技术的产生大大增强了北电交换机的链路可靠性和安全性。扩充了网络传输能力。本文主要介绍SMLT的原理和特点以及在江阴广电核心网络中的实际应用。 相似文献
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针对卫星链路的特点,利用仿真技术,采用NS2仿真软件建立仿真模型,设计仿真场景,给出了软件实现方法,分别在固定误码率和信道带宽、时延变化条件下,固定时延和信遣带宽、误码率变化条件下,固定时延和误码率、信道带宽变化条件下,对TCP协议和XTP协议在卫星链路的传输性能进行了仿真和对比分析,最后得出结论,XTP协议的通信机制比TCP协议更适合于卫星链路数据传输,为基于XTP协议的卫星协议网关设计提供仿真依据. 相似文献
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链路聚合是一种通过将多条物理链路捆绑成一条逻辑链路来增加带宽的常用技术,但是在基于光纤通道(fibre channel,FC)协议的交换网络中,随着转发流量区域的不断集中,传统静态链路聚合算法存在负载均衡性差、可靠性低的问题。因此提出了一种基于FC协议的动态负载均衡(flow adaptive load balancing, FALB)链路聚合算法,可以实现对流量的动态自适应匹配以及断链可重连保护机制。结果表明,该算法机制相较于静态负载均衡的算法设计,可以将有效带宽比最终收敛到 95%以上,有效提升聚合链路的负载均衡特性和可靠性。 相似文献
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光开关和光开关阵列技术的发展研究 总被引:4,自引:0,他引:4
光开关与光开关阵列是DWDM光网络的关键器件,主要用来实现光层的路由选择、波长选择和淆交叉连接等功能,文中全面论述比较了光开关和光开关阵列技术。 相似文献
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光开关和光开关阵列技术的发展研究 总被引:7,自引:0,他引:7
光开关与光开关阵列是DWDM光网络的关键器件,主要用来实现光层的路由选择、波长选择和光交叉连接等功能。文中全面论述比较了光开关和光开关阵列技术。 相似文献
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Single-pole-double-throw switch based on toggle switch 总被引:1,自引:0,他引:1
A single-pole-double-throw (SPDT) switch based on the toggle switch, a new type of radio frequency (RF) microelectromechanical (MEMS) switch structure for low voltage actuation, high broadband application and enhanced power capability, is presented. Electromagnetic simulation results are discussed and the fabrication process and measurement results are given. The SPDT switch exhibits low insertion loss (<0.5 dB at 20 GHz) and high isolation (>28 dB at 30 GHz). 相似文献
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The authors present a method by which to construct a fast N*N self-routing space switch network with identical 2*2 switch elements. This network is nonblocking and employs O(N log/sup 3/ N) switch elements; each element uses just two bits of the output port address for switching control.<> 相似文献
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Chao H.J. Byeong-Seog Choe Jin-Soo Park Uzun N. 《Selected Areas in Communications, IEEE Journal on》1997,15(5):830-843
Describes a new architecture for a multicast ATM switch scalable from a few tens to a few thousands of input ports. The switch, called the Abacus switch, has a nonblocking switch fabric followed by small switch modules at the output ports. It has buffers at input and output ports. Cell replication, cell routing, output contention resolution, and cell addressing are all performed in a distributed way so that it can be scaled up to thousands of input and output ports. A novel algorithm has been proposed to resolve output port contention while achieving input buffers sharing, fairness among the input ports, and call splitting for multicasting. The channel-grouping mechanism is also adopted in the switch to reduce the hardware complexity and improve the switch's throughput, while the cell sequence integrity is preserved. The switch can also handle multiple priority traffic by routing cells according to their priority levels. The performance study of the Abacus switch in throughput, average cell delay, and cell loss rate is presented. A key ASIC chip for building the Abacus switch, called the ARC (ATM routing and concentration) chip, contains a two-dimensional array (32×32) of switch elements that are arranged in a crossbar structure. It provides the flexibility of configuring the chip into different group sizes to accommodate different ATM switch sizes. The ARC chip has been designed and fabricated using 0.8 μm CMOS technology and tested to operate correctly at 240 MHz 相似文献
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D.X. Zhu S. Dubovitsky W.H. Steier K. Uppal D. Tishinin J. Burger P.D. Dapkus 《Photonics Technology Letters, IEEE》1997,9(8):1110-1112
A new class of an all-optical switch-the wavelength recognizing switch is proposed and experimentally demonstrated. The device uses a control signal to sense the wavelength of the input packet and taps a portion of the data packet to the appropriate output port. The device is based on noncollinear four-wave mixing in a broad-area traveling-wave semiconductor optical amplifier. Measured switching efficiency is +8.2 dB with -28.8 dB of crosstalk. The recognition bandwidth is as narrow as 0.03 /spl Aring/ and the 3-dB switching bandwidth is 42 nm. 相似文献
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Graham LS Connolly 《今日电子》2008,(11)
功能、功能、更多的功能!这是最近几年超便携电子产品市场的主题.将音频和数据源复用到USB数据线上已经成为自然的趋势.此外,随着视频/TV功能加入便携电子产品,还需要针对每一种数据源进行多媒体开关的优化.针对USB优化的开关是实现数据通道信号路由的首选解决方案.对音频和USB通道来说,需要考虑一些不同的、相互排斥的特性,包括负电压音频信号.将这些信号通道组合起来并维持良好的完整性和性能,是系统设计的一个有意义的挑战. 相似文献