Shared-memory optical packet (ATM) switch
Shared-memory optical packet (ATM) switch
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共享内存光数据包 (ATM) 交换机
DOI：
10.1117/12.161326
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
M. Karol
中科院分区：
文献类型：
--
作者：
M. Karol
之前，我们确定了与“全光”数据包交换机相关的基本性能限制，其中数据包缓冲是通过光纤延迟线实现的。在这项工作中，我们提出并分析了一种光分组（ATM）交换机架构，该架构接近实现随机访问、共享内存设计的最佳性能（即最佳可能的延迟吞吐量性能和最小可能的缓冲区要求）。所提出的共享内存光分组（SMOP）交换机在适当选择长度的再循环延迟线中缓冲数据包，并使用一种新颖的控制算法：（i）使数据包保持正确的先进先出顺序，（ii）支持多级优先级流量，（iii）最大限度地减少所需的再循环环路数量（从而减小交换结构的尺寸），以及（iv）确保数据包仅少量通过再循环延迟线（例如，少于 10 个）。
Previously, we determined fundamental performance limitations associated with `all-optical' packet switches, in which the packet buffering is implemented via fiber delay lines. In this work, we propose and analyze an optical packet (ATM) switch architecture that comes close to achieving the optimal performance (i.e., best possible delay-throughput performance and minimal possible buffer requirements) of a random-access, shared-memory design. The proposed Shared-Memory Optical Packet (SMOP) Switch buffers packets in recirculation delay lines of appropriately-selected lengths, and uses a novel control algorithm that: (i) keeps packets in their proper first-in, first-out sequence, (ii) supports multiple levels of priority traffic, (iii) minimizes the needed number of recirculation loops (which reduces the size of the switch fabric), and (iv) ensures that packets pass through the recirculation delay lines only a small number of times (e.g., less than 10).