Sequence-preserving parallel IP lookup using multiple SRAM-based pipelines

Jiang, Weirong; Prasanna, Viktor K.

doi:10.1016/j.jpdc.2009.04.001

Cited by 15 publications

(4 citation statements)

References 18 publications

(38 reference statements)

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“…以 OLP 为基础, 进一步将所有子树划分为多个子集, 为每一个子集建立一条单独的流水线, 即可构建并行多流水的架构 [21] (parallel optimized liner pipeline, POLP, 如图 5 所示) 来提升吞吐率. 若指定流水线的数目, 则在划分子树的过程中需尽量均衡各子集的大小 (存储块总数) 以平衡各流水间的负载.…”

Section: 背景及相关工作介绍unclassified

“…本文采用 C++ 作为主要的编程语言, 首先实现了 PMT (通过 MinMax [16] 算法构建), POLP [21] 和 BiOLP [22] , 然后根据是否旋转子树以及是否针对 BP 进行优化, 分别采用了 4 种不同的最优步长计算算法来实现 PMST. 所有流水线架构均部署在 DELL T620 服务器 (操作系统为 Ubuntu 12.04, CPU 11) .…”

Section: 实验环境与配置unclassified

“…此外, 近年来, 国内外研究学者针对基于特里树的流水线结构还提出了很多优化技术, 比如通过缓存技术来提高吞吐率 [16,21,22,25] 、借助多区间搜索树 [27,28] 或者更灵活的分层技术 [29] 来提升平衡度和存储效率, 以及针对负载均衡 [30,15] 和能耗 [31] 等方面的优化等. 或者是针对某些特定的应用场景 (比如虚拟化路由器 [32] ) 并结合数据和结构的特点来优化流水线的部署 [33,34] .…”

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Pmst:一种面向高性能ip查找的双向平衡流水线结构

Zhang

Huang

et al. 2015

Sci. Sin.-Inf.

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的发展使 IP 地址的长度从 32 位扩展到了 128 位, 这些都给 IP 查找的存储性能和可扩展性带来了严峻的挑战. 此外, 虚拟化路由器 [2] , 软件定义网络 2) 和命名数据网络 3) 等新兴网络技术及未来网络架构的提出与发展也对 IP 查找提出了新的需求. 基于无类型域间路由技术 (CIDR), IP 查找可转化为一个最长前缀匹配 (longest prefix matching, LPM) 问题. 其主流解决方案大致可分为 3 类: (1) 基于三态内容可寻址存储器 (ternary content addressable memory, TCAM) 的解决方案. 这类方案可以在一个时钟周期内完成对所有条目的查询, 具有非常高的性能 [3,4] , 但是 TCAM 价格昂贵、能耗较大, 需要维护转发规则的有序性又导致了其更新瓶颈 [5] , 这些缺陷使得这类方案难以直接用于大规模路由器或者更新频繁的应用场景 [6]. (2) 基于哈希 (Hash) 的解决方案. 这类方案依托先进的哈希技术, 能实现方便、快捷的查询和维护 [7∼9]. 但是由哈希冲突和假阳性带来的问题严重制约了其实际应用. (3) 基于特里树 (Trie) 的解决方案. 这类方案因其结构和算法的灵活多变, 倍受青睐 [10∼14]. 虽然已经有很多技术能将特里树压缩得非常紧凑 [11∼13] , 基于特里树的 IP 查找算法依然需要多次访存来完成一次查找, 导致了其性能瓶颈. 流水线技术的引入, 很好地解决了这个问题. 相关研究成果表明, 将特里树映射为基于静态随机访问存储器 (static random access memory, SRAM) 的流水线结构, 甚至能获得比 TCAM 还高的吞吐率 [15] , 且支持快速增量更新 [16,17] .

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Section: 背景及相关工作介绍unclassified

Section: 实验环境与配置unclassified

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Pmst:一种面向高性能ip查找的双向平衡流水线结构

Zhang

Huang

et al. 2015

Sci. Sin.-Inf.

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“…As a flexible and programmable device, the FPGA has a matrix of configurable logic blocks connected through programmable interconnects. In particular, FPGAs have been widely used to build the prototypes of packet forwarding engines [9][10][11][12][13] and intrusion detection systems [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Vectored-Bloom Filter for IP Address Lookup: Algorithm and Hardware Architectures

Byun

Lim

2019

Applied Sciences

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The Internet Protocol (IP) address lookup is one of the most challenging tasks for Internet routers, since it requires to perform packet forwarding at wire-speed for tens of millions of incomming packets per second. Efficient IP address lookup algorithms have been widely studied to satisfy this requirement. Among them, Bloom filter-based approach is attractive in providing high performance. This paper proposes a high-speed and flexible architecture based on a vectored-Bloom filter (VBF), which is a space-efficient data structure that can be stored in a fast on-chip memory. An off-chip hash table is infrequently accessed, only when the VBF fails to provide address lookup results. The proposed architecture has been evaluated through both a behavior simulation with C language and a timing simulation with Verilog. The hardware implementation result shows that the proposed architecture can achieve the throughput of 5 million packets per second in a field programmable gate array (FPGA) operated at 100 MHz.

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Semantic Association Systems for Product Data Integration in the Socio-Sphere

Thames¹

2014

Product Development in the Socio-Sphere

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Sequence-preserving parallel IP lookup using multiple SRAM-based pipelines

Cited by 15 publications

References 18 publications

Pmst:一种面向高性能ip查找的双向平衡流水线结构

Pmst:一种面向高性能ip查找的双向平衡流水线结构

Vectored-Bloom Filter for IP Address Lookup: Algorithm and Hardware Architectures

Semantic Association Systems for Product Data Integration in the Socio-Sphere

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