数据中心交换机的虚拟TCAM

2015 IEEE Conference on Network Function Virtualization and Software Defined Network (NFV-SDN) Pub Date : 2015-11-01 DOI:10.1109/NFV-SDN.2015.7387407

Q. Maqbool, Muhammad Sohaib Ayub, Junaid Zulfiqar, A. Shafi

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引用次数: 8

摘要

软件定义数据中心网络利用大量的规则来定义网络流的路由。SDN控制器在每个交换机上安装规则，以便最大限度地提高效率、延迟或能耗等指标。这要求每个交换机存储大量的规则，这对于当前的机架顶式(ToR)交换机来说是不可能的，因为它们通常具有2-4k规则的容量。在本文中，我们提出了T-Flex(柔性TCAM的缩写)，这是一种为数据中心交换机实现虚拟TCAM的技术。T-Flex可以将交换机的规则存储能力提高10倍，并且可以在大多数情况下以线速率转发传入流。此外，它为SDN环境提供了完全的OpenFlow兼容性，并且已经在数据中心生产级英特尔交换机上进行了测试。作为虚拟交换机的扩展，T-Flex可以在数据中心交换机中提供无限TCAM的假象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Virtual TCAM for Data Center switches

Software Defined Data Center Networks utilize a large number of rules to define routes for network flows. SDN controllers install rules at each switch in order to maximize metrics such as efficiency, delay or energy consumption. This requires each switch to store a substantial number of rules, which is not possible for current Top-of-Rack (ToR) switches as they usually have capacities of 2-4k rules. In this paper we present T-Flex (short for flexible TCAM), a technique for implementing virtual TCAM for data center switches. T-Flex can enhance the rule storage capabilities of a switch by up to 10x, and can forward incoming flows at line rate under most circumstances. Moreover, it provides full OpenFlow compatibility for use in SDN environments, and has been tested to work on a data center production grade Intel switch. Designed as an extension to virtual switches, T-Flex can provide the illusion of an unlimited TCAM in a data center switch.

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来源期刊

2015 IEEE Conference on Network Function Virtualization and Software Defined Network (NFV-SDN)

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