基于P4的主动网络遥测机制  

Paradigm for proactive telemetry based on P4

作　　者：刘争争 毕军[1,3] 周禹 王旸旸[1,3] 林耘森箫 LIU Zhengzheng;BI Jun;ZHOU Yu;WANG Yangyang;LIN Yunsenxiao(Institute for Network Sciences and Cyberspace,Tsinghua University,Beijing 100084,China;Department of Computer Science and Technology,Tsinghua University,Beijing 100084,China;Beijing National Research Center for Information Science and Technology(BNRist),Beijing 100084,China)

机构地区：[1]清华大学网络科学与网络空间研究院,北京100084 [2]清华大学计算机科学与技术系,北京100084 [3]北京信息科学与技术国家研究中心,北京100084

出　　处：《通信学报》2018年第A01期162-169,共8页Journal on Communications

基　　金：国家重点研发计划基础前沿类基金资助项目(No.2017YFB0801701);国家自然科学基金资助项目(No.61472213);赛尔网络下一代互联网技术创新项目(No.NGII20160123)~~

摘　　要：随着以可编程协议无关报文处理语言(P4,programming protocol-independent packet processors)为主要编程语言的可编程数据平面的兴起,给网络遥测领域带来了新的发展机遇。带内网络遥测(INT, In-band network telemetry)就是其中一种具有代表性的能够探测到设备级遥测数据的被动遥测技术。然而INT的探测范围受到探测点部署位置的限制,难以获取全局网络视图。同时将遥测指令和数据封装到正常数据分组所带来较高的探测开销以及部署和运维的复杂性导致可扩展性不好。为此,提出了一种基于P4的能够覆盖全网且可扩展性强的主动网络遥测平台Net Vision。With the rise of programmable data plane with P4 as the main programming language,it brings new opportunities for network telemetry.INT is one of the typical passive telemetry techniques that can detect device-level telemetry data.However,the detection scope of INT is limited by the deploy field of vantage points.Therefore,it is hard to achieve the global network view.At the same time,encapsulating telemetry instructions and data into normal packets brings high telemetry overhead and high operation complexity.As a result,INT has low scalability.For this reason,a proactive network telemetry platform NetVision was proposed based on P4 that can cover the whole network and has good scalability.

关 键 词：可编程协议无关报文处理语言 可编程数据平面 全局网络视图 可扩展性 主动网络遥测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]