采用P4的数据平面NAT-DP技术方案  

P4-Based Data Plane NAT-DP Technical Solution

作　　者：陈本彬 王玉祥 钱辉祖 苏鹭梅 张磊 CHEN Benbin;WANG Yuxiang;QIAN Huizu;SU Lumei;ZHANG Lei(School of Electrical Engineering & Automation,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]厦门理工学院电气工程与自动化学院,福建厦门361024

出　　处：《厦门理工学院学报》2020年第5期40-46,共7页Journal of Xiamen University of Technology

基　　金：福建省自然科学基金项目(2018J01563);厦门市科技基金项目(3502Z20179031)。

摘　　要：针对协议转换(network address translation-protocol translation,NAT-PT)技术服务于IPv4和IPv6节点之间的通信,无法实现多协议节点之间的数据包通信,缺乏协议扩展功能的问题,提出一种基于P4的网络地址-可编程数据平面协议转换(network address translation-programmable data plane protocol translation,NAT-DP)技术方案。该方案运用可编程协议无关报文处理语言完成解析器、控制流和匹配动作表的定义,实现多协议数据包在数据平面的解析、协议转换与重组。实验结果表明,该技术方案可以有效解决NAT-PT的协议扩展性问题,并使管理员在数据平面实现协议转换机制的可重配置。Aiming at solving a problem in the protocol conversion technology( network address translation-protocol translation,NAT-PT) serving the communication between IPv4 and IPv6 nodes that the data packet communication between multi-protocol nodes cannot be realized nor the protocol extension function played,this article proposes a network address translation-programmable data plane protocol translation( NAT-DP). The programming protocolindependent packet processors( P4) is used to define the parser,control flow,and matching action table to realize the analysis,protocol conversion,and reorganization of multi-protocol packets in the data plane. The experimental results show that the NAT-DP technology can effectively solve the problem in protocol scalability of NAT-PT and enable the administrator to realize the reconfiguration of the protocol conversion mechanism in the data plane.

关 键 词：协议转换技术 NAT-DP 可编程协议无关报文处理语言(P4) 协议扩展性 多协议数据包 

分 类 号：TN915.04[电子电信—通信与信息系统]