摘要
时间敏感网络(Time Sensitive Network,TSN)将传统以太网“Best Effor”传输方式所具备的灵活性与时间敏感网络的实时性、确定性等特点相结合,具有支持不同类型应用的能力。TSN的逐流过滤和监管(Per-Stream Filter‐ing and Policing,PSFP)协议通过提供策略,可阻止非法报文的攻击及流量过载。基于该协议的工作原理,对流过滤、流门控和流测量功能进行了研究,同时提出一种PSFP的实现方法,并在TSN交换机上设计网络拓扑及实验进行了验证。结果表明,该方法可根据报文特征自动识别满足一定规则的异常报文,并按照要求进行阻断或限流操作,验证了合理性。该方法不受限于硬件或软件实现的TSN,对TSN在工业、车载等行业的应用有一定的参考价值。
Time Sensitive Network(TSN)combines the flexibility of traditional Ethernet“Best Effort”transmission methods with the real-time and deterministic characteristics of time sensitive networks,and has the ability to support different types of ap‐plications.The Per-Stream Filtering and Policing(PSFP)protocol of TSN can prevent illegal packet attacks and traffic overload by providing certain strategies.Based on the working principle of the protocol,the functions of stream filters,stream gates and flow metering are studied,and an implementation method of PSFP is proposed.Besides,the network topology is designed and verified through experiments on TSN switches.The results show that this design can successfully match abnormal packets that meet the rules,and block or limit the bandwidth of them according to requirements,which can prove the effectiveness of the de‐sign.This method is not limited to TSN implemented by hardware or software,and has certain reference value for the application of TSN in sectors such as industry and vehicle.
作者
石环环
冯睦睦
Shi Huanhuan;Feng Mumu(China Electronics Technology Group Corporation No.58 Research Institute,Wuxi 214035,China)
出处
《电子技术应用》
2024年第11期74-79,共6页
Application of Electronic Technique
关键词
时间敏感网络
逐流过滤和监管
流过滤
流门控
流测量
time sensitive network
per-stream filtering and policing
stream filters
stream gates
flow metering
