【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。更多还原

【Abstract】 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.更多还原