Network QoS, fairness and resource sharing control are not completely solved problems. Available solutions lack scalability due to maintaining flow state, require re-tuning if traffic changes, focus on a limited set of networking scenarios or require complex, centralized controllers and feedback loops. In this paper, we propose a core-stateless solution for closed network domains like access, enterprise and data center networks that handles resource sharing and provides guarantees for per-hop latency, independently. The proposed method enables controlled resource sharing by encoding the utility function of flows to Packet Value markings. This allows expressing resource sharing policies for all possible congestion situations, while operation is completely flow unaware inside the network. In addition, it also satisfies per-hop delay requirements for traffic flows independently. The separation of the delay requirements of the packets from their importance has not generally been possible by existing methods so far. The performance of the proposed method has thoroughly been analyzed by large number of simulations covering both static and dynamic scenarios and was implemented in a cloud-native virtual router implementing all the policies needed for a Broadband Network Gateway, showing good performance and better scalability than existing weighted queuing-based solutions.

中文翻译：

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重新审视 QoS 的核心无状态转发：解耦延迟和带宽要求


网络的QoS、公平性和资源共享控制等问题还没有完全解决。现有的解决方案由于维护流状态而缺乏可扩展性，如果流量发生变化则需要重新调整，专注于一组有限的网络场景或需要复杂的集中式控制器和反馈循环。在本文中，我们为接入、企业和数据中心网络等封闭网络域提出了一种核心无状态解决方案，该解决方案独立处理资源共享并为每跳延迟提供保证。所提出的方法通过将流的效用函数编码为数据包值标记来实现受控资源共享。这允许针对所有可能的拥塞情况表达资源共享策略，而操作完全在网络内部不知情的情况下进行。此外，它还独立满足流量的每跳延迟要求。迄今为止，现有方法通常还不可能将分组的延迟要求与其重要性分开。所提出方法的性能通过涵盖静态和动态场景的大量模拟进行了彻底分析，并在云原生虚拟路由器中实现，实现了宽带网络网关所需的所有策略，显示出比现有方法更好的性能和可扩展性基于加权排队的解决方案。