Site Edge Route Binding for QoS-Aware End-to-End Path Orchestration
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Solution Overview
Problem
The quality of service provided by networks when transmitting service traffic across multiple domains is inadequate, failing to meet service requirements in scenarios such as enterprise migration to multi-cloud and user access to related services.
Innovation Solution
An information advertisement method that enables a first site edge to obtain binding relationships with backbone network egress devices, allowing for the orchestration of end-to-end paths that satisfy service requirements by using segment identifiers, routing priorities, and load balancing weights, and encapsulating packets based on these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If service traffic is transmitted across multiple network domains using conventional routing, then network coverage and connectivity are improved, but quality of service deteriorates due to lack of service-specific path optimization
Solution Approach 1:
The patent segments the routing process into two distinct phases: path computation at the ingress edge device using service requirements and binding relationships, and simple forwarding at backbone network devices using segment identifiers. This segmentation allows service-specific path optimization at the edges while maintaining simple, efficient forwarding in the backbone, resolving the contradiction between network coverage and quality of service.
Solution Approach 2:
The patent introduces binding relationships as an intermediary mechanism that connects service requirements with network path selection. The binding relationship associates service flow identifiers with specific egress devices and segment identifiers, enabling the ingress device to compute optimal paths that satisfy service requirements without requiring backbone devices to understand service details, thus improving quality of service while maintaining network coverage.
2Reliability
If end-to-end paths are orchestrated based on binding relationships and service requirements, then quality of service is improved, but device complexity increases at edge devices
Solution Approach 1:
The patent extracts complex path computation and service requirement processing functions from backbone network devices and concentrates them at edge devices. The ingress edge device performs path computation by obtaining binding relationships and computing segment identifier sequences, while backbone devices are relieved of this complexity and only perform simple segment-based forwarding, thus improving quality of service without distributing complexity throughout the network.
Solution Approach 2:
The patent implements preliminary action by pre-establishing binding relationships between service flows and egress devices, and pre-computing path information including segment identifier sequences at the ingress device before traffic forwarding begins. This preliminary path computation enables quality of service guarantees while simplifying real-time forwarding operations at all network devices.
3Productivity
If service-specific path orchestration is implemented, then traffic forwarding efficiency is improved, but network configuration complexity increases
Solution Approach 1:
The patent changes the parameter representation from traditional IP routing tables to segment identifiers that are bound to service requirements and egress devices. By using segment identifiers as the forwarding parameter and establishing binding relationships that map service flows to these identifiers, the system achieves service-specific path optimization and improved forwarding efficiency while maintaining a manageable configuration model through automated binding relationship establishment.
Data Source
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AI summary
Embodiments of this application disclose an information advertisement method. The method may be applied to a first communication apparatus used as a first site edge. The first communication apparatus may receive a first route advertised by a second communication apparatus, and obtain a first binding relationship between a second site edge and a first backbone network egress device based on the first route, where the first route includes that the first backbone network egress device in a backbone network accesses the backbone network, and the first site edge accesses the backbone network via a first backbone network ingress device. It can be learned that according to the solutions in embodiments of this application, the first site edge can obtain the first binding relationship, to help subsequently orchestrate an end-to-end path from the first site edge to the second site edge based on the first binding relationship, so that an end-to-end path obtained through the orchestration better satisfies a service requirement. Accordingly, quality of service provided for service traffic transmitted through the end-to-end path can be improved.