BGP Route Advertisement for Flexible Backbone POP Selection
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Solution Overview
Problem
In scenarios where service traffic needs to be transmitted across multiple network domains, existing solutions fail to provide satisfactory quality of service due to the inability of site edges to flexibly select backbone network points of presence (POPs) for accessing the backbone network, leading to suboptimal forwarding paths.
Innovation Solution
An information advertisement method that enables site edges to obtain binding relationships between remote site edges and backbone network POPs by using multiprotocol extensions for BGP and BGP-LS, allowing for flexible selection of backbone network POPs based on advertised information such as identifiers, service intentions, and load balancing weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If site edges use fixed backbone network POP assignments, then network configuration is simplified, but service quality and path optimization deteriorate
Solution Approach 1:
The patent implements dynamic POP selection by enabling site edges to receive and process routing information from multiple backbone network POPs, allowing them to flexibly choose optimal paths based on real-time service requirements and network conditions, thereby resolving the contradiction between configuration simplicity and service quality
Solution Approach 2:
The patent changes the routing parameter state from static (fixed POP assignment) to dynamic (flexible POP selection) by introducing mechanisms for site edges to receive, compare, and select from multiple routing information sources, improving service quality while maintaining manageable configuration complexity
2Reliability
If site edges flexibly select backbone network POPs, then service quality improves, but information management complexity increases
Solution Approach 1:
The patent enables site edges to autonomously receive, process, and select optimal routing information from multiple backbone network POPs without requiring complex centralized management, allowing flexible POP selection while keeping information management complexity at the site edge level rather than network-wide
Solution Approach 2:
The patent segments the routing decision-making process to individual site edges, where each site edge independently manages its own POP selection based on received routing information, thereby distributing information management complexity rather than concentrating it centrally
3Productivity
If multiple routing information sources are used, then path optimization improves, but processing overhead increases
Solution Approach 1:
The patent implements partial action by enabling site edges to receive routing information from multiple POPs but only actively process and select the most relevant optimal paths, avoiding the need to exhaustively analyze all possible routes, thus improving path optimization while limiting processing overhead
Data Source
AI summary
Embodiments of this application describe 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 first information of the first backbone network egress device in a backbone network and an identifier of the second site edge. It can be learned that according to the solutions in embodiments of this application, quality of service provided for service traffic transmitted through the end-to-end path can be improved.