BGP Route Recursion Control Through Policy Attribute Propagation
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Solution Overview
Problem
Manual configuration of route recursion policies on network devices is complex, time-consuming, labor-intensive, and error-prone, leading to inefficiencies in network management.
Innovation Solution
Implement a method where BGP routing information carries attribute information to control route recursion, allowing the automatic propagation of recursion policies across network devices, reducing the need for manual configuration and enhancing management accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual configuration of route recursion policies is performed on each network device, then network management control is precise, but the complexity and time consumption of configuration increases significantly
Solution Approach 1:
The network devices automatically propagate route recursion policies to each other through BGP routing information exchange. Each device that receives BGP routing information automatically applies the route recursion policy without requiring manual configuration, enabling the system to self-configure and reducing operational complexity while maintaining consistent policy application across the network
Solution Approach 2:
The BGP routing information protocol is extended to carry route recursion policy attributes, allowing a single configuration action to universally apply policies across multiple network devices. This multi-functional approach enables one device to simultaneously perform routing and policy propagation functions, eliminating the need for separate manual configuration processes on each device
2Reliability
If manual configuration of route recursion policies is performed on each network device, then policy application is controlled, but the time and labor required for configuration increases
Solution Approach 1:
The system implements a feedback mechanism where BGP routing information is continuously exchanged between network devices, carrying route recursion policy attributes. This automatic feedback loop ensures that policy changes propagate throughout the network in real-time, maintaining controlled policy application while dramatically improving configuration efficiency by eliminating repetitive manual operations
Solution Approach 2:
The route recursion policy is pre-configured on the originating network device and automatically embedded in BGP routing information before propagation. This preliminary action ensures that all subsequent devices receive and apply the correct policy without requiring manual configuration, thereby maintaining policy control while accelerating the overall configuration process
3Manufacturing precision
If manual configuration is used for route recursion policies, then configuration precision can be maintained, but human error increases
Solution Approach 1:
By enabling network devices to automatically receive and apply route recursion policies through BGP routing information exchange, the system eliminates human manual configuration operations. This self-service mechanism preserves configuration precision through automated process execution while completely removing the source of human error from the configuration process
Data Source
AI summary
A route recursion control method includes a first network device that receives Border Gateway Protocol (BGP) routing information from a second network device. The BGP routing information includes a destination address, a next-hop address for the destination address, and attribute information. The attribute information indicates a manner of performing route recursion on the next-hop address by the first network device. The first network device determines, based on the attribute information, the manner of performing the route recursion on the next-hop address.