BGP IFIT Parameter Delivery for Dynamic SR Policy Telemetry

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Solution Overview

Problem

Existing methods for configuring in-situ flow information telemetry (IFIT) parameters are difficult to adapt to dynamically changing networks, particularly when using command line or Netconf API.

Innovation Solution

The method extends the Border Gateway Protocol (BGP) UPDATE packet to dynamically deliver IFIT parameters by incorporating them into the Segment Routing (SR) policy subsequent address family identifier (SAFI) network layer reachability information (NLRI) field, allowing for dynamic configuration of IFIT parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If command line or Netconf API is used to configure IFIT parameters, then configuration can be performed, but the method cannot adapt to dynamically changing networks

Engineering Contradiction:

Improveadaptability to dynamically changing networksVSAvoidconfiguration method complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The BGP UPDATE packet is extended to carry both traditional BGP routing information and IFIT configuration parameters simultaneously. This allows a single protocol mechanism to serve multiple functions: route advertisement and telemetry configuration delivery, enabling dynamic adaptation without requiring separate configuration interfaces

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements dynamic IFIT parameter delivery by integrating configuration data into the BGP UPDATE packet flow. As BGP updates are dynamically generated and transmitted for routing changes, IFIT parameters are simultaneously updated along the same path, allowing the system to adapt automatically to network changes without static pre-configuration

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If IFIT parameters are delivered dynamically through BGP UPDATE packets, then adaptability to changing networks is improved, but the protocol complexity increases

Engineering Contradiction:

Improvedynamic configuration capabilityVSAvoidprotocol extension complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges IFIT configuration parameter delivery with the existing BGP UPDATE packet mechanism. By combining these functions into a single protocol extension, the solution leverages the already-deployed BGP infrastructure and processing capabilities, avoiding the need for separate complex configuration systems while achieving dynamic adaptability

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12542732B2Method for delivering IFIT configuration through BGP, electronic device and storage medium

Publication Date: 2026.02.03 NEW H3C TECH CO LTD

AI summary

The present application provides a method for delivering in-situ flow information telemetry (IFIT) configuration through a border gateway protocol (BGP), an electronic device and a storage medium. In an example of the present disclosure, by extending the BGP UPDATE packet in the BGP, the extended BGP UPDATE packet carries the IFIT parameters and is dynamically delivered to the headend in the SR policy, which realizes that the network device can dynamically deliver the IFIT parameters based on the BGP.