Dynamic Link Allocation in Multichassis Bundles
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Solution Overview
Problem
Existing packet switching networks face challenges in dynamically managing active links across multiple devices in a multichassis link bundle to ensure efficient redundancy and even distribution of bandwidth, particularly in scenarios where device priorities and weighted values vary.
Innovation Solution
The method involves dynamically adjusting active members in a multichassis link bundle by selecting devices based on their priority and weighted values to add or remove links, ensuring an even distribution across multiple packet switching devices, using protocols like Link Aggregation Control Protocol (LACP) for secondary determinations when priorities are equal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If active links are statically allocated across multichassis devices, then device complexity is reduced, but network adaptability and load distribution efficiency deteriorate
Solution Approach 1:
The patent implements dynamic adjustment of active links in multichassis link bundles by monitoring device priorities and automatically adding or removing links based on current network conditions. This allows the system to adapt to changing loads and device states without manual intervention, resolving the contradiction between static simplicity and dynamic adaptability.
Solution Approach 2:
The system continuously monitors the state of multichassis link bundles and device priorities, using this feedback to automatically adjust which links are active. This closed-loop control enables the network to respond to changing conditions while maintaining automated management, balancing adaptability with controlled complexity.
2Reliability
If more active links are added to multichassis link bundle, then network redundancy is improved, but bandwidth distribution uniformity deteriorates
Solution Approach 1:
The patent applies different priorities to different devices in the multichassis bundle, allowing selective adjustment of active links based on individual device characteristics and current load conditions. This enables non-uniform distribution that optimizes both redundancy and load balance by treating different devices differently based on their specific needs.
Solution Approach 2:
The system dynamically changes the number of active links associated with each device based on monitored priorities and load conditions. By adjusting this parameter in response to network state, the system maintains both high redundancy and uniform bandwidth distribution across varying operational conditions.
3Productivity
If device priority is based solely on current number of active links, then load distribution is simplified, but network performance optimization deteriorates
Solution Approach 1:
The patent introduces asymmetric weighted values for different devices beyond just counting active links. This allows the system to account for varying device capabilities, roles, and performance characteristics, optimizing network performance by giving appropriate priority weightings that reflect actual device differences rather than treating all devices symmetrically.
Data Source
AI summary
In one embodiment, active links are added to, and removed from, a multichassis link bundle with one side of the multichassis link bundle terminated on multiple devices of a multichassis device. In one embodiment, adding active links includes selecting which particular device to which to add an active link to the multichassis link bundle based on a device priority of each of the multiple devices, with a device priority of a given device being based on a current number of active links associated with the given device.