EVPN Mobility Zone Multihoming for Wireless Traffic Drop Reduction
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Solution Overview
Problem
Networking systems face challenges in reducing or eliminating traffic drops when mobile devices transition between wireless access points, particularly in large warehouse environments with numerous mobile devices and MAC/IP address mobility.
Innovation Solution
The implementation of a controller that learns the path of mobile devices, identifies target VTEPs and access points, assigns them to a mobility zone, and sets up a multihoming configuration to reduce traffic drops by ensuring continuous data transmission during device roaming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile devices roam between wireless access points in a warehouse environment, then device mobility and coverage are improved, but traffic drops and communication interruptions occur
Solution Approach 1:
The system performs preliminary actions by establishing multihoming configurations and pre-configuring mobility zones before mobile devices need to roam. The controller learns device paths in advance and sets up multiple VTEP assignments proactively, so when roaming occurs, traffic continuity is maintained without drops.
Solution Approach 2:
The controller acts as an intermediary between mobile devices and the network infrastructure. It manages the complexity of multihoming configurations and mobility zone assignments, coordinating between multiple VTEPs and access points to ensure seamless handovers without requiring direct complex interactions between mobile devices and network elements.
2Reliability
If multihoming configuration is implemented to reduce traffic drops, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The system implements self-service through automated controller management of multihoming configurations. The controller automatically learns mobile device paths, identifies appropriate VTEPs, and assigns them to mobility zones without manual intervention. This automation reduces the operational complexity despite the sophisticated underlying multihoming infrastructure.
Solution Approach 2:
The mobility zone concept provides universality by creating a logical abstraction that works across multiple VTEPs and access points. A single mobility zone can encompass multiple access points serviced by multiple VTEPs, providing a universal framework that simplifies the management of complex multihoming configurations across the entire warehouse network.
3Reliability
If multiple VTEPs are assigned to mobility zones to ensure continuous transmission, then data transmission reliability is improved, but network resource consumption increases
Solution Approach 1:
The system applies local quality by assigning VTEPs to mobility zones based on local conditions such as device location, access point coverage areas, and path information. Not all VTEPs are assigned to all mobility zones - assignments are made locally optimal based on the specific geographic and network conditions of each zone, reducing unnecessary network resource consumption.
Solution Approach 2:
The network is segmented into multiple mobility zones, each with its own assigned VTEPs. This segmentation allows the system to manage network resources more efficiently by limiting the scope of multihoming configurations to specific geographic areas rather than applying them network-wide. Each mobility zone independently manages its VTEP assignments, reducing overall network resource consumption.
Data Source
AI summary
Mobility traffic drop solutions for EVPN-based networking systems that reduce delays related to a device reassociating from one access point to a different access point. For example, a method may include learning information related to a path of a mobile device configured to travel in a physical space along the path; identifying a plurality of access points having coverage areas that provide service to locations along the path and a plurality of networking tunnel endpoints servicing the plurality of access points; assigning the plurality of networking tunnel endpoints to a mobility zone associated with the mobile device; and transmitting data from a source to at least two of the networking tunnel endpoints of the mobility zone.