Invention Grant
- Patent Title: Application-aware BGP path selection and forwarding
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Application No.: US17520128Application Date: 2021-11-05
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Publication No.: US12010012B2Publication Date: 2024-06-11
- Inventor: Israel Means , Barry Elia
- Applicant: AT&T Intellectual Property I, L.P.
- Applicant Address: US GA Atlanta
- Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee Address: US GA Atlanta
- Agency: Guntin & Gust, PLC
- Agent Atanu Das
- Main IPC: H04L45/302
- IPC: H04L45/302 ; H04L45/02 ; H04L45/24 ; H04L45/42 ; H04L45/74

Abstract:
A routing structure is defined for provider edge (PE) routers that will create the ability to recompute best paths based on application criteria. The routing structure may include the use of a network controller which is connected with the internet to receive requests from applications to trigger path re-computation. The controller will peer with PEs to send re-computation information used by the PE to construct an application-aware BGP table and forwarding instance. The PE also defines a new BGP and packet filter to replicate specific BGP paths into the application-aware table. The application-aware BGP and forwarding instance is unique to the requesting application. Thus, each request with a different source/destination combination obtains a discrete table providing separation. When a packet enters the PE from customer edge (CE) or core interface the packet traverses a packet filter that when matched against source/destination is redirected to the appropriate application-aware forwarding table. Once in the application-aware table the packet is then forwarded along the application-aware path achieving the objective. The instantiation of the application-aware BGP and forwarding table is be done based on BGP updates learned from the controller.
Public/Granted literature
- US20230144568A1 APPLICATION-AWARE BGP PATH SELECTION AND FORWARDING Public/Granted day:2023-05-11
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