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NANOG Meeting Presentation Abstract

Research Forum: An Inter-domain Consistency Management Layer
Meeting: NANOG36
Date / Time: 2006-02-15 11:00am - 11:15am
Room: Regency Ballroom
Presenters: Speakers:
Nate Kushman, MIT.
Abstract: We propose an isolation layer—a shim—between inter-domain routing and packet forwarding. The job of this layer is to coordinate between Autonomous Systems on when and how to modify the forwarding state as to ensure inter-domain routing loops do not cause forwarding loops. The benefits of a consistency layer are two-fold. First, it prevents the creation of transient inter-domain forwarding loops and the resulting packet loss, high latency, and connection failures.
Second, by taking the burden of forwarding consistency off the inter-domain routing protocol, it enables inter-domain routing protocols with more complex convergence characteristics than BGP, such as protocols that optimize route selection based on performance.

We show that inter-domain routing loops cause real performance problems, and we offer two possible designs for the consistency layer. We prove that both designs are free of forwarding loops and show they are easy to deploy in the current Internet.
Files: pptNate Kushman Presentation(PPT)
youtubeResearch Forum: An Inter-domain Consistency Management Layer
Sponsors: None.

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