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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Routescience?
Changing routing information depending on traffic is rather dangerous; do they proivide adequate damping so the system does not oscillate? Is such damping guaranteed to work under a wide range of load patterns? NSFNET experiments with dynamic load balancing come to mind. Now, if I were an ISP operator I would be very unhappy if someone injects deliberately changing routes into my BGP mesh; while few such customers may be surviuvable (if their systems do not get to "metric-flap"), having many such customers is a sure way to overload core routers' CPUs. Time to institute MED fixing on customer BGP sessions? --vadim On Mon, 20 Aug 2001, Irwin Lazar wrote: > > Is anyone out there familiar with a company called "routescience"? I caught > the below press release at and wanted to find out if anyone can relay any > real-world experiences with their system? It almost sounds like they are > using something like a Keynote Systems performance monitoring tool to inject > BGP path preference information. > > TIA, > Irwin > > --- > ROUTESCIENCE DEVELOPS PLATFORM TO CONTROL BGP INTERNET ROUTING > RouteScience, a start-up based in San Mateo, California, unveiled > plans for a unique "route controller" platform for optimizing a > company's multiple ISP links by providing real-time performance > measurements of paths across the Internet to end users. Using > these performance metrics and customer preferences for ISP link > cost, RouteScience's PathControl platform determines the best ISP > path for end-users and can then automatically update the > organization's edge routers with the best path routing > information. The route performance measurement relies on a > patent-pending closed-feedback loop system that does not use > pings. Route updates are provided to the edge routers using > standard Border Gateway Protocol. A large company with multiple > ISPs would use the systems to route traffic to the ISP links that > actually deliver the best end-to-end performance. The solution > could also be used by a Tier-2/3 service provider to route > traffic to multiple backbone carriers depending on cost and real- > time performance metrics. The company said default BGP chooses a > sub-optimal route 50% - 80% of the time, depending on the number > of alternative ISP paths. Of those routes that can be improved, > an alternate ISP is on average 2 times faster. RouteScience > claims its system provides deep visibility into ISP performance > and could fundamentally change network service agreements and > pricing by moving control over Internet routing decisions to the > network edge. http://www.routescience.com > RouteScience, August 20, 2001 >
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