Method for suggestion Alternative Servers to Enhance Connection Level Performance

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Last updated 2012-12-17 (latest revision 2012-06-15)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo presents a method for allowing an HTTP server to provide hints in its HTTP responses to a user-agent that indicate the user could be better off connecting to a different IP than what they are currently connected to. This is highly relevant in a multi-homed server world where DNS may not have all of the relevant state necessary to make a proper routing decision. Additionally it is done in a manner that does not require application level changes as could be the case for an application level redirect such as a 3xx response


Erik Nygren
Stephen Ludin
Matt Levine
Andy Champagne

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)