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Internet over Carrier Pigeon? There’s a standard for that

pidgeonThere are standards for everything, it seems. And those of us who work on Internet things are often amused (or bemused) by what comes out of the Internet Engineering Task Force (IETF). An oldie but a goodie is a document from 1999, RFC-2549, “IP over Avian Carriers with Quality of Service.”

An RFC, or Request for Comment, is what the IETF calls a standards document. (And yes, I’m browsing my favorite IETF pages during a break from doing “real” work. It’s that kind of day.)

RFC-2549 updates RFC-1149, “A Standard for the Transmission of IP Datagrams on Avian Carriers.” That older standard did not address Quality of Service. I’ll leave it for you to enjoy both those documents, but let me share this part of RFC-2549:

Overview and Rational

The following quality of service levels are available: Concorde, First, Business, and Coach. Concorde class offers expedited data delivery. One major benefit to using Avian Carriers is that this is the only networking technology that earns frequent flyer miles, plus the Concorde and First classes of service earn 50% bonus miles per packet. Ostriches are an alternate carrier that have much greater bulk transfer capability but provide slower delivery, and require the use of bridges between domains.

The service level is indicated on a per-carrier basis by bar-code markings on the wing. One implementation strategy is for a bar-code reader to scan each carrier as it enters the router and then enqueue it in the proper queue, gated to prevent exit until the proper time. The carriers may sleep while enqueued.

Most years, the IETF publishes so-called April Fool’s RFCs. The best list of them I’ve seen is on Wikipedia. If you’re looking to take a work break, give ’em a read. Many of them are quite clever! However, I still like RFC-2549 the best.

A prized part of my library is “The Complete April Fools’ Day RFCs” compiled by by Thomas Limoncelli and Peter Salus. Sadly this collection stops at 2007. Still, it’s a great coffee table book to leave lying around for when people like Bob MetcalfeTim Berners-Lee or Al Gore come by to visit.

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