A Standard for the Transmission of IP Datagrams on Avian Carriers

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  1. eyes-open

    eyes-open Registered Member

    May 13, 2005
    Network Working Group D. Waitzman
    Request for Comments: 1149 BBN STC

    A Standard for the Transmission of IP Datagrams on Avian Carriers

    Status of this Memo

    This memo describes an experimental method for the encapsulation of
    IP datagrams in avian carriers. This specification is primarily
    useful in Metropolitan Area Networks. This is an experimental, not
    recommended standard. Distribution of this memo is unlimited.

    Overview and Rational

    Avian carriers can provide high delay, low throughput, and low
    altitude service. The connection topology is limited to a single
    point-to-point path for each carrier, used with standard carriers,
    but many carriers can be used without significant interference with
    each other, outside of early spring. This is because of the 3D ether
    space available to the carriers, in contrast to the 1D ether used by
    IEEE802.3. The carriers have an intrinsic collision avoidance
    system, which increases availability. Unlike some network
    technologies, such as packet radio, communication is not limited to
    line-of-sight distance. Connection oriented service is available in
    some cities, usually based upon a central hub topology.

    Frame Format

    The IP datagram is printed, on a small scroll of paper, in
    hexadecimal, with each octet separated by whitestuff and blackstuff.
    The scroll of paper is wrapped around one leg of the avian carrier.
    A band of duct tape is used to secure the datagram's edges. The
    bandwidth is limited to the leg length. The MTU is variable, and
    paradoxically, generally increases with increased carrier age. A
    typical MTU is 256 milligrams. Some datagram padding may be needed.

    Upon receipt, the duct tape is removed and the paper copy of the
    datagram is optically scanned into a electronically transmittable


    Multiple types of service can be provided with a prioritized pecking
    order. An additional property is built-in worm detection and
    eradication. Because IP only guarantees best effort delivery, loss
    of a carrier can be tolerated. With time, the carriers are self-

    Waitzman [Page 1]

    RFC 1149 IP Datagrams on Avian Carriers

    regenerating. While broadcasting is not specified, storms can cause
    data loss. There is persistent delivery retry, until the carrier
    drops. Audit trails are automatically generated, and can often be
    found on logs and cable trays.

    Security Considerations

    Security is not generally a problem in normal operation, but special
    measures must be taken (such as data encryption) when avian carriers
    are used in a tactical environment.

    Author's Address

    (removed for reasons of privacy)

    Original Source = www.rfc-editor.org
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