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#20 preparado RFC 1149 - A Standard for the Transmission of IP Datagr…
…ams on Avian Carriers
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--- | ||
layout: translation | ||
date: 1990-04-01 | ||
title: A Standard for the Transmission of IP Datagrams on Avian Carriers | ||
description: A Standard for the Transmission of IP Datagrams on Avian Carriers | ||
copyright: null | ||
license: null | ||
license-custom: null | ||
original: { | ||
title: "A Standard for the Transmission of IP Datagrams on Avian Carriers", | ||
link: "https://tools.ietf.org/html/rfc1149", | ||
dateOfTranslation: "2016-09-08" | ||
} | ||
authors: [{ | ||
name: "D. Waitzman", | ||
link: "#" | ||
}] | ||
sponsors: null | ||
translators: null | ||
reviewers: null | ||
isDraft: true | ||
discussion: https://github.com/webiwg/historia-web-pt/issues/20 | ||
--- | ||
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<pre> | ||
Network Working Group D. Waitzman | ||
Request for Comments: 1149 BBN STC | ||
1 April 1990 | ||
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A Standard for the Transmission of IP Datagrams on Avian Carriers | ||
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Status of this Memo | ||
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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. | ||
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Overview and Rational | ||
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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. | ||
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Frame Format | ||
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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. | ||
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Upon receipt, the duct tape is removed and the paper copy of the | ||
datagram is optically scanned into a electronically transmittable | ||
form. | ||
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Discussion | ||
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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- | ||
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Waitzman [Page 1] | ||
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RFC 1149 IP Datagrams on Avian Carriers 1 April 1990 | ||
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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. | ||
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Security Considerations | ||
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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. | ||
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Author's Address | ||
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David Waitzman | ||
BBN Systems and Technologies Corporation | ||
BBN Labs Division | ||
10 Moulton Street | ||
Cambridge, MA 02238 | ||
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Phone: (617) 873-4323 | ||
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EMail: [email protected] | ||
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Waitzman [Page 2] | ||
</pre> |