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- Path: sparky!uunet!noc.near.net!nic.near.net!not-for-mail
- From: anselmo@nic.near.net (Ed Anselmo)
- Newsgroups: comp.mail.uucp
- Subject: Re: Mixed format addresses
- Date: 2 Jan 1993 14:16:24 -0500
- Organization: NEARnet, Cambridge, MA
- Lines: 126
- Message-ID: <1i4pm8INNeea@nic.near.net>
- References: <H9TkwB1w165w@willard.UUCP> <725768036snx@crynwr.com>
- <sSbRrA7MBh107h@boombox.apana.org.au>
- NNTP-Posting-Host: nic.near.net
- In-reply-to: djk@boombox.apana.org.au's message of 1 Jan 93 23:28:44 GMT
-
- In <725768036snx@crynwr.com> nelson@crynwr.com (Russell Nelson) writes:
- >> I don't
- >> CARE how you get your email. You could get it via carrier pigeon
- >> for all I care. Would you advocate registering the .PIGEON domain if
- >> you did?
-
- >Is this officially sanctioned in RFC 1149? From the RFC index:
-
- >1149 Waitzman, D. Standard for the transmission of IP datagrams on avian
- > carriers. 1990 April 1; 2 p. (Format: TXT=3329 bytes)
-
- >I propose that we make this domain more general by calling it .AVIAN.
-
- RFC 1149 is concerned with layer 3 (network) issues, so the DNS
- namespace isn't a concern at this level. RFC 1149 follows:
-
-
- Network Working Group D. Waitzman
- Request for Comments: 1149 BBN STC
- 1 April 1990
-
-
- 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
- form.
-
- Discussion
-
- 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 1 April 1990
-
-
- 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
-
- David Waitzman
- BBN Systems and Technologies Corporation
- BBN Labs Division
- 10 Moulton Street
- Cambridge, MA 02238
-
- Phone: (617) 873-4323
-
- EMail: dwaitzman@BBN.COM
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- Waitzman [Page 2]
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