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RFC2549 - IP over Avian Carriers with Quality of Service

王朝other·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

Network Working Group D. Waitzman

Request for Comments: 2549 IronBridge Networks

Updates: 1149 1 April 1999

Category: EXPerimental

IP over Avian Carriers with Quality of Service

Status of this Memo

This memo defines an Experimental Protocol for the Internet

community. It does not specify an Internet standard of any kind.

Discussion and suggestions for improvement are requested.

Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

This memo amends RFC1149, "A Standard for the Transmission of IP

Datagrams on Avian Carriers", with Quality of Service information.

This is an experimental, not recommended standard.

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.

For secure networks, carriers may have classes Prime or Choice.

Prime carriers are self-keying when using public key encryption.

Some distributors have been known to falsely classify Choice carriers

as Prime.

Packets MAY be marked for deletion using RED paint while enqueued.

Weighted fair queueing (WFQ) MAY be implemented using scales, as

shown:

__

_____/-----\ / o <____ _____\_/ >--

+-----+ \ / /______/

10g /:/

+-----+ /____/

10g

+-----+ .. X

===============================

^

=========

Carriers in the queue too long may leave log entries, as shown on the

scale.

The following is a plot of traffic shaping, from coop-erative host

sites.

Alt Plot of Traffic Shaping showing carriers in flight

2k ....................

. .

. .

1k . .

+---+ +---+

A B

+---+ +---+

_____________________________________________

Avian carriers normally bypass bridges and tunnels but will seek out

worm hole tunnels. When carrying web traffic, the carriers may

digest the spiders, leaving behind a more compact representation.

The carriers may be confused by mirrors.

Round-robin queueing is not recommended. Robins make for well-tuned

networks but do not support the necessary auto-homing feature.

A BOF was held at the last IETF but only Avian Carriers were allowed

entry, so we don't know the results other than we're sure they think

MPLS is great. Our attempts at attaching labels to the carriers have

been met with resistance.

NATs are not recommended either -- as with many protocols, modifying

the brain-embedded IP addresses is difficult, plus Avian Carriers MAY

eat the NATs.

Encapsulation may be done with saran wrappers. Unintentional

encapsulation in hawks has been known to occur, with decapsulation

being messy and the packets mangled.

Loose source routes are a viable evolutionary alternative enhanced

standards-based MSWindows-compliant technology, but strict source

routes MUST NOT be used, as they are a choke-point.

The ITU has offered the IETF formal alignment with its corresponding

technology, Penguins, but that won't fly.

Multicasting is supported, but requires the implementation of a clone

device. Carriers may be lost if they are based on a tree as it is

being pruned. The carriers propagate via an inheritance tree. The

carriers have an average TTL of 15 years, so their use in expanding

ring searches is limited.

Additional quality of service discussion can be found in a Michelin's

guide.

MIB and Management issues

AvCarrier2 OBJECT-TYPE

SYNTAX SEQUENCE OF DNA

MAX-Access can't-read

STATUS living

DESCRIPTION "Definition of an avian carrier"

::= { life eukaryotes mitochondrial_eukaryotes crown_eukaryotes

metazoa chordata craniata vertebrata gnathostomata

sarcopterygii terrestrial_vertebrates amniota diapsida

archosauromorpha archosauria dinosauria aves neornithes

columbiformes columbidae columba livia }

AvCarrier OBJECT-TYPE

SYNTAX SET OF Cells

MAX-ACCESS not-accessible

STATUS obsolete

DESCRIPTION "Definition of an avian carrier"

::= { life animalia chordata vertebrata aves

columbiformes columbidae columba livia }

PulseRate OBJECT-TYPE

SYNTAX Gauge(0..300)

MAX-ACCESS read-only

STATUS current

DESCRIPTION "Pulse rate of carrier, as measured in neck.

Frequent sampling is disruptive to operations."

::= { AvCarrier 1}

The carriers will not line up in lexigraphic order but will

naturally order in a large V shape. Bulk retrieval is possible

using the Powerful Get-Net operator.

Specification of Requirements

In this document, several Words are used to signify the requirements

of the specification. These words are often capitalized.

MUST Usually.

MUST NOT Usually not.

SHOULD Only when Marketing insists.

MAY Only if it doesn't cost extra.

Security Considerations

There are privacy issues with stool pigeons.

Agoraphobic carriers are very insecure in operation.

Patent Considerations

There is ongoing litigation about which is the prior art: carrier or

egg.

References

Waitzman, D., "A Standard for the Transmission of IP Datagrams on

Avian Carriers", RFC1149, 1 April 1990.

ACKnowledgments

Jim.Carlson.Ibnets.com > Jon.Saperia . ack 32 win 123 (DF)

Ross Callon, Scott Bradner, Charlie Lynn ...

Author's Address

David Waitzman

IronBridge Networks

55 Hayden Ave

Lexington, MA 02421

Phone: (781) 372-8161

EMail: djw@vineyard.net

Full Copyright Statement

Copyright (C) The Internet Society (1999). All Rights Reserved.

This document and translations of it may be copied and furnished to

others, and derivative works that comment on or otherwise explain it

or assist in its implementation may be prepared, copied, published

and distributed, in whole or in part, without restriction of any

kind, provided that the above copyright notice and this paragraph are

included on all such copies and derivative works. However, this

document itself may not be modified in any way, such as by removing

the copyright notice or references to the Internet Society or other

Internet organizations, except as needed for the purpose of

developing Internet standards in which case the procedures for

copyrights defined in the Internet Standards process must be

followed, or as required to translate it into languages other than

English.

The limited permissions granted above are perpetual and will not be

revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an

"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING

TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION

HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

 
 
 
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