draft-ietf-idr-as-representation-00.txt   draft-ietf-idr-as-representation-01.txt 
IDR G. Huston IDR G. Huston
Internet-Draft G. Michaelson Internet-Draft G. Michaelson
Intended status: Best Current APNIC Intended status: Standards Track APNIC
Practice September 9, 2008 Expires: March 27, 2009 September 23, 2008
Expires: March 13, 2009
Textual Representation of AS Numbers Textual Representation of AS Numbers
draft-ietf-idr-as-representation-00.txt draft-ietf-idr-as-representation-01.txt
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
This Internet-Draft will expire on March 13, 2009. This Internet-Draft will expire on March 27, 2009.
Copyright Notice
Copyright (C) The IETF Trust (2008).
Abstract Abstract
A textual representation for Autonomous System (AS) numbers is A textual representation for Autonomous System (AS) numbers is
defined as the decimal value of the AS Number. This textual defined as the decimal value of the AS Number. This textual
representation is to be used by all documents, systems and user representation is to be used by all documents, systems and user
interfaces referring to AS numbers. interfaces referring to AS numbers.
1. Introduction 1. Introduction
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proposes the adoption of a decimal value notation for AS numbers, or proposes the adoption of a decimal value notation for AS numbers, or
"asplain" according to the representation taxonomy described here. "asplain" according to the representation taxonomy described here.
2. Taxonomy of Representation Formats 2. Taxonomy of Representation Formats
A taxonomy of representation for AS numbers is as follows: A taxonomy of representation for AS numbers is as follows:
asplain asplain
refers to a syntax scheme of representing all AS numbers using refers to a syntax scheme of representing all AS numbers using
decimal integer notation. Using asplain notation an AS number of decimal integer notation. Using asplain notation an AS number of
value 65526 would be represented as the string "65526" and as AS value 65526 would be represented as the string "65526" and an AS
number of value 65546 would be represented as the string "65546". number of value 65546 would be represented as the string "65546".
asdot+ asdot+
refers to a syntax scheme of representing all AS numbers using a refers to a syntax scheme of representing all AS numbers using a
notation of two integer values joined by a period character: <high notation of two integer values joined by a period character: <high
order 16-bit value in decimal>.<low order 16-bit value in order 16-bit value in decimal>.<low order 16-bit value in
decimal>. Using asdot+ notation, an AS number of value 65526 decimal>. Using asdot+ notation, an AS number of value 65526
would be represented as the string "0.65526" and an AS number of would be represented as the string "0.65526" and an AS number of
value 65546 would be represented as the string "1.10". value 65546 would be represented as the string "1.10".
asdot asdot
refers to a syntax scheme of representing AS number values less refers to a syntax scheme of representing AS number values less
than 65536 using asplain notation and representing AS number than 65536 using asplain notation and representing AS number
values equal to or greater than 65536 using asdot+ notation. values equal to or greater than 65536 using asdot+ notation.
Using asdot notation, an AS number of value 65526 would be Using asdot notation, an AS number of value 65526 would be
represented as the string "65526" and as AS number of value 65546 represented as the string "65526" and an AS number of value 65546
would be represented as the string "1.10". would be represented as the string "1.10".
3. Representation of AS Number Values 3. Representation of AS Number Values
To avoid confusion, a single textual notation is useful for To avoid confusion, a single textual notation is useful for
documentation, configuration systems, reports, and external tools and documentation, configuration systems, reports, and external tools and
information repositories. The decimal value representation, or information repositories. The decimal value representation, or
"asplain" is proposed as the textual notiation to use for AS Numbers. "asplain" is proposed as the textual notation to use for AS Numbers.
The "asplain" representation represents the number as its decimal The "asplain" representation represents the number as its decimal
value, without any field delimiter, corresponding to to lack of any value, without any field delimiter, corresponding to the lack of any
internal fields defined by the semantics AS numbers. internal structure required by the use of AS numbers in the inter-
domain routing context.
4. IANA Considerations 4. IANA Considerations
IANA Registries should use decimal representation ("asplain") for AS IANA Registries should use decimal representation ("asplain") for AS
numbers. numbers.
5. Security Considerations 5. Security Considerations
This document does not refer to matters associated with security of This document does not refer to matters associated with security of
routing systems. routing systems.
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attempt made to obtain a general license or permission for the use of attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at specification can be obtained from the IETF on-line IPR repository at
http://www.ietf.org/ipr. http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at this standard. Please address the information to the IETF at
ietf-ipr@ietf.org. ietf-ipr@ietf.org.
Acknowledgment
Funding for the RFC Editor function is provided by the IETF
Administrative Support Activity (IASA).
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