Proposed change to AS Numbers

For information.

Whilst there has been much work done for IPv6 to establish a new protocol
which is less likely to run out of number space, the IETF are now working on
updating BGP to increase the possible number of Autonomous Systems.

>From the RIPE 37 meeting, there were a couple of statistics people who
weren't present should be aware of;

Globally 51% of IPv4 address space is allocated, of which 61.8% is actually
advertised routes on the Internet (hence 38.9% is 'missing'). Globally AS
numbers 30% are assigned, of which 46% are not actually advertised on the
Internet. This was the situation in September 2000.

http://www.apnic.net/stats/bgp/ may be of further interest.

Adrian F Pauling
AFP1-RIPE : uk.btent
BT Business Services - Information Systems Engineering 
Tel: +44 1926 851992
Mob: +44 7802 904877
http://www.bt.com


-----Original Message-----
From: Philip Smith [mailto:pfs at cisco.com]
Sent: 16 November 2000 19:55
To: apops at lists.apnic.net
Subject: [apops] Fwd: I-D ACTION:draft-chen-as4bytes-00.txt


Given the current growth in ASN assignments around the globe, this is 
appropriate reading for everyone in the region.

philip
--

>To: IETF-Announce:;
>From: Internet-Drafts at ietf.org
>Reply-to: Internet-Drafts at ietf.org
>Subject: I-D ACTION:draft-chen-as4bytes-00.txt
>Date: Thu, 16 Nov 2000 06:27:03 -0500
>Sender: nsyracus at cnri.reston.va.us
>
>A New Internet-Draft is available from the on-line Internet-Drafts 
>directories.
>
>
>         Title           : BGP support for four-octet AS number space
>         Author(s)       : E. Chen, Y. Rekhter
>         Filename        : draft-chen-as4bytes-00.txt
>         Pages           : 4
>         Date            : 15-Nov-00
>
>Currently the Autonomous System number is encoded in BGP as a two-
>octets field. This document describes extentions to BGP to carry the
>Autonomous System number as a four-octets field.
>
>A URL for this Internet-Draft is:
>http://www.ietf.org/internet-drafts/draft-chen-as4bytes-00.txt
>
>Internet-Drafts are also available by anonymous FTP. Login with the
username
>"anonymous" and a password of your e-mail address. After logging in,
>type "cd internet-drafts" and then
>         "get draft-chen-as4bytes-00.txt".
>
>A list of Internet-Drafts directories can be found in
>http://www.ietf.org/shadow.html
>or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>
>
>Internet-Drafts can also be obtained by e-mail.
>
>Send a message to:
>         mailserv at ietf.org.
>In the body type:
>         "FILE /internet-drafts/draft-chen-as4bytes-00.txt".
>
>NOTE:   The mail server at ietf.org can return the document in
>         MIME-encoded form by using the "mpack" utility.  To use this
>         feature, insert the command "ENCODING mime" before the "FILE"
>         command.  To decode the response(s), you will need "munpack" or
>         a MIME-compliant mail reader.  Different MIME-compliant mail
readers
>         exhibit different behavior, especially when dealing with
>         "multipart" MIME messages (i.e. documents which have been split
>         up into multiple messages), so check your local documentation on
>         how to manipulate these messages.
>
>
>Below is the data which will enable a MIME compliant mail reader
>implementation to automatically retrieve the ASCII version of the
>Internet-Draft.
>Content-Type: text/plain
>Content-ID:     <20001115091521.I-D at ietf.org>
>
>ENCODING mime
>FILE /internet-drafts/draft-chen-as4bytes-00.txt
>
><ftp://ftp.ietf.org/internet-drafts/draft-chen-as4bytes-00.txt>

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