A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : The A+P Approach to the IPv4 Address Shortage
Author(s) : R. Bush, et al.
Filename : draft-ymbk-aplusp-03.txt
Pages : 28
Date : 2009-03-09
We are facing the exhaustion of the IANA IPv4 free IP address pool.
Unfortunately, IPv6 is not yet deployed widely enough to fully
replace IPv4, and it is unrealistic to expect that this is going to
change before we run out of IPv4 addresses. Letting hosts seamlessly
communicate in an IPv4-world without assigning a unique globally
routable IPv4 address to each of them is a challenging problem.
This draft discusses the possibility of address sharing by treating
some of the port number bits as part of an extended IPv4 address
(Address plus Port, or A+P). Instead of assigning a single IPv4
address to a device, we propose to extended the address by "stealing"
bits from the port number in the TCP/UDP header, leaving the
applications a reduced range of ports. This means assigning the same
IP to different clients (e.g., CPE's, mobile phones), each with its
port-range. In the face of IPv4 address exhaustion, the need for
addresses is stronger than the need to be able to address thousands
of applications on a single host. If address translation is needed,
the end-user should be in control of the translation process - not
some smart boxes in the core.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ymbk-aplusp-03.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-ymbk-aplusp-03.txt>
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