One document matched: draft-shirasaki-isp-shared-addr-08.xml
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<rfc category="bcp" docName="draft-shirasaki-isp-shared-addr-08" ipr="pre5378Trust200902">
<!-- ***** FRONT MATTER ***** -->
<front>
<title abbrev="ISP Shared Address">ISP Shared Address</title>
<author fullname="Ikuhei Yamagata" initials="I." surname="Yamagata">
<organization abbrev="NTT Communications">
NTT Communications Corporation</organization>
<address>
<postal>
<street>Gran Park Tower 17F, 3-4-1 Shibaura, Minato-ku</street>
<city>Tokyo</city>
<code>108-8118</code>
<country>Japan</country>
</postal>
<phone>+81 3 6700 8530</phone>
<email>ikuhei@nttv6.jp</email>
</address>
</author>
<author fullname="Shin Miyakawa" initials="S." surname="Miyakawa">
<organization abbrev="NTT Communications">
NTT Communications Corporation</organization>
<address>
<postal>
<street>Gran Park Tower 17F, 3-4-1 Shibaura, Minato-ku</street>
<city>Tokyo</city>
<code>108-8118</code>
<country>Japan</country>
</postal>
<phone>+81 50 3812 4695</phone>
<email>miyakawa@nttv6.jp</email>
</address>
</author>
<author fullname="Akira Nakagawa" initials="A." surname="Nakagawa">
<organization abbrev="Japan Internet Exchange (JPIX)">
Japan Internet Exchange Co., Ltd. (JPIX)</organization>
<address>
<postal>
<street>Otemachi Building 21F, 1-8-1 Otemachi, Chiyoda-ku</street>
<city>Tokyo</city>
<code>100-0004</code>
<country>Japan</country>
</postal>
<phone>+81 90 9242 2717</phone>
<email>a-nakagawa@jpix.ad.jp</email>
</address>
</author>
<author fullname="Jiro Yamaguchi" initials="J." surname="Yamaguchi">
<organization abbrev="Fiber 26 Network">Fiber 26 Network Inc.</organization>
<address>
<postal>
<street>Haraguchi bldg., 5F, 3-11-4 Kanda Jinbo-cho, Chiyoda-ku</street>
<city>Tokyo</city>
<code>101-0051</code>
<country>Japan</country>
</postal>
<phone>+81 50 3463 6109</phone>
<email>jiro-y@f26n.jp</email>
</address>
</author>
<author fullname="Hiroyuki Ashida" initials="H." surname="Ashida">
<organization abbrev="IS Consulting G.K."> IS Consulting G.K.</organization>
<address>
<postal>
<street>12-17 Odenma-cho, Nihonbashi, Chuo-ku</street>
<city>Tokyo</city>
<code>103-0011</code>
<country>Japan</country>
</postal>
<email>assie@hir.jp</email>
</address>
</author>
<date month="July" year="2012" />
<area>General</area>
<workgroup>Internet Engineering Task Force</workgroup>
<keyword>ISP,Shared,Address</keyword>
<abstract>
<t>This document defines IPv4 ISP Shared Address to be jointly used
among Internet Service Providers (ISPs).
This space is intended to be used in NAT444 model which is used during the transition period to IPv6.</t>
</abstract>
</front>
<middle>
<section title="Introduction">
<t>The only permanent solution of the IPv4 address exhaustion is
to deploy IPv6. Now, just before the exhaustion,
it's time to make a transition to IPv6.</t>
<t><xref target="I-D.shirasaki-nat444">NAT444 model
</xref> is one of the solutions for transition to IPv6.</t>
<t>This document defines ISP Shared Address to be used in <xref target="I-D.shirasaki-nat444-isp-shared-addr">NAT444 model</xref>.
It is supposed to be used between Customer Premises Equipment
(CPE) and
<xref target="I-D.ietf-behave-lsn-requirements">Carrier Grade NAT (CGN)</xref>.</t>
<t>ISP Shared Address is needed until the IPv4 Internet fades out.</t>
</section>
<section anchor="address" title="ISP Shared Address">
<section anchor="definition" title="Definition">
<t>ISP Shared Address is intended to be assigned
between CPE and CGN in a NAT444.</t>
</section>
<section anchor="details" title="Details">
<t>- Each ISP can use ISP Shared Address without any coordination with IANA or Internet registries.</t>
<t>- ISP Shared Address can be used by many ISPs.</t>
<t>- ISP has to install CGN to use ISP Shared Address.</t>
<t>- ISP Shared Address must not be used at customers'
site or Internet Exchanges.</t>
<t>- Routing information of ISP Shared Address must
not be advertised to the Internet.</t>
<t>- Reverse DNS queries for this address space
must not be sent to root DNS servers.</t>
<t>- Packets with this space as source address and/or
destination address must be filtered out
at the border of each ISP.</t>
<t>- Addresses within this address space should be unique
within the ISP, or the set of ISPs which choose
to cooperate over this space so they may directly
communicate with each other in their networks.</t>
</section>
</section>
<section anchor="size" title="Size of Address Space">
<t>
Because the aggregation size of Tokyo area POP is around /10 in Japan,
/10 should be the hard limit of minimum size ISP Shared Address.
We understand this can be determined by further discussions.</t>
</section>
<section anchor="Acknowledgements" title="Acknowledgements">
<t>Thanks for the input and review by Shirou Niinobe,
Takeshi Tomochika, Tomohiro Fujisaki, Dai Nishino,
JP address community members, AP address community members
and JPNIC members.</t>
</section>
<section anchor="IANA" title="IANA Considerations">
<t>IANA is to record the allocation of the IPv4 global unicast address as ISP Shared Address in the IPv4 address registry.</t>
</section>
<section anchor="Security" title="Security Considerations">
<t>ISP Shared Address is supposed to be used with CGN. The Global IPv4 address that is assigned outside CGN may be used as source address of 'Denial of Service' attack.</t>
</section>
</middle>
<!-- *****BACK MATTER ***** -->
<back>
<references title="Normative References">
&I-D.ietf-behave-lsn-requirements;
</references>
<references title="Informative References">
&I-D.shirasaki-nat444-isp-shared-addr;
&I-D.shirasaki-nat444;
<reference anchor="PROP58" target="http://www.apnic.net/policy/proposals/prop-058-v001.html">
<front>
<title>Proposal to create IPv4 shared use address space among LIRs</title>
<author initials="S." surname="Niinobe"><organization></organization></author>
<author initials="T." surname="Tomochika"><organization></organization></author>
<author initials="J." surname="Yamaguchi"><organization></organization></author>
<author initials="D." surname="Nishino"><organization></organization></author>
<author initials="H." surname="Ashida"><organization></organization></author>
<author initials="A." surname="Nakagawa"><organization></organization></author>
<author initials="T." surname="Hosaka"><organization></organization></author>
<date year="2008" />
</front>
</reference>
</references>
<!-- Change Log
v00 2008-06-09 YS Initial version
v00 2008-10-24 YS Divided into NAT444 and this document
v02 2009-03-07 YS s/CGN/LSN/
-->
</back>
</rfc>
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