<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.3059" name=GENERATOR></HEAD>
<BODY>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff>CEV has a requirement to support IPv4 with a transition
to IPv6 for lunar. By going early they avoid the cost to support both
solutions and an awkward program transition. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff>Mobile IP is included and standardized in IPv6 whereas in IPv4 it
is supported only under proprietary solutions.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff>IPv6 eliminates private addresses.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff>I'm not suggesting it can't work either way, I'm only indicating
how it currently from my vantage.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=742495717-07062007><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Donald P Olsen
[mailto:Donald.P.Olsen@aero.org] <BR><B>Sent:</B> Thursday, June 07, 2007 10:53
AM<BR><B>To:</B> Schneider, Larry<BR><B>Cc:</B> David Carek; CCSDS Cislunar
Space Internetworking WG; sis-csi-bounces@mailman.ccsds.org<BR><B>Subject:</B>
RE: [Sis-csi] IPv6?<BR></FONT><BR></DIV>
<DIV></DIV><BR><FONT face=sans-serif size=2>Greetings</FONT> <BR><BR><FONT
face=sans-serif size=2>Moorse(sp) law is a great mitigator to address space cost
in space.</FONT> <BR><BR><FONT face=sans-serif size=2>Don</FONT> <BR><BR><BR>
<TABLE width="100%">
<TBODY>
<TR vAlign=top>
<TD width="40%"><FONT face=sans-serif size=1><B>"Schneider, Larry"
<larry.schneider@nasa.gov></B> </FONT><BR><FONT face=sans-serif
size=1>Sent by: sis-csi-bounces@mailman.ccsds.org</FONT>
<P><FONT face=sans-serif size=1>06/07/2007 08:18 AM</FONT> </P>
<TD width="59%">
<TABLE width="100%">
<TBODY>
<TR>
<TD>
<DIV align=right><FONT face=sans-serif size=1>To</FONT></DIV>
<TD vAlign=top><FONT face=sans-serif size=1>"David Carek"
<David.A.Carek@nasa.gov>, "CCSDS Cislunar Space
Internetworking WG" <sis-csi@mailman.ccsds.org></FONT>
<TR>
<TD>
<DIV align=right><FONT face=sans-serif size=1>cc</FONT></DIV>
<TD vAlign=top>
<TR>
<TD>
<DIV align=right><FONT face=sans-serif size=1>Subject</FONT></DIV>
<TD vAlign=top><FONT face=sans-serif size=1>RE: [Sis-csi]
IPv6?</FONT></TR></TBODY></TABLE><BR>
<TABLE>
<TBODY>
<TR vAlign=top>
<TD>
<TD></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><BR><BR><FONT
size=2><TT>At this point it appears likely that CEV and MS will support IPv6
from<BR>the outset. An answer is expected in the summer
timeframe.<BR><BR><BR><BR>-----Original Message-----<BR>From:
sis-csi-bounces@mailman.ccsds.org<BR>[mailto:sis-csi-bounces@mailman.ccsds.org]
On Behalf Of David Carek<BR>Sent: Thursday, June 07, 2007 10:12 AM<BR>To: CCSDS
Cislunar Space Internetworking WG<BR>Subject: Re: [Sis-csi] IPv6?<BR><BR><BR>I
personally don't think address space is a driver in determining NASA's<BR>space
protocol needs. Space assets are very expensive and I doubt there<BR>will
be a significant number off addresses required. NASA already has
a<BR>significant allocation of v4 address it can use. Either version
will<BR>work from an address space point of view.<BR><BR>Edward Greenberg
wrote:<BR>> Marc, Maybe this is a dumb question but if the all the
Earth systems <BR>> are transferring to IPv6 is there anyone that is the
broker for <BR>> trading<BR>> IPv6 address space for IPv4 address space.
If so then by 2010 there <BR>> should be lots of IPv4 addresses
available. If NASA transforms itself<BR><BR>> to IPv6 then what happens
to all of NASA's IPv4 address? If JSC <BR>> transfers over to IPv6
would there be enough IPv4 addresses to <BR>> accommodate NASA's space
address space needs indefinitely?<BR>> <BR>> <BR>> <BR>> At 10:06 AM
-0400 6/7/07, Marc Blanchet wrote:<BR>>> Hi,<BR>>> as you
might have noticed, ARIN board recently advised the community<BR><BR>>>
that IPv4 addresses are going away and push the community to
consider<BR>>> IPv6 asap... The concensus currently is that IPv4 addresses
will be <BR>>> gone by 2010 from the IANA pool and then x months later
from the RIR <BR>>> pool. Given that space projects are "long term"
projects, at the <BR>>> time some IP address space will be needed for
space in, say 2012, <BR>>> then v4 addresses won't be available. only IPv6
addresses will be<BR>available.<BR>>> given the multi-international
scope of space projects, I can't <BR>>> imagine having IPv4 NATs between
spacecrafts that forces VoIP traffic<BR><BR>>> to go through earth just
because of traversing NAT... ouach....<BR>>> therefore, I think this
group should really consider:<BR>>> - ipv6 as the primary IP
protocol<BR>>> - ipv6 as possible only IP protocol<BR>>> - designing
a contingency plan if v4 is still considered.<BR>>><BR>>>
comments?<BR>>><BR>>> references:<BR>>> - ARIN board
resolution on IPv4/Ipv6: <BR>>>
http://www.arin.net/announcements/20070521.html<BR>>> - exhaustion of IPv4
address space timeline: <BR>>>
http://www.potaroo.net/tools/ipv4/index.html<BR>>><BR>>>
Marc.<BR>>><BR>>><BR>>>
_______________________________________________<BR>>> Sis-CSI mailing
list<BR>>> Sis-CSI@mailman.ccsds.org<BR>>>
http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-csi<BR>> <BR>>
<BR>> _______________________________________________<BR>> Sis-CSI mailing
list<BR>> Sis-CSI@mailman.ccsds.org<BR>>
http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-csi<BR><BR><BR>--
<BR> David A. Carek, P.E.<BR> NASA Glenn Research Center<BR>
216-433-8396 (Office)<BR> 216-978-8063
(Mobile)<BR><BR>_______________________________________________<BR>Sis-CSI
mailing
list<BR>Sis-CSI@mailman.ccsds.org<BR>http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-csi<BR><BR>_______________________________________________<BR>Sis-CSI
mailing
list<BR>Sis-CSI@mailman.ccsds.org<BR>http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-csi<BR></TT></FONT><BR></BODY></HTML>