<br><font size=2 face="sans-serif">Greetings</font>
<br>
<br><font size=2 face="sans-serif">Moorse(sp) law is a great mitigator
to address space cost in space.</font>
<br>
<br><font size=2 face="sans-serif">Don</font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>"Schneider, Larry"
<larry.schneider@nasa.gov></b> </font>
<br><font size=1 face="sans-serif">Sent by: sis-csi-bounces@mailman.ccsds.org</font>
<p><font size=1 face="sans-serif">06/07/2007 08:18 AM</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td valign=top><font size=1 face="sans-serif">"David Carek" <David.A.Carek@nasa.gov>,
"CCSDS Cislunar Space Internetworking WG" <sis-csi@mailman.ccsds.org></font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td valign=top><font size=1 face="sans-serif">RE: [Sis-csi] IPv6?</font></table>
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<td>
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<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>
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<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>
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