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Re: [Int-area] draft-shirasaki-isp-shared-addr and Class E networks

Brian Haberman <brian@innovationslab.net> Tue, 25 November 2008 01:22 UTC

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Date: Mon, 24 Nov 2008 20:22:19 -0500
From: Brian Haberman <brian@innovationslab.net>
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To: Dave Thaler <dthaler@windows.microsoft.com>
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Cc: "int-area@ietf.org" <int-area@ietf.org>
Subject: Re: [Int-area] draft-shirasaki-isp-shared-addr and Class E networks
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Dave,
      Wasn't the comment made at the mike focused on having the class E 
address space be used between the two layers of NAT?

Regards,
Brian

Dave Thaler wrote:
> It's been pointed out several times in the past regarding class E
> space that you cannot expect a host/app to work if you try to give
> it a class E address.
> 
> So class E addresses can only be safely used in networks for which
> you have complete control/confidence over all the devices/apps
> in that network.
> 
> It might be usable between routers in an ISP.
> It is not really usable to assign a general-purpose PC acting as a CPE.
> 
> -Dave
> 
>> -----Original Message-----
>> From: int-area-bounces@ietf.org [mailto:int-area-bounces@ietf.org] On
>> Behalf Of Roque Gagliano
>> Sent: Friday, November 21, 2008 1:02 PM
>> To: int-area@ietf.org
>> Subject: [Int-area] draft-shirasaki-isp-shared-addr and Class E
>> networks
>>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> After the presentation on the intarea session yesterday I though about
>> something that was said ( I do not remember the person that did the
>> comment) in the last NANOG meeting during the panel: " What Would Jon
>> have Done About the Addressing Challenges Currently Facing Us?".
>>
>> The comment was about what Jon Postel did with the cable companies and
>> the 24/8 network. He allocated the address block but forced the cable
>> companies to test CIDR. In that sense he gave something and got
>> something.
>>
>> I wonder if we could take that example for the "shared address" case
>> and re-activate the re-definition of the Class E space as "for private
>> use" (draft-wilson-class-e-02) in order to be able to be use for this
>> architectures if the ISP are willing to do so.
>>
>>
>> Roque
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.8 (Darwin)
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>> iEYEARECAAYFAkknIcoACgkQnk+WSgHpbO4kVwCgpHb6F3WO+9UHYQRyyeDhd44G
>> JzgAn34S3xolZmhopok7ZtLgTt4mPZP7
>> =DzEa
>> -----END PGP SIGNATURE-----
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