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Re: [16NG] Node Req: Issue 6: Support for RFC 5121: IP version 6 over WiMAX

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 17 November 2008 22:46 UTC

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Date: Tue, 18 Nov 2008 09:20:16 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Daniel Park <soohongp@gmail.com>
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Cc: john.loughney@nokia.com, ipv6@ietf.org, "16ng@ietf.org" <16ng@ietf.org>
Subject: Re: [16NG] Node Req: Issue 6: Support for RFC 5121: IP version 6 over WiMAX
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On 2008-11-18 09:03, Daniel Park wrote:
> Brian (ccing 16ng list)
> 
> On Mon, Nov 17, 2008 at 12:12 PM, Brian E Carpenter <
> brian.e.carpenter@gmail.com> wrote:
> 
>> Daniel,
>>
>> On 2008-11-14 22:19, Daniel Park wrote:
>>> John,
>>>
>>> I would make a minor change according to the valuable comments from the
>>> WiMAX expert:
>>>
>>> There are two ways to transfer IPv6 over WiMAX:
>>> - IPv6 over WiMAX using IPCS: RFC5121
>>> - IPv6 over Ethernet carried over WiMAX: AD Evaluation (ID Status)
>> Where does your suggested preference for the IPv6 CS come from?
>> Does 16ng have a consensus on this preference?
>>
>> Since I can't imagine anyone *not* implementing the Ethernet CS,
>> doesn't this make extra work for all implementors, compared
>> with preferring the Ethernet CS for both IP versions?
> 
> 
> We had long discussion on that before..:-) Yes, IPv6CS (RFC5121) comes from
> 16ng WG. And EthernetCS is too. Prebably, the consensus you mentioned above
> means which CS is a mandatory or optional for IPv6 implementation or
> both. Well, 16ng WG just leaves them to the business choice in WiMAX
> networks since that is beyond scope of 16ng. As of today, obviously mobile
> biz wants to implement IPv6CS only, and wired biz (looks like DSL) wants to
> implemt EthernetCS. But, no one knows what happens tomorrow in WiMAX
> networks.

Then it seems to me there is no useful statement to be made
in the node requirements document. If 16ng has no recommendation,
I don't see how 6man can decide.

Thanks

   Brian
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