Re: [Softwires] draft-ietf-softwire-lw4over6 excluding Well Known Ports

Tom Taylor <tom.taylor.stds@gmail.com> Mon, 02 June 2014 17:51 UTC

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Date: Mon, 02 Jun 2014 13:50:58 -0400
From: Tom Taylor <tom.taylor.stds@gmail.com>
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To: Wojciech Dec <wdec.ietf@gmail.com>, Ian Farrer <ianfarrer@gmx.com>
References: <53422B8F.2020109@ericsson.com> <37A243DD-5249-4070-AB19-6DFFCFE17AA7@gmx.com> <DC98AF70-DBF1-48AD-8699-2FC4E645FF40@cisco.com> <C3B32B71-79EE-408F-A92C-D40021DC9A5A@gmx.com> <92E51E75-2914-421F-B222-7478EC3D6A02@cisco.com> <BBFBDEAA-0D2B-4A74-86E4-88824712EA26@gmx.com> <CAFFjW4igsiqS5yNUECerMzpZSkmPaL28sqef1usZdxt87y1jEw@mail.gmail.com>
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Cc: draft-ietf-softwire-lw4over6@tools.ietf.org, Ole Troan <ot@cisco.com>, Yong Cui <cuiyong@tsinghua.edu.cn>, Softwires WG <softwires@ietf.org>
Subject: Re: [Softwires] draft-ietf-softwire-lw4over6 excluding Well Known Ports
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Not sure how you read that, but it can be fixed by putting a comma after 
"SHOULD be 0" and replacing "to allocate" with "thus allocating".

Tom

On 02/06/2014 12:14 PM, Wojciech Dec wrote:
> Uhm, this appears to mean that the RECOMMENDED a-bits SHOULD be 6.
>
>
> On 26 May 2014 13:24, Ian Farrer <ianfarrer@gmx.com> wrote:
>
>> Hi,
>>
>> This one slipped my mind….
>>
>>  From a discussion with Ole during the MAP dhcp last call, there was a
>> discussion about the exclusion of provisioning WKPs to CPEs -
>> http://www.ietf.org/mail-archive/web/softwires/current/msg06010.html
>>
>> In previous versions, the lw4o6 used to reference sun-dhc-port-set-option,
>> which also stated that the WKPs should not be assigned. This advice got
>> lost when changing to reference map-dhcp for PSID format.
>>
>> Here’s a wording change proposal to resolve this:
>>
>> Section 5.1
>>
>> Original text (last sentence, para 7):
>>
>> "For lw4o6, the  number of a-bits SHOULD be 0."
>>
>> Proposed change:
>>
>> "For lw4o6, the number of a-bits SHOULD be 0 to allocate a single
>> contiguous port set to each lwB4.
>>
>> Unless a lwB4 is being allocated a full IPv4 address, it is RECOMMENDED
>> that PSIDs containing the well-known ports (0-1023) are not allocated to
>> lwB4s.”
>>
>> Please let me know if you are OK with the proposed change.
>>
>> cheers,
>> Ian
>>
>>>
>>>> Good spot on the WKP exclusion. Before the lw4o6 draft was updated to
>> reference map-dhcp for configuration,  the port configuration was described
>> in sun-dhc-port-set-option, which also stated that the WKPs should not be
>> assigned. This advice got lost when changing to reference map-dhcp. I’ll
>> make a suggested text update for the lw4o6 draft to fix this. Does that
>> work for you?
>>>
>>> yes, that would be good.
>>>
>>> cheers,
>>> Ole
>>>
>>
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>
>
>
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