Hi, Brian,

I would say "good to go" on this draft, with the editorial changes I
have discussed with Carlos.

Thanks,

Spencer

On 9/25/06, Carlos Pignataro <[EMAIL PROTECTED]> wrote:
Hi Spencer,

Thanks again, please see inline.

On 9/25/2006 2:59 PM, Spencer Dawkins allegedly said the following:
> Hi, Carlos,
>
> Thanks for the quick feedback. I think we can finish this up today.
>
> Please see inline.
>
> Spencer
>
>
>> Spencer,
>>
>> Thank you for your review and comments. Please see inline.
>>
>> On 9/22/2006 3:37 PM, Spencer Dawkins allegedly said the following:
>>> I have been selected as the General Area Review Team (Gen-ART) reviewer
>>> for
>>> this draft (for background on Gen-ART, please see
>>> http://www.alvestrand.no/ietf/gen/art/gen-art-FAQ.html).
>>>
>>> Please resolve these comments along with any other Last Call comments you
>>> may receive.
>>>
>>> Document: draft-ietf-mpls-over-l2tpv3-01.txt
>>> Reviewer: Spencer Dawkins
>>> Review Date:  2006-09-22
>>> IETF LC Date: 2006-10-04
>>> IESG Telechat date:
>>> Summary: This draft is almost ready for publication as a Proposed
>>> Standard.
>>>
>>>    The optional L2-Specific-Sublayer defined in [RFC3931] is generally
>>>
>>> Spencer (editorial): I know this term is used in RFC 3931, but wish it
>>> was
>>> something like "-Sublayer header" or "-Sublayer bits", just for
>>> readability.
>> I'd like to use the [RFC3931] term, "L2-Specific Sublayer" (without the
>> second dash). I'll ensure this is used consistently throughout the doc.
>
> This works for me. I wish "Sublayer" sounded more like a header field than
> part of a protocol stack, but the community may already be accustomed to
> this usage.

OK. I see your point; but I believe that the common usage of the term
carries an implicit "header" in its meaning though.

>
>>>    not present for MPLS over L2TPv3.
>>>
>>> 4. Applicability
>>>
>>>    MPLS over L2TPv3 may be favorable compared to [RFC4023], if:
>>>
>>> Spencer: I'm not sure what "may be favorable compared to" is saying. Is
>>> this
>>> "may have advantages compared to"?
>> OK, "may be advantageous compared to" (was using favorable as synonym to
>> advantageous, or having advantages).
>
> This is fine, and helps me to parse the next sentence.

OK.

>
>>>       Two routers are "adjacent" over an L2TPv3 tunnel that exists for
>>>       some reason outside the scope of this document, and those two
>>>       routers need to send MPLS packets over that adjacency.
>>>
>>> Spencer: I'm not sure what this sentence is saying, and can't parse it
>>> well
>>> enough to rephrase - sorry!
>> It's trying to say that one advantage is when there is already a
>> pre-existing L2TPv3 tunnel between two routers that can be used to send
>> MPLS packets over it.
>
> OK, I think I understand now. Suggest "Two routers are already "adjacent"
> over an L2TPv3 tunnel established for some other reason, and wish to
> exchange MPLS packets over that adjacency."

That works, thanks for the suggestion.

>
>>> 5.1 In the Absence of IPsec
>>>
>>>    However, when the tunnel head and the tunnel tail are not in the same
>>>    administrative domain, this may become difficult, and filtering based
>>>    on the destination address can even become impossible if the packets
>>>    must traverse the public Internet.
>>>
>>> Spencer: I'm not sure I understand the point being made here. Why does
>>> traversing the public internet make this impossible, if crossing
>>> administrative domain boundaries makes it difficult?
>> Note that a design consideration for this section is to be inline with
>> RFC4023, so there is a desire to stay consistent in this sentence. See
>> second para in http://ietf-tools.sth.netnod.se/html/rfc4023#section-8.2
>
> I understand the design consideration (and see that the same paragraph
> appears in RFC 4023), I was saying that the text didn't explain why
> destination filtering was difficult/impossible. It may be that I'm the only
> person who doesn't know why - in that case, the text is fine :-)
>

OK, will keep the text as is.

Many thanks for your review !

--Carlos.

> Thanks,
>
> Spencer
>

--
--Carlos Pignataro.
Escalation RTP - cisco Systems

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