Re: [trill] AD review of draft-ietf-trill-over-ip-14

Alia Atlas <akatlas@gmail.com> Wed, 21 February 2018 01:39 UTC

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From: Alia Atlas <akatlas@gmail.com>
Date: Tue, 20 Feb 2018 20:39:17 -0500
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To: Donald Eastlake <d3e3e3@gmail.com>
Cc: trill IETF mailing list <trill@ietf.org>, draft-ietf-trill-over-ip@ietf.org
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Subject: Re: [trill] AD review of draft-ietf-trill-over-ip-14
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Hi Donald,

On Tue, Feb 20, 2018 at 8:30 PM, Donald Eastlake <d3e3e3@gmail.com> wrote:

> Hi Alia,
>
> On Tue, Feb 20, 2018 at 6:55 PM, Alia Atlas <akatlas@gmail.com> wrote:
>
>> As is traditional, I have done my AD review of
>> draft-ietf-trill-over-ip-14. First I would like to thank the authors -
>> Donald, Margaret, Mingui, and Dacheng, as well as the reviewers for their
>> work on this document.
>>
>> I did find one minor issue (below) and would recommend a spell-checker to
>> catch several minor typos.  I will send this to IETF Last Call and place it
>> on the IESG telechat on March 8.
>>
>> Minor:
>>
>> 1) In Sec 5.2: " An adjacency can be formed between two TRILL over IP
>> transport ports if the intersection of the sets of encapsulation methods
>> they support is not null. If that intersection is null, then no adjacency
>> is formed."
>> Given that Sec 5.0 says that the native encapsulation MUST be supported,
>> how can the set be null?  Is this the set of encapsulation methods other
>> than the native encapsulation?  Please clarify.
>>
>
> Unless the port is configured to use some other encapsulation X for all
> types of traffic, then a port has to "support" UDP for the low bandwidth of
> Hellos and other adjacency establishment PDUs. This is different from
> advertising support for UDP which means a willingness to use it for data
> traffic and LSPs. This needs to be clarified. Maybe "limited support"
> versus "full support".
>

Thanks, that would work.  The draft currently doesn't indicate limited
support and the previous paragraph indicates that signaling nothing assumes
"native encapsulation".

Regards,
Alia

Thanks,
> Donald
> ===============================
>  Donald E. Eastlake 3rd   +1-508-333-2270 <(508)%20333-2270> (cell)
>  155 Beaver Street, Milford, MA 01757 USA
> <https://maps.google.com/?q=155+Beaver+Street,+Milford,+MA+01757+USA&entry=gmail&source=g>
>  d3e3e3@gmail.com
>
>
>> Regards,
>> Alia
>>
>
>