Re: [trill] I-D Action: draft-ietf-trill-over-ip-01.txt

Hi, Donald,

I raised these concerns at the time the doc was proposed as a WG item, 
and these issues were never really addressed. WG adoption does not 
ensure a document gets published - there's always IETF LC, in addition 
to other steps - this being one of them.

I see your points about keying, zero-config, etc., but those argue for a 
new layer to support TRILL use of existing encapsulation, not for a 
totally new encapsulation.

Although I appreciate the IESG's "let a thousand flowers bloom" 
viewpoint, the result is a thousand wheels get reinvented, and it's 
nearly impossible to ensure that past mistakes are not repeated.

Joe

On 7/11/2014 1:02 PM, Donald Eastlake wrote:
> On Tue, Jul 8, 2014 at 6:28 PM, Joe Touch <touch@isi.edu> wrote:
>> Hi, all,
>
> Hi Joe,
>
> First off, I'd like to thank you for your contributions to this draft.
> In particular, section 10.1 on Recursive Ingress was included in
> response to comments that, as I recall, came primarily from you.
>
>> I don't see TRILL as needing a specific solution, given ethernet can already
>> be bridged using IP any number of ways (including GRE or L2VPN approaches).
>
> Well, I suppose you would get different answers from different people
> as to whether or not having convenient default security keying
> leveraging IS-IS keying, zero configuration under some circumstances,
> saving 14 or 18 or so bytes on every packet, having protection against
> recursive ingress, etc., are worth it. But in the context of TRILL,
> this has already been decided. TRILL over IP is specifically part of
> the work in the TRILL Charter, that Charter was approved by the TRILL
> WG and the IESG, it has been determined that there is a TRILL WG
> consensus to use UDP encapsulation, and, in my opinion, most of the
> work, although not all of it, has already been done as per this draft.
>
> Thanks,
> Donald
> =============================
>   Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>   155 Beaver Street, Milford, MA 01757 USA
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