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

Donald Eastlake <> Fri, 11 July 2014 20:02 UTC

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From: Donald Eastlake <>
Date: Fri, 11 Jul 2014 16:02:34 -0400
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Subject: Re: [trill] I-D Action: draft-ietf-trill-over-ip-01.txt
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On Tue, Jul 8, 2014 at 6:28 PM, Joe Touch <> 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.

 Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
 155 Beaver Street, Milford, MA 01757 USA