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Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?

tom petch <ietfc@btconnect.com> Mon, 28 June 2021 08:41 UTC

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From: tom petch <ietfc@btconnect.com>
To: Bob Briscoe <ietf@bobbriscoe.net>, James Bensley <jwbensley+pals@gmail.com>, intarea IETF list <int-area@ietf.org>, "pals@ietf.org" <pals@ietf.org>
Thread-Topic: [Int-area] [Pals] L2TP sequencing: Commonly disabled for IP data? Or always?
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Date: Mon, 28 Jun 2021 08:41:20 +0000
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Subject: Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?
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<at the bottom tp>

From: Int-area <int-area-bounces@ietf.org> on behalf of Bob Briscoe <ietf@bobbriscoe.net>
Sent: 27 June 2021 22:22

James,

[First apologies to everyone for asking the question then not following
up on the answers until now - I went off line for a while.]
See inline tagged [BB]...

On 10/06/2021 13:09, James Bensley wrote:
> On Wed, 9 Jun 2021 at 15:57, Derek Fawcus
> <dfawcus+lists-int-area@employees.org> wrote:
>> On Wed, Jun 09, 2021 at 03:07:41PM +0200, James Bensley wrote:
>>> On Wed, 9 Jun 2021 at 14:05, Giles Heron <giles@layerfree.net> wrote:
>>>> Re BT specifically (and again my info is outdated and may be mis-remembered) the 20C network used L2TP, and I think it’s an option on 21C for handoff to smaller ISPs.  Should all be in the SINs somewhere?
>>> I work in the UK ISP sector. I can confirm that L2TP is in wide spread
>>> use for wholesale services by all major ISPs (except Liberty). I think
>>> the real question here (unless I've misunderstood) is not "is L2TP
>>> being used" but "is L2TP being used AND sequencing is being used
>>> and/or enforced?" - is that understanding correct?
>> Yes.
> In that case  - sequencing isn't used for BT Wholesale services.

[BB] Thank you. It sounds like you have some reason for your certainty
here. Can you elaborate on what makes you so certain sequencing isn't used?

<tp>

Perhaps  a coincidence or perhaps not, but an I-D has just been posted 
Author          : Yogesh Nautiyal
Filename        : draft-nautiyal-l2tpext-tunnel-ka-control-channel-00.txt
which uses L2TP sequencing,  I note the author has an affiliation of Juniper.

The draft would need a fair bit of work.

Tom Petch

Bob

> Cheers,
> James.
>
> _______________________________________________
> Int-area mailing list
> Int-area@ietf.org
> https://www.ietf.org/mailman/listinfo/int-area

--
________________________________________________________________
Bob Briscoe                               http://bobbriscoe.net/

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