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

Stewart Bryant <stewart.bryant@gmail.com> Wed, 09 June 2021 11:48 UTC

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From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Wed, 9 Jun 2021 12:48:22 +0100
Cc: Stewart Bryant <stewart.bryant@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>, mark@townsley.net, "Carlos Pignataro (cpignata)" <cpignata@cisco.com>, Ignacio Goyret <ignacio.goyret@nokia.com>, intarea IETF list <int-area@ietf.org>, pals@ietf.org
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To: Derek Fawcus <dfawcus+lists-int-area@employees.org>
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Subject: Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?
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> On 9 Jun 2021, at 12:19, Derek Fawcus <dfawcus+lists-int-area@employees.org> wrote:
> 
> On Wed, Jun 09, 2021 at 11:23:00AM +0100, Stewart Bryant wrote:
>> 
>> I doubt that there is much L2TP still out there. It was in its prime with dialup modems.
> 
> Stewart,
> 
> Isn't the BT wholesale ADSL product still using it?
> 
> Someone recently pointed to their SIN 472, which reference RFC 2661 not 3931.
> I don't know what other countries are doing for ADSL service,
> and in how many ADSL is a live vs legacy product.
> 
> Certainly my ISP describes how one can connect to them using L2TP mainly because
> they have the backend available for supporting the various 'broadband' access
> facilities.  They also offer ADSL access via another provider, so maybe they're
> also using L2TP?
> 
> So maybe the UK deployment doesn't count a 'much’.
> 
> DF

I suppose the ADSL product may be using it. I thought that it was all MPLS-PW.

We need someone from Openreach to tell us what they are doing.

In any case hopefully the last of the xDSL will soon be confined to the scrap bin it should have been in years ago as part of the plan to replace copper with FTTP/5G/LEO.

- Stewart