Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?
Bob Briscoe <ietf@bobbriscoe.net> Tue, 29 June 2021 10:02 UTC
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To: tom petch <ietfc@btconnect.com>, intarea IETF list <int-area@ietf.org>, "pals@ietf.org" <pals@ietf.org>
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From: Bob Briscoe <ietf@bobbriscoe.net>
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Date: Tue, 29 Jun 2021 11:02:08 +0100
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Subject: Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?
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Tom, see [BB2] On 28/06/2021 09:41, tom petch wrote: > <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 Re BT specifically (and again my info is outdated and may be mis-remembered) the 20C network used L2TP, and I think it’s an option on 21C for handoff to smaller ISPs.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. [BB] Thanks for pointing this out. It's quite normal and expected for L2TP to use its sequencing facility for a control channel. I'm not concerned about that. My original question was scoped to IP as data. But thanks anyway. Cheers Bob > > 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/ > > _______________________________________________ > Int-area mailing list > Int-area@ietf.org > https://www.ietf.org/mailman/listinfo/int-area -- ________________________________________________________________ Bob Briscoe http://bobbriscoe.net/
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Stewart Bryant
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Stewart Bryant
- Re: [Pals] [EXTERNAL] Re: [Int-area] L2TP sequenc… Alexander Vainshtein
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Derek Fawcus
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Joel M. Halpern
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Stewart Bryant
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Stewart Bryant
- Re: [Pals] [EXTERNAL] Re: [Int-area] L2TP sequenc… Derek Fawcus
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… James Bensley
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Joel Halpern Direct
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Derek Fawcus
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… David Allan I
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Mark Townsley
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Andrew G. Malis
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Andrew G. Malis
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… James Bensley
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… James Bensley
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… tom petch
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Derek Fawcus
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Bob Briscoe
- Re: [Pals] [Int-area] L2TP sequencing: Commonly d… Giles Heron