Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99

Loa Andersson <loa@pi.nu> Sun, 16 July 2017 08:49 UTC

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From: Loa Andersson <loa@pi.nu>
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Date: Sun, 16 Jul 2017 10:49:34 +0200
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Subject: Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99
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+1

Jouni, thanks for all the hard work!

/Loa

PS

Can someone help me with github, 20 min hands on maybe. I rad the
instructions but don't really get it :(, some of the language is
not mine.

On 2017-07-15 23:22, János Farkas wrote:
> Hi,
>
> Jouni, thank you very much for preparing the slides!
> I agree it is good.
>
> just a minor comments.
>
> title page could reflect that this is in fact draft-dt-detnet-dp-sol-01.
> I know that the draft is there at the bottom of many pages, but perhaps
> it'd be better to call out to the title page.
> (and data plane solutions design team, not data plane alternatives ;-) )
>
> Thanks,
> Janos
>
>
>
>
>
>
>
> On 7/14/2017 4:29 PM, Lou Berger wrote:
>> Looks.  Just add page numbers...
>>
>> Thanks,
>>
>> Lou
>>
>>
>> On 7/14/2017 7:22 AM, Korhonen, Jouni wrote:
>>> Another update.
>>>
>>> - Jouni
>>>
>>>
>>>> -----Original Message-----
>>>> From: Lou Berger [mailto:lberger@labn.net]
>>>> Sent: Friday, July 14, 2017 13:22 PM
>>>> To: Jiangyuanlong <jiangyuanlong@huawei.com>om>; Jouni
>>>> <jouni.nospam@gmail.com>om>; cjbc@it.uc3m.es; Korhonen, Jouni
>>>> <Jouni.Korhonen@nordicsemi.no>no>; 'Balázs Varga A'
>>>> <balazs.a.varga@ericsson.com>om>; detnet-dp-dt@ietf.org
>>>> Subject: Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99
>>>>
>>>> T-label imo.
>>>>
>>>> Lou
>>>>
>>>>
>>>> On July 14, 2017 4:26:06 AM Jiangyuanlong <jiangyuanlong@huawei.com>
>>>> wrote:
>>>>
>>>>> Sorry, I was confused by L-label in the last version and S-Label. But
>>>>> we still need to harmonize the T-Lable with the S-Label.
>>>>> For example, if we set up a low-latency or contention-free LSP for a
>>>>> detnet flow (between DA-T-PEs or DA-S-PEs), most probably we need some
>>>>> traffic engineered LSPs (i.e., L-LSP as defined in RFC 3270).
>>>>> Can we regard L-LSP labels on the path to be a T-Label or an S-Label?
>>>>>
>>>>> Best regards,
>>>>> Yuanlong
>>>>>
>>>>> -----Original Message-----
>>>>> From: Detnet-dp-dt [mailto:detnet-dp-dt-bounces@ietf.org] On Behalf Of
>>>>> Jiangyuanlong
>>>>> Sent: Friday, July 14, 2017 3:56 PM
>>>>> To: Jouni; cjbc@it.uc3m.es; 'Korhonen, Jouni'; 'Balázs Varga A';
>>>>> detnet-dp-dt@ietf.org
>>>>> Subject: Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99
>>>>>
>>>>> Hi folks,
>>>>>
>>>>> I am not sure we need to introduce S-Label in the first place.
>>>>> As I remember, we had some consensus that PW label has carried enough
>>>>> information in the f2f discussion happened during the last IETF
>>>>> meeting.
>>>>> And S-label is regarded redundant for PW. Did I miss something?
>>>>>
>>>>> Thanks,
>>>>> Yuanlong
>>>>>
>>>>> -----Original Message-----
>>>>> From: Detnet-dp-dt [mailto:detnet-dp-dt-bounces@ietf.org] On Behalf Of
>>>>> Jouni
>>>>> Sent: Friday, July 14, 2017 1:17 PM
>>>>> To: cjbc@it.uc3m.es; 'Korhonen, Jouni'; 'Balázs Varga A';
>>>>> detnet-dp-dt@ietf.org
>>>>> Subject: Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99
>>>>>
>>>>> Thanks.
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Detnet-dp-dt [mailto:detnet-dp-dt-bounces@ietf.org] On Behalf
>>>>>> Of Carlos Jesús Bernardos Cano
>>>>>> Sent: Thursday, July 13, 2017 20:39 PM
>>>>>> To: Korhonen, Jouni <Jouni.Korhonen@nordicsemi.no>no>; Balázs Varga A
>>>>>> <balazs.a.varga@ericsson.com>om>; detnet-dp-dt@ietf.org
>>>>>> Subject: Re: [Detnet-dp-dt] DP DT solution draft slides for IETF99
>>>>>>
>>>>>> Hi Jouni,
>>>>>>
>>>>>> Thanks for preparing this. Some small comments below:
>>>>>>
>>>>>> - Slide 6: I'd remove "native" in "PW-based native DetNet" to be
>>>>>> consistent with the terms used in the draft (alternatively, I'd use
>>>>>> "IPv6- based native DetNet" in slide 7for consistency with "PW-based
>>>>>> native DetNet in slide 6).
>>>>> Oops. Good catch.
>>>>>
>>>>>> - Slides 11 and 12: use the same order for "Flow-ID" and "SeqNum" on
>>>>>> the slides (right hand side)
>>>>> Ok.
>>>>>
>>>>>
>>>>>> - Slide 11: though I have no concrete proposal, I think the S-label
>>>>>> could be better introduced (maybe with a figure, also introducing the
>>>>>> (DA-)T-PE and (DA-)S-PE node terminology).
>>>>> Ok. I'll come up with something.
>>>>>
>>>>>
>>>>>> - Slide 14: "already be seen" --> "already been seen"
>>>>> Ok.
>>>>>
>>>>> - Jouni
>>>>>
>>>>>
>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Carlos
>>>>>>
>>>>>> On Thu, 2017-07-13 at 13:57 +0000, Korhonen, Jouni wrote:
>>>>>>> An update.. I am still doing the QoS etc part of the deck.
>>>>>>>
>>>>>>>
>>>>>>> - Jouni
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: Balázs Varga A [mailto:balazs.a.varga@ericsson.com]
>>>>>>>> Sent: Thursday, July 13, 2017 12:54 PM
>>>>>>>> To: Korhonen, Jouni <Jouni.Korhonen@nordicsemi.no>no>;
>>>>>>>> detnet-dp-dt@ie tf.org
>>>>>>>> Subject: RE: DP DT solution draft slides for IETF99
>>>>>>>>
>>>>>>>> Hi Jouni,
>>>>>>>>
>>>>>>>> Thanks for preparing this. Just some fast reactions:
>>>>>>>> - slide5-6-7: we may receive a comment that it looks like only
>>>>>>>> end- hosts having same type (TSN, MPLS, IPv6) can be
>>>> interconnected.
>>>>>>>> I would propose to add a note, that other combinations as
>>>>>>>> depicted requires further considerations.
>>>>>>>>
>>>>>>>> - slide8: we have used the MS-PW analogy during our discussions.
>>>>>>>> However
>>>>>>>> it is valid only if PREF is used.
>>>>>>>> I would propose to refer on the first bullet only to "PseudoWires"
>>>>>>>> and
>>>>>>>> "IPv6" as the two data plane solution.
>>>>>>>> A further note could highlight the MS-PW analogy for PREF
>>>> scenarios.
>>>>>>>> - slide10-11: I would pair the DetNet flow specific information
>>>>>>>> fields to be transported with the data plane encapsulation fields.
>>>>>>>>     DetNet flow    Encapsulation fields
>>>>>>>>     Flow ID:    PW label
>>>>>>>>     Seq. number:     CW
>>>>>>>>
>>>>>>>> - slide14: regarding multicast DetNet flows I would formulate
>>>>>>>> somewhat different. In my view we have considered p2p data plane
>>>>>>>> solutions.
>>>>>>>> The defined data plane works for DetNet flows having multicast
>>>>>>>> dst- address assuming that the DetNet domain provides p2p
>>>> connectivity.
>>>>>>>> We may also receive comments that many DetNet flows are multicast
>>>>>>>> (e.g., TSN flows using IEEE-FRER, etc.)
>>>>>>>>
>>>>>>>> Cheers
>>>>>>>> Bala'zs
>>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: Detnet-dp-dt [mailto:detnet-dp-dt-bounces@ietf.org] On
>>>>>>>> Behalf Of Korhonen, Jouni
>>>>>>>> Sent: 2017. július 12. 23:29
>>>>>>>> To: detnet-dp-dt@ietf.org
>>>>>>>> Subject: [Detnet-dp-dt] DP DT solution draft slides for IETF99
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> Sorry about this taking so long. Please, have a look and flame on..
>>>>>>>> There's still time to work on the actual content. However, keep
>>>>>>>> in mind that this is mainly an update from last time.
>>>>>>>>
>>>>>>>> - Jouni
>>>>>>> _______________________________________________
>>>>>>> Detnet-dp-dt mailing list
>>>>>>> Detnet-dp-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/detnet-dp-dt
>>>>>> _______________________________________________
>>>>>> Detnet-dp-dt mailing list
>>>>>> Detnet-dp-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet-dp-dt
>>>>> _______________________________________________
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-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64