Re: [Pce] Mail regarding draft-ietf-pce-pcep

[Dhruv Dhody <[e-mail]>]

Hi Pavan,

In my personal opinion, the vendor TLV makes sense when the TLV is
associated with an existing PCEP Object (and it allows optional TLV) and
the vendor Object for something new! I would mostly consider anything sent
in Open message to be related to existing OPEN object :)

Just to be clear, do you want this for OPEN message only or ALL PCEP
messages (that would additionally include notification and close message as
well)? If we go this route, we may need to change the name of the draft as
it is no longer just stateful!

Thanks!
Dhruv (no hats)






On Wed, Aug 2, 2023 at 10:19 AM Vishnu Pavan Beeram <[e-mail]>
wrote:

> Please see inline..
>
> On Wed, Aug 2, 2023 at 7:19 PM Dhruv Dhody <[e-mail]> wrote:
>
>> Hi Pavan,
>>
>> On Wed, Aug 2, 2023 at 8:39 AM Vishnu Pavan Beeram <[e-mail]>
>> wrote:
>>
>>> Marcel, Hi!
>>> Thanks for bringing this to the list! I interpret the text in RFC5440
>>> regarding "one OPEN object" to just mean that the Open Message cannot carry
>>> more than one "OPEN" object.
>>>
>>> Dhruv, Hi!
>>> I would propose updating draft-ietf-pce-stateful-pce-vendor to
>>> explicitly allow the use of the "VENDOR-INFORMATION" object in the Open
>>> message. For example, implementations may choose to carry "versioning"
>>> information in this object during the Open message exchange (this
>>> information may or may not have any impact on the establishment of the PCEP
>>> session). As you mentioned, carrying the "VENDOR-INFORMATION" TLV in the
>>> Open Object is already allowed. I don't see any good reason to preclude the
>>> use of the "VENDOR-INFORMATION" object in the Open message.
>>>
>>>
>> Hmm, with that reasoning do we need to do that for all PCEP messages?
>>
> [VPB] It is hard to envision what proprietary use-case someone may come up
> with. But allowing the VENDOR-INFORMATION usage in Open message along with
> PCReq, PCReply, PCRpt, PCUpd and PCInitiate messages seems reasonable to me.
>
> Also, is there anything that cannot be achieved via the TLV, and you would
>> need the Object in the Open message case? Just wondering...
>>
> [VPB] You can achieve everything by using just the Object or just the TLV
> (this is true for other messages as well). I'm advocating a consistent
> semantic -- allow for the use of both VENDOR-INFORMATION object and TLV in
> all the aforementioned messages.
>
>
>>
>> Thanks!
>> Dhruv
>>
>>
>>
>>
>>> Regards,
>>> -Pavan
>>>
>>> On Wed, Aug 2, 2023 at 6:51 PM Dhruv Dhody <[e-mail]> wrote:
>>>
>>>> Hi Marcel,
>>>>
>>>> Welcome, please consider joining the PCE mailing list so that we
>>>> don't have to manually approve your email to the list -
>>>> https://www.ietf.org/mailman/listinfo/pce
>>>>
>>>> See inline...
>>>>
>>>> On Wed, Aug 2, 2023 at 8:11 AM Marcel Reuter (External) <
>>>> [e-mail]> wrote:
>>>>
>>>>> Aloha,
>>>>>
>>>>> dear colleagues!
>>>>>
>>>>> This is my very first E-mail ever to IETF.
>>>>> So please forgive me, if I dont follow all rules.
>>>>>
>>>>> I have a question about the RFC5440
>>>>> Section 6-2
>>>>>
>>>>>
>>>>> https://www.rfc-editor.org/rfc/rfc5440.html#section-6.2
>>>>>
>>>>> The RFC says:
>>>>>
>>>>> 6.2.  Open Message
>>>>>
>>>>> ...
>>>>>    The format of an Open message is as follows:
>>>>>
>>>>>    <Open Message>::= <Common Header>
>>>>>                      <OPEN>
>>>>>  The Open message MUST contain exactly one OPEN object (see
>>>>>    Section 7.3).
>>>>>
>>>>>
>>>>> Unfortunately, Im not very firm in BNF syntax
>>>>> My question here is to  understand the last sentence.
>>>>>
>>>>> Is it allowed, just from a pure protocol standpoint,
>>>>> to send in the open message
>>>>> 1 (one) open object
>>>>> AND also
>>>>> 1(one)  VENDOR-INFORMATION object with the P-flag not set?
>>>>>
>>>>>
>>>>> We are an operator and using PCE from one vendor and router from
>>>>> different other vendors and have currently some interesting discussing
>>>>> about that topic
>>>>>
>>>>>
>>>> RFC 7470 (https://datatracker.ietf.org/doc/rfc7470/) added a
>>>> VENDOR-INFORMATION Object for PCReq and PCRep messages!
>>>> https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-pce-vendor/
>>>> addes the same for PCRpt and PCUpd messages!
>>>>
>>>> We have not specified the use of the Object within the Open message!
>>>> If there is a need to carry vendor specific information, then using the
>>>> VENDOR-INFORMATION-TLV within the Open object is allowed.
>>>>
>>>> In case they have a need for the object within the Open message, please
>>>> provide a usecase and perhaps it can be added in the draft!
>>>>
>>>> Hope this helps!
>>>>
>>>> Thanks!
>>>> Dhruv
>>>>
>>>>
>>>>
>>>>>
>>>>> Thanks a lot
>>>>> Marcel
>>>>>
>>>>> :-)
>>>>>
>>>>>
>>>>> VG
>>>>> Marcel Reuter
>>>>>
>>>>> --
>>>>> Marcel Reuter
>>>>> Im Auftrag der Telefónica Germany GmbH & Co. OHG
>>>>> Überseering 33a
>>>>> 22297 Hamburg
>>>>>
>>>>> [e-mail]
>>>>>
>>>>> ________________________________
>>>>>
>>>>> Este mensaje y sus adjuntos se dirigen exclusivamente a su
>>>>> destinatario, puede contener información privilegiada o confidencial y es
>>>>> para uso exclusivo de la persona o entidad de destino. Si no es usted. el
>>>>> destinatario indicado, queda notificado de que la lectura, utilización,
>>>>> divulgación y/o copia sin autorización puede estar prohibida en virtud de
>>>>> la legislación vigente. Si ha recibido este mensaje por error, le rogamos
>>>>> que nos lo comunique inmediatamente por esta misma vía y proceda a su
>>>>> destrucción.
>>>>>
>>>>> The information contained in this transmission is confidential and
>>>>> privileged information intended only for the use of the individual or
>>>>> entity named above. If the reader of this message is not the intended
>>>>> recipient, you are hereby notified that any dissemination, distribution or
>>>>> copying of this communication is strictly prohibited. If you have received
>>>>> this transmission in error, do not read it. Please immediately reply to the
>>>>> sender that you have received this communication in error and then delete
>>>>> it.
>>>>>
>>>>> Esta mensagem e seus anexos se dirigem exclusivamente ao seu
>>>>> destinatário, pode conter informação privilegiada ou confidencial e é para
>>>>> uso exclusivo da pessoa ou entidade de destino. Se não é vossa senhoria o
>>>>> destinatário indicado, fica notificado de que a leitura, utilização,
>>>>> divulgação e/ou cópia sem autorização pode estar proibida em virtude da
>>>>> legislação vigente. Se recebeu esta mensagem por erro, rogamos-lhe que nos
>>>>> o comunique imediatamente por esta mesma via e proceda a sua destruição
>>>>>
>>>>> _______________________________________________
>>>>> Pce mailing list
>>>>> [e-mail]
>>>>> https://www.ietf.org/mailman/listinfo/pce
>>>>>
>>>> _______________________________________________
>>>> Pce mailing list
>>>> [e-mail]
>>>> https://www.ietf.org/mailman/listinfo/pce
>>>>
>>> _______________________________________________
>>> Pce mailing list
>>> [e-mail]
>>> https://www.ietf.org/mailman/listinfo/pce
>>>
>>