Re: [ippm] Zaheduzzaman Sarker's No Objection on draft-ietf-ippm-pam-08: (with COMMENT)

[Zaheduzzaman Sarker <[e-mail]>]

That's smart and less confusing, I can say as then one will only interpret
the context to which the SLO are defined.

//Zahed


On Fri, Dec 1, 2023, 19:08 Greg Mirsky <[e-mail]> wrote:

> Hi Zahed,
> thank you for the clarification; that helps a lot.
> I agree that "end-to-end service" makes it ambiguous and might be
> interpreted as an invitation to an ocean boiling party. If we apply
> s/end-to-end service levels/service levels/, would it make the text clearer
> for a reader?  Note that "end-to-end latency" will remain in the text. WDYT?
>
> Regards,
> Greg
>
> On Fri, Dec 1, 2023 at 3:56 AM Zaheduzzaman Sarker <
> [e-mail]> wrote:
>
>> and yes, when I understand what does "end-to-end" mean here then I can
>> suggest text :-).
>>
>> //Zahed
>>
>> On Fri, Dec 1, 2023 at 12:03 PM Zaheduzzaman Sarker <
>> [e-mail]> wrote:
>>
>>> Hi Greg,
>>>
>>> I am still stack on the concept of "end-to-end" here.
>>>
>>> What is the scope of this "end-to-end"? if this is used for a service
>>> which is deployed in the Internet then we might have multiple networks
>>> carrying the flow, to whom the SLO and PAM works then? Very often in Mobile
>>> network the end-to-end means, Mobile edge network - gateway router (UPF) to
>>> the UE, again in ISPs/transit network we can think about end-to-end between
>>> ingress and egress node. In all the cases a flow can be tracked. Hence,
>>> here we need to put some context to the definition of the "end-to-end". I
>>> might be misunderstanding the whole intention here, in that case please
>>> correct me.
>>>
>>> //Zahed
>>>
>>>
>>> On Thu, Nov 30, 2023 at 8:03 PM Greg Mirsky <[e-mail]>
>>> wrote:
>>>
>>>> Hi Zahed,
>>>> thank you for your question. Your question is close to the question
>>>> Roman raised in his review
>>>> <https://mailarchive.ietf.org/arch/msg/ippm/aIYEZqKUUyFNjooQGM8TQE1cwTk/>.
>>>> To address Roman's comment the sentence edited in the working version as
>>>> follows:
>>>> NEW TEXT:
>>>>    This specification introduces a new set of metrics, Precision
>>>>    Availability Metrics (PAM), aimed at capturing end-to-end service
>>>>    levels for a flow, specifically the degree to which the flow complies
>>>>    with the SLOs that are in effect.
>>>> Our intention is to stress that PAM is used to monitor a flow and
>>>> reflects its conformance to the SLOs. A service, in this model, may include
>>>> one or more flows, and hence, each flow might be characterized using PAM
>>>> according to the set of SLOs. Would you suggest any text update to further
>>>> clarify that relationship? I will upload the new version with updates
>>>> addressing all comments received in the course of IESG discussions.
>>>>
>>>> Regards,
>>>> Greg
>>>>
>>>> On Thu, Nov 30, 2023 at 2:45 AM Zaheduzzaman Sarker via Datatracker <
>>>> [e-mail]> wrote:
>>>>
>>>>> Zaheduzzaman Sarker has entered the following ballot position for
>>>>> draft-ietf-ippm-pam-08: No Objection
>>>>>
>>>>> When responding, please keep the subject line intact and reply to all
>>>>> email addresses included in the To and CC lines. (Feel free to cut this
>>>>> introductory paragraph, however.)
>>>>>
>>>>>
>>>>> Please refer to
>>>>> https://www.ietf.org/about/groups/iesg/statements/handling-ballot-positions/
>>>>> for more information about how to handle DISCUSS and COMMENT positions.
>>>>>
>>>>>
>>>>> The document, along with other ballot positions, can be found here:
>>>>> https://datatracker.ietf.org/doc/draft-ietf-ippm-pam/
>>>>>
>>>>>
>>>>>
>>>>> ----------------------------------------------------------------------
>>>>> COMMENT:
>>>>> ----------------------------------------------------------------------
>>>>>
>>>>> Thanks for working on this specification.
>>>>>
>>>>> Even though I get the SLO idea, but this specification says
>>>>>
>>>>>    Precision Availability Metrics (PAM), aimed at capturing end-to-end
>>>>> service
>>>>>    levels for a flow, specifically the degree to which flows comply
>>>>> with the
>>>>>    SLOs that are in effect.
>>>>>
>>>>> and I am not sure I get how PAM executes on the end-to-end service
>>>>> levels or
>>>>> what does the "end-to-end" mean in this context. I think it would good
>>>>> to
>>>>> clarify that aspect in this document.
>>>>>
>>>>>
>>>>>
>>>>>