On Thu, Jun 8, 2023 at 9:36 AM Peter Psenak <ppse...@cisco.com> wrote:
> Zahed, > > please see inline: > > On 08/06/2023 07:00, Zaheduzzaman Sarker via Datatracker wrote: > > Zaheduzzaman Sarker has entered the following ballot position for > > draft-ietf-lsr-ip-flexalgo-13: 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-lsr-ip-flexalgo/ > > > > > > > > ---------------------------------------------------------------------- > > COMMENT: > > ---------------------------------------------------------------------- > > > > Thanks for working on this specification. > > > > I have no comment from TSV point of view. However, the description in > section 3 > > is a not clear to me. It references 5G system and N3 interfaces then > describes > > the need for UPF selection based on some sort of session needs. However, > I > > could not relate how IP addresses plays role in that selection and where > in 5G > > system this is done or planned to be done based of IP addresses? is > there any > > deployment case or already deployed UPF selection based on just IP > addresses? > > yes. The real field example is where the mobile site accepts both data > and voice traffic. Voice traffic is sent from mobile site to the voice > gateway that has its own unique address. That traffic needs low latency > paths. Rest of the data traffic is routed to its destination using best > effort path. > Here, I think you are talking about the QoS framework that 3GPP has , and it also involves radio bearer, radio schedulers and more. The IP address only could be one part of it. It is not the case that if you have certain IP address your traffic would get the extra treatment it wants. The bearer concept is not new to 5G system and applicable to 4G system as well. The current text I think is very shy on explaining the concept and relating it to IP address. > > > > > If this section supposed to be the motivation of this whole > specification then > > it need to be improved in description on how this specification helps in > the > > usecase it describes. Or may be removed from the specification. > > Section 3 is an example of the use case. It's one of the motivations > behind the spec. > > I don't mind removing it, but I feel it has some value. Not sure how to > improve it, if you can suggest the better wording, I can certainly use it. > I can help with text if I can understand use case better. Right now that is not the case. //Zahed
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