Re: [5gangip] Network tokens draft

On Fri, Jul 10, 2020 at 7:26 AM Tom Herbert <tom@herbertland.com> wrote:

> On Fri, Jul 10, 2020 at 5:10 AM John Grant <j@ninetiles.com> wrote:
> >
> > This adds even more per-packet processing and makes headers even bigger.
> > In ETSI ISG NIN https://www.etsi.org/technologies/non-ip-networking
> > we're working on reducing them, as mobile operators (and no doubt
> > others) want, by getting all this information into the control plane
> > where it belongs.
> >
> John,
>
> Network tokens provide the API between an application on a UE and the
> network for the application to specify exactly the service it wants.

A fundamental principle of mobile qos is that you do not trust the UE, as
it can be compromised to make all traffic high priority. Only the network
can reliably and securely allocate resources based on policy.

> At the first hop in the network, the device can compress the headers,
> use MPLS, put into some non-IP format, whatever it wants as long as
> the user gets the service they've requested and correct protocol
> behavior is maintained. If the operator wants to create a state for
> every single flow in their network that's their prerogative, but good
> luck scaling that to hundreds of billions of flows and getting it to
> work seamlessly across mobile events-- the "connectionless" model of
> IP replaced "circuit-switched" networks for good reason!
>

In mobile, the the bearer is a bit of a virtual circuit.  Each UE has one
or more bearers which are assigned an e2e qos policy.  Your cases for
tokens would be stronger if you could show how tokens overcome a defined
challenge that is not solved today.  It is important for credibility to
demonstrate knowledge of the existing approach ... otherwise the suggestion
appears out of context

> Tom
>
> > --
> > John Grant
> > Nine Tiles, Cambridge, England
> > +44 1223 862599 and +44 1223 511455
> > http://www.ninetiles.com
> >
> >
> > On 09/07/2020 18:00, Tom Herbert wrote:
> > > This is a draft on "Network Tokens" which is of relevance to
> > > facilitate fine grained QoS in 5G networks.
> > >
> > > https://tools.ietf.org/html/draft-yiakoumis-network-tokens-01
> > >
> > > There is also a mailing list in
> > > https://www.ietf.org/mailman/listinfo/network-tokens
> > >
> > > We are planning to present in tsvwg and app aware networking and
> > > possibly have a side meeting on this topic in IETF108.
> > >
> > > Thanks,
> > > Tom
> > >
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