QoS for Office365

Mon Jul 8 20:01:56 UTC 2019

> Warren Kumari
> Sent: Monday, July 8, 2019 8:06 PM
> 
> On Mon, Jul 8, 2019 at 2:59 PM Mark Tinka <mark.tinka at seacom.mu> wrote:
> >
> >
> >
> > On 8/Jul/19 20:50, Warren Kumari wrote:
> >
> > > Depends -- I'd note that the OP said "How can we mark the trafic
> > > while keeping the security..." -- some people use the COS / DSCP
> > > bits to annotate packets with security information, and use that to
> > > make *security decisions* instead of using it to prioritize traffic.
> > > Now, I'm not saying that this is why the OP is asking (or that I
> > > think it is a good idea, because, well,  I don't think it is!), but
> > > it *is* a practice worth knowing about.
> >
> > Assuming we are discussing such packets traversing the public
> > Internet, a little tricky to expect IPP/DSCP values to remain intact
> > in the life of an Internet packet.
> 
> Goodness no -- I've only ever seen this done within a single network
> (including inside some tunnels); expecting this to work across the Big I-
> internet is crazypants time. I personally think that the idea itself is stupid,
> but, well, their network, their rules, and it "works" for them.
> 
And yet the SD-WAN promising MPLS experience over the internet and other BS sells like crazy ;)

adam