Alright, so we've got a few challenges here. We're going to do some translation
. We start with
DSCP-55. We're going to translate this to a user priority. Well, if we're
translating to a user
priority, we simply take this down to the nearest multiple of eight. So that
would be 48. And then
we divide it by eight, or we could just divide this by eight and scrap the
remainder. However,
we want to think about this. So ultimately, 55 is going to translate to UP-6.
Now we're going from
UP-2 to DSCP. This is a little bit simpler. We simply multiply by eight, and we WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
UP-2 to DSCP. This is a little bit simpler. We simply multiply by eight, and we
see we get a
DSCP-F16. But remember, this does get us into trouble if we have a voice over
IP frame.
That leverages a UP-6. This gets translated to a DSCP value of 48, which is why
we want to use
some of those precious metal policies. So this is not a challenge question. It
's just a reminder of
what one of the issues might be. Now, lastly, we have a wireless SSID that has
a mix of normal users.
So we've got some laptops out here, maybe some mobile devices, as well as video WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So we've got some laptops out here, maybe some mobile devices, as well as video
conferencing,
which is kind of interesting. So we might actually have users trying to video
conference with one
another through the wireless, or maybe to other wired users. But either way, we
don't have any
wireless phones. So which catalyst metal policy should be used? The answer here
, believe it or not,
is platinum. If you got this, then good job paying attention. We say, "Well,
wait a second,
platinum's supposed to be for a voice over IP." Sure. But video conferencing is WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
platinum's supposed to be for a voice over IP." Sure. But video conferencing is
not only real-time
traffic. It actually uses voice over IP as part of that, which is why it's so
critical that we use
the platinum policy. Remember, we care about the highest common denominator,
not the lowest
common denominator, which is why we've got normal user traffic on there, but we
're still going to
apply a platinum policy to that SSID. So our key takeaways from the skills,
just making sure we
understand how our wireless QoS mechanisms, especially the user priority WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
understand how our wireless QoS mechanisms, especially the user priority
translates to DSCP
and the wired world in a real-world scenario, we're going to need to evaluate
some of those policies
and make sure that we get the right policies and the right SSIDs. And a lot of
this just stems from
wireless needing to be able to prioritize traffic. So as a wireless station, I
need to prioritize
my traffic, not over other traffic that I have on me, like a switch would, but
I need to prioritize
some of my traffic over some of your traffic as another wireless device, which
makes things WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
makes things
pretty interesting in the end. I hope there's been informative for you, and I'd
like to thank you for