I disagree. This is exactly what Canopy does. DSCP12/AF is sent over the
HP channel. Look at the default DiffServ table and see for yourself.
Many managed switches are set up exactly the same way, except they have
more queues, and Canopy only has MIR and HP. Well, there's LP CIR, but
lets not get into that. ePMP just has "priority" which I assume means
priority over everything else.
I need a way to correct stupid manufacturer's mistakes (Grandstream
being the worst offender). Lots of their devices ALWAYS send SIP packets
as DSCP12 and this CANNOT be changed. Or the other one I mentioned, the
GXP phones have one DSCP setting and this changes both SIP and RTP. I'm
disgusted with their stupidity, but unfortunately it has to be supported
because those devices aren't going away.
It's totally doable and Cambium could add it by default, saving me time
configuring every radio with it. Or just make DiffServ on ePMP
work/configure like Canopy.
I don't care what's wrong or right. I care about shit working right now
and customers not being pissy.
So the burden falls on the network as usual. It's always our fault.
Sometimes I just don't know how I haven't murdered people. If I drank,
it would probably happen. And I'm finding myself agreeing with that one
guy Steve every other day now. Stupidity has no limit.
On 6/6/2015 10:31 PM, Faisal Imtiaz wrote:
Yo Cambium, you need to add DSCP 12 (Assured Forwarding) in addition to
DSCP 46 (Expedited Forwarding) to the default VoIP priority
configuration.
That would be a mistake and the wrong thing to do.
We're finding more devices sending SIP packets as AF and
RTP as EF.
When a device is mis-configured, why should the burden of dealing with that
mis-configurtion as a default fall on another device
There is plenty of flexibility to override the wrong setup of a device, if that
is they way you want to correct it in your radios...
(Which by all standards would be the wrong way to fix it...but more power to
you).
Two wrongs don't make a right..
Regards.
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
Help-desk: (305)663-5518 Option 2 or Email: [email protected]
----- Original Message -----
From: "George Skorup" <[email protected]>
To: [email protected]
Sent: Saturday, June 6, 2015 10:27:05 PM
Subject: [AFMUG] ePMP VoIP QoS
Yo Cambium, you need to add DSCP 12 (Assured Forwarding) in addition to
DSCP 46 (Expedited Forwarding) to the default VoIP priority
configuration. We're finding more devices sending SIP packets as AF and
RTP as EF. AF isn't prioritized and out-of-band signaling (prompts, etc)
are sent as SIP messages so sometimes these are getting dropped, not to
mention registrations, invites, etc. And more devices are stupid (mostly
Grandstream), they only let you set ONE priority value for the entire
device. These are coming default as DSCP12/AF. I've tried to get
everyone to change this to 46, but they don't remember.
Or just apply the whole Canopy DiffServ table. We've never had to change
any of those code points. Turn HP on, it just works.
