We have a site with a 25/25 fiber connection that experiences periods of high saturation. The site is also leveraging a hosted phone system.
I'm curious what this community would advise in terms of traffic shaping. Here are the facts:
What can/should I do to fix this?
I've thought about artificially limiting the "non-phone" network to 20x20 this way the phones would always have 5mbps. However, last time I tested, there wasn't a way to limit the aggregate throughput on a network - only on a "per client" level.
Your wan1 shaper is also configured at 25/25?
Did you check with a packet capture if rtp packets are tagged with dscp 46?
Voip problems are about the voip quality or call setups problems?
Voip problems are call quality, no issues with call setups, AFAIK.
Wan1 shaper is set to 25/25.
No, I have not done a packet capture, but I will do that right now.
Best is a seperate voip line.
However you can try set the pc client (localnet:x.x.x.x/xx) to prio low.
And maybe set a cap of 10Mbit on the client speed to prevent one client to peek to 25Mbit
Separate voip line is kind of a cop out isn't it? Isn't that why we have traffic shaping for? ...or am I just fanaticizing?
I have done a cap of 10Mbit/client, but that still doesn't fix 3 clients from doing something at the same time.
ALSO, I just found out the real issue is that they are dropping calls, NOT audio issues. I'm thinking this changes the picture a bit and the issue may not be QoS at all.
I would use a separate circuit for the VoIP line.
You can shape the OUTBOUND traffic, but you can not control the traffic being received until AFTER you have received it and it has soaked up the bandwidth on your circuit.