Checking and testing QoS after Procurve setup

[oliverm]

Hi All

So we've configured our procurve switches with a couple of basic vlans, one for data and one for voice. The Voice one has been marked as a voice vlan which I believe gives it a QoS priority of 5. 

Everything appears to work in our testing, devices on the data vlan get access to the data vlan, voip devices can only access the voip vlan, and theres the firewall that can access both, and it's all super.

However before we go live with the setup I want to test that the prioritisation is working. Short of trying to max out the switches and make phone calls (in our test setup we have only a few pcs and phones but we have tried) is there any way to *show* that the prioritisation is working (or will work when in situ)?

Does anyone have any guides on how to test this or know of any easy-to-use tools that can show us the QoS prioritisation going on on the network?

Olly

[Peter_Debruyne]

Hi,

I typically use several concurrent sessions of iperf to test qos. This would be a concurrent test for data and voice. Connect 1 client to a voice port vlan (untagged), other to a data port, then run concurrent tests.

This test would check the qos on the uplink:

### TEST1 - DATA
# ON SERVER : -s Server -i Interval stats -p port
iperf -s -i 1 -p 6001

# ON CLIENT : -c Client : specify server IP -t time
iperf -c x.x.x.x -i 1 -p 6001 -t 600

### TEST2 : Voice simulation
# ON SERVER (simulates receiving call) -u UDP -p port number (use a port which would be similar to your VOIP phones)
iperf -s -i 1 -p 50001 -u

# ON CLIENT. -l packetlength (voice is typically small packets) -b bandwidth (multiply based on number of concurrent calls)
iperf -c x.x.x.x -i 1 -p 50001 -u  -t 600 -l 200 -b 64K

Hope this helps,

Best regards,Peter.

[YenLin]

Hi Oliverm, Our ISP install this at our side, I think maybe you would interested in it.
http://www.exfo.com/en/Products/Quality-of-Service-Assessment/Converged-Service-Assurance/VoIP-Service-Assurance/