ITD_Technician
asked on
How do you setup QOS to give traffic "A" absolute priority over traffic "B". Difficulty: traffic "A" is time-sensistive.
Hello,
After reading the advanced routing HOWTO and experimenting, I've been unable to accomplish what I need: to give traffic A (VoIP traffic, in this case) absolute priority over traffic B (all other traffic). Each time I think I've got it, I find I can degrade the audio quality by flooding the uplink with traffic. Because "audio quality" is difficult to describe, I also left a ping going during the flood-test: it would jump randomly between 10ms to 100ms. Anyways.. here's a full list of what I have available:
* the router is a modern machine running Linux 2.4.32 (vanilla)
* CBQ, HTB, CSZ, HFSC and PRIO are available as modules
* connection is DSL, synched at 3000kbps down, 512kbps up
* "traffic A" packets are marked for expedited forwarding (rfc2598) for easy classification
HFSC looks like a promissing solution, but documentation is scarce.
Thanks, and good luck!
After reading the advanced routing HOWTO and experimenting, I've been unable to accomplish what I need: to give traffic A (VoIP traffic, in this case) absolute priority over traffic B (all other traffic). Each time I think I've got it, I find I can degrade the audio quality by flooding the uplink with traffic. Because "audio quality" is difficult to describe, I also left a ping going during the flood-test: it would jump randomly between 10ms to 100ms. Anyways.. here's a full list of what I have available:
* the router is a modern machine running Linux 2.4.32 (vanilla)
* CBQ, HTB, CSZ, HFSC and PRIO are available as modules
* connection is DSL, synched at 3000kbps down, 512kbps up
* "traffic A" packets are marked for expedited forwarding (rfc2598) for easy classification
HFSC looks like a promissing solution, but documentation is scarce.
Thanks, and good luck!
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Here's another alternative if you have a Speedtouch router : http://www.voip-info.org/wiki/view/QoS+and+Port+Forwarding+Speedtouch+510v4
Speedtouch routers have built in QoS.
Speedtouch routers have built in QoS.
ASKER
Thanks for your responses. I'll be trying them out and getting back to you.
PRIO gives absolute priority to some traffic over all other traffic types, but for outgoing traffic only.