<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>Ok, that makes sense.</div><div><br></div><div>I’m surprised by the amount of overhead in ADSL / PPPoE / LLC. My VOIP phone sends exactly 50 UDP packets / second of length 32, as reported by tcpdump. That’s a data rate of 24kbps, taking the 28 byte UDP header into account. But “fireqos status” shows a rate of 66kbps. After some research, it looks like each VOIP packet breaks down like this:</div><div><br></div><div> 32 bytes data</div><div> 28 bytes UDP+IPv4 header</div><div> 96 bytes MAC, PPP, PPPoE, ATM, AAL5 (<a href="http://www.technicolorbroadbandpartner.com/getfile.php?id=525">http://www.technicolorbroadbandpartner.com/getfile.php?id=525</a>)</div><div><br></div><div>No wonder my previous custom QoS script never worked for VOIP very well, the overheads are very high and I never took them into account. FireQOS is really useful for this.</div><div><br></div><div>Thanks for the response.</div><div><br></div><div><div>On May 5, 2014, at 9:41 AM, Tsaousis, Costa <<a href="mailto:costa@tsaousis.gr">costa@tsaousis.gr</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Hi,<div><br></div><div>the rates should be the final, with overheads.</div><div>If you compare tc values to actual network values you will se the difference. The network interface reports smaller numbers.</div>
<div><br></div><div>Costa</div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, May 4, 2014 at 5:26 PM, Phineas Gage <span dir="ltr"><<a href="mailto:phineas919@gmail.com" target="_blank">phineas919@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">When entering rates for a class in FireQOS, should they be with packet overheads or without?<br>
<br>
When a VOIP call is active in my environment (codec unknown) I see a rate of 66 show up in the VOIP class, pretty consistently. What I’m trying to figure out is if this is the rate I should have configured in my fireqos.conf (maybe with some padding), or if it should be something smaller, without overhead.<br>
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