Larry hit it right on the head. WFQ is a poor choice for voice, and you'll probably notice a huge difference when moving to LLQ.
-- RFC 1149 Compliant. ""Roberts, Larry"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I have 6 sites that have active queuing for VoIP traffic on the Qwest VPN > network. ( and 100 or so others that don't ) > > I have heard good things about the quality , to the point that they are > starting to request other sites have this as well. > > I configured it for LLQ on the interface, and required that they send their > voice traffic with the DSCP already set. > I guess I could have done it for them, but if they have the ability to mark > the traffic, I let the Voice Switches do it. > > I believe that I used a priority of 128k for the Voice Queue, and matched > that via a bandwidth statement on the class default. > It depends on the amount of data that you are going to have going between > sites, and the compression that you use. > I'm being told that they are using 729a, but that's just what I'm told. > > If jitter is the problem , LLQ should fix it as the variance is most likely > caused by your routers. I say this knowing that with the loss of customers, > the VPN has plenty of spare bandwidth to use :) > > Thanks > > Larry > > > -----Original Message----- > From: dj [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 21, 2002 10:18 AM > To: [EMAIL PROTECTED] > Subject: VoIP over Qwest VPN WAN backbone [7:51837] > > > Has anyone deployed VoIP successfully across Qwest's WAN backbone? I have 2 > sites connected over Qwest's VPN service (consists of running > IPSec over Qwest's MPLS backbone). Qwest says they currently have no > QOS support in backbone, but the backbone has huge capacity (OC-192 pipes), > which Qwest asserts should support VoIP apps. Round trip ping times across > the WAN are typically 50 msec. > > I have the traditional VoIP problem of excessive jitter causing poor voice > quality. Currently have 2621 routers at each site running WFQ wth Voice > packets marked with IP precedence 5 for voice data, and IP precedence 3 for > voice control. I am considering re-configuring the routers to run > PQ-CBWFQ. > > If anyone has successfully got VoIP running successfully across this Qwest's > backbone, I would be interested in hearing your approach and which config > worked. Even though the Qwest WAN has huge capacity, but no QOS support, > can it really support real-time apps like VoIP??? > > thanks, > dj > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51859&t=51837 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
