nanog mailing list archives
Re: VoIP QOS best practices
From: "Petri Helenius" <pete () he iki fi>
Date: Mon, 10 Feb 2003 22:57:47 +0200
It works fine on 64k connections, okay on many 9600bps connections. T1 is way more than is necessary.
The correct answer here is that "it depends". Most multimegabit connections are underutilized enough not to introduce significant jitter to change VoIP behaviour, however specially when going to corporate networks where peak hour usage is very near or at available bandwidth the mechanics are different. However, in our experience VoIP performance is more often hurt by either broken router code or misconfigured devices in the path (route cache purges, duplex mismatches, etc.) than actual lack of bandwidth. If it does not cost you, it´s a good idea to let the VoIP packets first to a low-bandwidth link but putting serious engineering or money for hardware is not neccessary. Fancy queueing will give you more consistent performance when something else uses up the link(s). Pete
Current thread:
- RE: VoIP QOS best practices, (continued)
- RE: VoIP QOS best practices chaim fried (Feb 10)
- RE: VoIP QOS best practices Charles Youse (Feb 10)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)
- Re: VoIP QOS best practices Valdis . Kletnieks (Feb 10)
- RE: VoIP QOS best practices Charles Youse (Feb 10)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)
- RE: VoIP QOS best practices Alec H. Peterson (Feb 10)
- Re: VoIP QOS best practices Jared Mauch (Feb 10)
- Re: VoIP QOS best practices Bill Woodcock (Feb 10)
- Re[2]: VoIP QOS best practices John L Crain (Feb 10)
- Re: VoIP QOS best practices Petri Helenius (Feb 10)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)
- Re: VoIP QOS best practices Jack Bates (Feb 10)
- RE: VoIP QOS best practices Charles Youse (Feb 10)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)
- Re: VoIP QOS best practices Aditya (Feb 10)
- Re: VoIP QOS best practices Charles Sprickman (Feb 11)
- Re: VoIP QOS best practices John Todd (Feb 11)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)
- RE: VoIP QOS best practices Bill Woodcock (Feb 10)