nanog mailing list archives
RE: QOS or more bandwidth
From: smd () clock org (Sean M. Doran)
Date: Tue, 29 May 2001 09:57:49 -0700 (PDT)
Pete Kruckenberg <pete () kruckenberg com> writes: | The VoIP QoS problem is interesting. Barring congestion in | the network, VoIP just has a problem with the fact that IP | communications are frame-oriented (and a VoIP packet gets | behind a 1536-byte Ethernet frame in the transmit queue). You *really* want to study Peter Lothberg's excellent queue graphs in his presentation to the Phoenix NANOG a few days ago. They will probably find themselves on the NANOG web site soon, if they are not there already. Speaking of Peter, I often get calls from him which start off with, "you know, Voice Over IP doesn't work without ATM, RSVP, QoS, LAN emulation, MPLS, traffic engineering, and fancy queueing!". It's how I know it's him, when he's making a VOIP call through MAE-EAST, since the connection is much too _clear_ to tell by listening alone. I hope that helps answer your question about what technologies are needed to improve VOIP sound quality, rather than the interesting ones about directories. Sean.
Current thread:
- Re: More BW, Less Taxes, (continued)
- Re: More BW, Less Taxes Stephen J. Wilcox (May 29)
- Re: More BW, Less Taxes Alex Rubenstein (May 29)
- Re: More BW, Less Taxes Joe Abley (May 29)
- Re: More BW, Less Taxes Daniel Senie (May 29)
- Re: More BW, Less Taxes Jim Mercer (May 29)
- Re: More BW, Less Taxes Valdis . Kletnieks (May 29)
- Message not available
- Re: More BW, Less Taxes Jim Mercer (May 30)
- Re: More BW, Less Taxes Christopher A. Woodfield (May 30)
- Re: More BW, Less Taxes Albert Meyer (May 30)
- RE: QOS or more bandwidth Pete Kruckenberg (May 29)
- Re: QOS or more bandwidth Eric A. Hall (May 29)
- Last Mile QoS WAS: RE: QOS or more bandwidth Nathan Stratton (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Wayne Bouchard (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidthy Rafi Sadowsky (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Pete Kruckenberg (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Nathan Stratton (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Rafi Sadowsky (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Nathan Stratton (May 29)
- Re: Last Mile QoS WAS: RE: QOS or more bandwidth Randy Bush (May 29)