On Wed, Jul 16, 2008 at 3:07 AM, Gordon Henderson <[EMAIL PROTECTED]> wrote: > On Tue, 15 Jul 2008, Matt Darnell wrote: > >> Does anyone know of a bandwidth test that tests the upload with the download? >> >> All of the ones I can find will test the upload then the download. >> >> I from experience I have found that a 3M/768K DSL can only do about >> 256K/256K simultaneously. > > You have a sucky ISP or router. > >> The only way I have of testing it is with FTP uploads and downloads or >> P2P sharing. >> >> I would like something more formal that would keep the upload speed >> the same as the download. VoIP as you know is symmetric. >> >> The one VoIP test I find doesn't tell you how many calls you can >> handle, just if it is VoIP ready. > > iperf > > You run a "server" on one site, and a "client" on the other. > > So on site a: > > iperf -s -u > > then on the other site: > > iperf -c ip.of.site.a -u -b 80K -l 160 > > That's a one-way test from site B to site A. To do a test both ways, one > at a time: > > iperf -c ip.of.site.a -u -b 80K -l 160 -r > > To test both ways at the same time: > > iperf -c ip.of.site.a -u -b 80K -l 160 -d > > The -b parameter is the bandwidth to use, so start at 80K (one SIP link) > and go up from there. The -l is the packet length - VoIP packets are > typically 160 bytes. > > The one thing it can't do it send the packets in a timed manner - > simulating an RTP stream... ie. it needs a "packets per second" parameter > rather than a bandwidth parameter, but this is usually good enough to find > gross problems with links, I've found. > > Gordon
iperf it is! Thanks for the tip. -Matt _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
