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. 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. -Matt
If you can get a machine at the other end of the link you could use the Mikrotik bandwidth tester You can find it here - http://www.mikrotik.com/download.html Femi -----Original Message----- From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matt Darnell Sent: 16 July 2008 04:23 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] Two way bandwidth test 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. 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. -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
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
On Jul 16, 2008, at 3:11 AM, Femi wrote:> If you can get a machine at the other end of the link you could use > the > Mikrotik bandwidth tester > You can find it here - http://www.mikrotik.com/download.html > > Femior just run iperf on each end http://sourceforge.net/projects/iperf
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Matt Darnell wrote:> Does anyone know of a bandwidth test that tests the upload with the download?apt-get install iperf man iperf - -- Kind Regards, Matt Riddell Director _______________________________________________ http://www.venturevoip.com (Great new VoIP end to end solution) http://www.venturevoip.com/news.php (Daily Asterisk News - html) http://www.venturevoip.com/newrssfeed.php (Daily Asterisk News - rss) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIfrbtDQNt8rg0Kp4RAlE6AJwO6c1XIfQFx7Sl9vIMMdAOL8eiJgCgky1o NekPCjRfPDTwRV3QIhzkeIY=5SJV -----END PGP SIGNATURE-----