Date: Fri, 11 Jul 2003 10:54:34 +0300 (EAT) From: Noah K Sematimba <ksemat@ksemat.co.ug> To: Max Clark <max.clark@media.net> Cc: freebsd-isp@freebsd.org Subject: RE: How do I max a 6Mbps link Message-ID: <20030711104911.I317@ksemat.co.ug> In-Reply-To: <ILENIMHFIPIBHJLCDEHKEEEGCJAA.max.clark@media.net> References: <ILENIMHFIPIBHJLCDEHKEEEGCJAA.max.clark@media.net>
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First try to figure out whether you actually have 6Mbps dedicated link through all the hops. pathchar and pchar are very good at this. You can find them in: /usr/ports/net/pathchar /usr/ports/net/pchar To tell you the sizes of the pipe at various hops. However it is quite slow and takes some time doing this so you may have to leave it running a few hours or pipe the output to a file for later checking if you have many hops and some may scroll past the screen in your absence. Noah. On Wed, 9 Jul 2003, Max Clark wrote: > > My initial guess would be that you don't have a 6mbps dedicated pipe > across the > atlantic and that your packets are competing for bandwidth, thus the reduced > actual throughput. > > This is correct, it's an Internet link with 100Mbps on one side and 3 bonded > E1s on the other. We are using a commercial product (running on windows) now > and it is able to sustain 5Mbit/s so I have to believe that FreeBSD could do > the same. > > -Max > > -----Original Message----- > From: Dave [Hawk-Systems] [mailto:dave@hawk-systems.com] > Sent: Wednesday, July 09, 2003 10:45 AM > To: Max Clark; Simon > Cc: freebsd-isp@freebsd.org > Subject: RE: How do I max a 6Mbps link > > > >Let me give a little more detail. This is a 6Mbps internet link that > >traverses the atlantic and 25 router hops. "out of the box" I can only > >sustain 170KBps. We are currently evaluating a REALLY expensive commercial > >solution, but I would rather know I was going to be paid than spend $50K > per > >link. > > > >What can I do to help freebsd saturate this link? > > My initial guess would be that you don't have a 6mbps dedicated pipe across > the > atlantic and that your packets are competing for bandwidth, thus the reduced > actual throughput. > > If you put the boxes side by side, they could easily max a 6mbps link, as > such > the problem exists on the network (or the WAN link for that matter). Check > to > see if you have 6mbps dedicated, not only at both ends, but through all the > hops > in between. > > Dave > > > _______________________________________________ > freebsd-isp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-isp > To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org" >
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