Date: Sat, 07 Apr 2007 16:01:17 +0100 From: "Bruce M. Simpson" <bms@FreeBSD.org> To: Rajkumar S <rajkumars@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: Spillover routing? Message-ID: <4617B23D.1090502@FreeBSD.org> In-Reply-To: <64de5c8b0704060004s5d2f4416if88f32cc45c77aba@mail.gmail.com> References: <64de5c8b0704060004s5d2f4416if88f32cc45c77aba@mail.gmail.com>
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Rajkumar S wrote: > Hi, > > I have a low cost 128kbps and a high cost 512 kbps link to internet. > Is it possible to do a "spillover" routing so that the high cost link > is used only when the low cost link is, say, used more than 80%. This feature is almost certainly not going to be present in the base system. What you would need to do to implement this is to configure a part of the kernel to perform bandwidth measurements and make an upcall to bring up the other link in a dial-on-demand style configuration. Add NAT into the mix and it gets even more interesting. I believe pf+altq may have the potential to do this however I could not help you with where to begin re configuring it to do so, so I wish you best of luck in your research. Regards, BMS
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