Date: Thu, 9 Aug 2001 13:45:31 -0500 (CDT) From: Nick Rogness <nick@rogness.net> To: Eric Masson <e-masson@kisoft-services.com> Cc: freebsd-questions@freebsd.org Subject: Re: DSL connectivity & ISDN backup Message-ID: <Pine.BSF.4.21.0108091335110.90563-100000@cody.jharris.com> In-Reply-To: <86n159qlgb.fsf@notbsdems.nantes.kisoft-services.com>
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On Thu, 9 Aug 2001, Eric Masson wrote: > > I'll soon get a DSL line for Internet connectivity but as stated in > the following papers (Thanks to Ted Mittlestaedt), DSL hasn't been > designed as a fully reliable media. > http://www.computerbits.com/archive/2001/0200/network0102.html > http://www.computerbits.com/archive/2001/0300/middlestaedt0103.html This depends on which type of DSL and equipment and the amount you are willing to pay for service. The phone companies have been delivering DS-1 local loops on HDSL for years (At least in USWEST territory). Like Mr. Middlestaedt mentions, paying $20-$40 a month for ADSL service will not be as reliable as a Leased line. > > Ted shows a way to add reliability by backing up DSL line via ppp(8) > http://www.computerbits.com/archive/2001/0400/mittelstaedt0104.html > http://www.computerbits.com/archive/2001/0500/mittelstaedt0501.html > > The exposed method has one major drawback, the need for the isp to > create a special configuration for your use and I don't know if the > isp we've chosen will do that. > > Another one is more specific to France where most of the usual DSL > ethernet TAs only support pppoe, thus making ppp(8) mandatory for the > DSL connectivity. So you do not have any arp entry for the address the > isp assigned to you. > > How is it possible in this case to detect DSL line failure and then > change default route to use the backup ppp(8) dialup configuration ? > Monitor the PPPoE session to see when it dies (via logfile or whatever). > Any idea ? > > It would be nice to see this kind of setup handled by ppp(8) via a new > keyword like <backup> which parameter would be the configuration to > use for backup. > Yes, that would be nice. Nick Rogness <nick@rogness.net> - Keep on Routing in a Free World... "FreeBSD: The Power to Serve!" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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