[plug] ADSL failover

Simon Scott simon.scott at flexiplan.com
Thu Aug 16 09:06:00 WST 2001


	Thanks for the reply Glen

	We are still putting a failover modem on the box, but with the
glowing reports of iinet adsl we wont bother automating it and just give the
guy a cheat sheet so he can bring it up if adsl fails.

	BTW, maybe you can answer this, which distros does iinet support
when installing adsl?

	We ended up installing a *bare* RH 7.1 installation with Squid and a
few other things. The machine already has 2 network cards.

	Do you guys insist on installing your own network cards?

	Thanks for the response, its a pity iinet dont offer affordable home
adsl :)





	From:	Glen Lewis <kisa at kisa.com> on 15/08/2001 10:16 PM
	Please respond to plug at plug.linux.org.au@SMTP at Exchange
	To:	plug at plug.linux.org.au@SMTP at Exchange
	cc:	 

	Subject:	Re: [plug] ADSL failover

	On Wed, 15 Aug 2001, Simon Scott wrote:

	> 	Funny, they are getting iinet adsl, but i thought iinet were
using
	> Hel$tra infrastructure? I had bigpong adsl and it sucked the big
one.

	Most of the issues on Telstras ADSL network are downstream from the
point
	where other ISP's get their PVC.  We (iiNet) have had substantially
less
	issues than Telstra - however much of that is the result of giving a
fixed
	IP address to each of the aDSL customers, rather than having the
PPPoE and
	all those authentication issues.

	Glen


	> 
	> 	Yeh, I think the if-down/up scripts will be the way to go.
Or
	> possibly a seperate daemon that monitors these things and makes
sure one or
	> the other is up.
	> 
	> 	Altho Im going to look at Pizzabox and perhaps it has some
way for
	> this to be handled. Even manually would be ok I guess.
	> 
	> 	They wont be serving, so it doesnt matter. 
	> 
	> 	Thanks
	> 
	> 
	> 
	> 	From:	James Bromberger <james at rcpt.to> on 14/08/2001 04:14
PM
	> 	Please respond to plug at plug.linux.org.au@SMTP at Exchange
	> 	To:	plug at plug.linux.org.au@SMTP at Exchange
	> 	cc:	 
	> 
	> 	Subject:	Re: [plug] ADSL failover
	> 
	> 	On Tue, Aug 14, 2001 at 03:25:46PM +0800,
Simon.Scott at flexiplan.com
	> wrote:
	> 	> A friend of mine is setting up a linux box to act as a
gateway for
	> a small
	> 	> network. He plans on getting ADSL, as well as a dialup
account
	> (due to ADSL's
	> 	> problematic nature).
	> 
	> 	I've had very few problems with my iiNet DSL...
	> 
	> 	> Has anyone written/heard of a script which will
automatically dial
	> 
	> 	> in after ADSL fails (plus a few retries)?
	> 
	> 	/etc/network/if-down.d or similar. You can tell pppd to do
something
	> 
	> 	when it exists. Why not tell it to pick up the modem!
	> 
	> 	> If not, can anyone think of the best way of acheiving
this? It
	> would be 
	> 	> nice to
	> 	> go the other way too, where the script would start a cron
job to
	> test ADSL
	> 	> connectivity (maybe via pppoe switches to see if the
access
	> concentrator is
	> 	> visible) every now and then and if ADSL comes up, drop
dial up.
	> 	> 
	> 	> As an aside, if I had a dialup account and ADSL up at the
same
	> time, what would
	> 	> the routing issues be? (ie which would take preference?)
	> 
	> 
	> 	Evil. Assuming you are calling the same service provider,
you can
	> try and 
	> 	get them to figure this out. You may have to delve into BGP
	> broadcasts if 
	> 	you have a protable network block, or Dynamic DNS, if you're
hosting
	> services.
	> 
	> 	If you're just putting web traffic over it, and not serving
stuff
	> up, 
	> 	then it should matter if you change IP addresses.
	> 
	> 	-- 
	> 	 James Bromberger <james_AT_rcpt.to> www.james.rcpt.to
	> 
	> 	 Remainder moved to http://www.james.rcpt.to/james/sig.html
	> 
	> 
	> 
	>
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