You are trying to use the wrong tools. Yes it is possible
to kind of make this work by using round-robin DNS, or DNS
servers with really low TTLs that give out the "current"
good address, but this is all a hack that will be unreliable.
The time tested way to do this is as follows:
Get an AS number and address space from arin, and then use
BGP4 to peer with your ISPs. I believe that zebra
http://www.zebra.org) supports BGP4.
This way you have one constant address space that is
reachable through multiple ISPs. You will need to get
to the right people within your ISPs to find someone
who knows what you are talking about (dialup/DSL support
will likely have no idea).
If you're only using one ISP this is easier since you
won't need to get address space from arin, and they
may be able to assing a private AS for you that they
use internally.
[EMAIL PROTECTED] wrote:
>
> re: Do you have your own DNS servers and domain? Or is your ISP currently
> providing it for you?
>
> Secondly, if you're connecting to two seperate ISPs, then you're probably
> ending up with two different IPs for your DSL service endpoints (your ends).
> I don't know a lot about DSL, not having used it yet....
> --
>
> I am aware of the dns issues like caching and I think it is a small
> price to pay and am willing to deal with that.
>
> But i just confirmed something I long suspected. my network's behavior
> seems to change frequently. sometimes certain things work, then I test
> them
> later and they are not working. I just proved that my network has problems
> dependent on where I am accessing it from.
>
> if I telnet from work to my gateway at home, and ping an internal machine,
> it sends on ping and nothing else happens. however if i telnet to a
> different machine at home, then to the gateway, then ping the same internal
> machine from the same gateway, it pings fine. so this explains why I
> thought it kept working and not working; when I test from home it works, and
> at work it doesn't work.
>
> this makes absolutely no sense to me. just to clarify, I am logging into
> my gateway and pinging the same machine, but get different results if I
> telnet to the gateway from different locations.
>
> I have been trying to get a multihomed system working for over a year
> (because the phone company keeps ^%&#@! the dsl lines). I actually have
> 3 lines, one of which has racked up 7 months of down time in the past year!
> that is why i need to multihome.
>
> there are many tools; ipmasq, iproute2, nat, etc. i have no idea what to use
> and I have tried them all in all combinations. each one works in some
> cases but not others.
>
> I have it to the point where internal machines can finally communicate
> with each other, but now the external machines cannot reach the internal
> machines.
>
> what I want to do is simple; 2 dsl lines, each web server accessible on either
> line. doesn't sound like a big deal. but I don't expect it to ever work
> anymore. linux just can't do it. on usenet i find hundreds of people
> trying to do the same thing without success.
>
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