We have both the drop we normally use from our regular
ISP, and a backup drop from our backup ISP. Initially
we figured changeover would be real easy -- just
unplug one and plug in the other, no effect on
Shorewall, no firewall reboot, no secondary
consequences.
(We don't need the complication of load balancing
because both drops are plenty wide enough to carry all
our traffic by themselves. We don't need an unattended
failover scheme because we can monitor and physically
switch the cables just as quickly. And we accept that
most of our connections will break once every few
years when an emergency forces us to switch drops.
We're fully satisfied with this "dumb" solution and
aren't motivated to try to change it; we just want to
make it work.)
Here's our potential problem: our static IP was of
course delegated by our regular ISP, and we suspect it
_may_ be specific to that ISP only. If that's the case
and we use the static IP address from our regular ISP
with our backup drop, we _may_ be be ticking off the
ISPs, and it _may_ not even work.
What do other folks who have more than one ISP and
static IP addresses do?
thanks!
-Chuck Kollars
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