Re: Multiple DSLs, and switching incoming route upon failure?
On Mon, Jun 25, 2001 at 06:00:44PM +1000, Jeremy Lunn wrote:
> On Mon, Jun 25, 2001 at 01:09:13AM -0400, Fraser Campbell wrote:
> > Why not have a DNS server on each network announcing different IPs for each
> > service and then multi-home each server? DNS on DSL1 would only annouunce
> > IPs from DSL1, and DNS on DSL2 would only announce IPs from DSL2. Due to the
> > way DNS servers are used in a round-robin fashion you should get crude load
> > balancing ... if DSL1 goes down only the DNS server in DSL2 would be
> > reachable and therefore only DSL2 IPs handed out.
> How is that going to be any better than having multiple A records?
> Apart from the fact that it'd be more complex to maintain.
There should be an almost 0 TTL on each DNS server, and both of them
would be primary for the zone, but with different data.
But well, here in France, one leased line is more reliable than 2 DSL