[Asterisk-Users] Re: load balancing 20 asterisk servers

[Domjan Attila]

On Wed, 2005-02-09 at 20:15 +0000, Gary Stimson wrote:
> On Wednesday 02 February 2005 23:38, Jens Vagelpohl wrote:
> > On Feb 3, 2005, at 0:03, Miguel Ruiz Velasco Sobrino wrote:
> > > --- asterisk-users-request at lists.digium.com wrote:
> > >> The DNS approach does not handle single or multiple system failures,
> > >> only very elementary load balancing over a lengthy period of time.
> > >
> > > Are you shure of that? I'm aware that the load criteria is trickier,
> > > but very possible.
> >
> > Operating systems and probably a lot of devices *cache* the results of
> > DNS lookups. That means removing A records won't do any good.
> 
> If you give the DJBDNS name server multiple IPs for the same machine, it will 
> return a set of 8 at random. Won't Windows (and hardphones??) then try those 
> in order until they succeed? If the address they reach later becomes 
> unavailable, will the be bright enough to try the other addresses?
> 
> The hard phones must surely expire their DNS cache at some point?
> 
Grandstream phones works fine.

> Gary
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-- 
Domjan Attila <adomjan at tvnet.hu>