Cisco Distributed Director

[Pete Taylor]

The DD only returns a single A record from it's pool of 8 addresses.
BIND doesn't have a chance to do any round-robining. 

We've tested this with 8.2.2PL5 as well a 4.9.7 and the results are the
same. Using Werner's fix (removing the equality check from the staleness
check) on an 8.2.2PL5 server fixes the problem that we see. I guess the
question is - should the equality check be there?

I sould also say that all this is happening between clients and servers
that are on our internal network.

Regards,

Pete

Kevin Darcy wrote:
> 
> I still don't get it. BIND 4.9.7 implemented *true* round-robin, so the load
> should be split as equally as possible for DNS-based load-balancing. Could
> it be that the low TTL is *causing* some sort of skewing? I seem to recall
> that BIND 4 didn't deal very well with 0 TTL's.
> 
> Have you tried it with a *higher* TTL value? I know it seems rather
> paradoxical...
> 
> Regardless, you should upgrade.
> 
> - Kevin