[help]Is there a DNS sofeware has "Load Balance" feature?

[maccn]

Our company is going to Xserv.

On os9, we're using QuickDNS 3 which has the "Load Balance" feature. But it seems that the QuickDNS for OSX version doesn't have the funtion(maybe becuase it bases on "bind"?)

Anybody know a dns software which has the "Load Balance" feature for OSX?

Really grateful for your reply

[rhg]

Simpy associate multiple IP addresses with the same name. This will cause bind to pick the addresses in a "round-robin" manner.

[maccn]

But "round-robin" can only implement "Load Sharing", instead of "Load Balancing".

In "round-robin" manner, if one server is down, bind will still send request to the server, that is not good.

Is there a better solution?

Thanks you, rhg ,anyway

[rhg]

So how did QuickDNS 3 solve this issue?

There is a tool named nsupdate which comes with bind, you can use this to dynamically your ns config. I can imagine a shell script which periodically watches certain network resources, removing them from the ns config as soon as they become unavailable. But this isn't real load balancing still.