Recommended idle timeout setting for DNS (UDP)?

I don't have any experience testing DNS-specific VIPs, so I'd rather wait for someone else to provide their thoughts before you try something in production.

 

 

That said...

 

 

I would suggest using separate VIPs for TCP and UDP. I would think you could potentially set the UDP VIP idle timeout to 0 and the TCP VIP idle timeout to 15 seconds (or however long you expect the longest reasonable zone transfer to take). I'd expect the number of UDP requests would be a much greater proportion of the total entries anyhow. So the TCP idle timeout probably wouldn't make as big a difference as the UDP configuration.

 

 

Aaron