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Infoblox Bind DNS Forwarder timeouts

Techie
Posts: 3
2678     0

When multiple forwarders have been configured, what algorythym does Infoblox Bind use to decide when/how it uses the next forwarder in the list?

 

As far as I know, a standard version of Bind will start with the first forwarder in the list and then use ForwardingTimeout or RecursionTimeout values to determine when it will proceed to the next forwarder in its list.

 

Thanks in advance.

Re: Infoblox Bind DNS Forwarder timeouts

Expert
Posts: 171
2679     0

You can't rely on it using them in the order they are specified. BIND uses RTT calculations to work out which forwarder is "nearest", so you might have three forwarders defined but Infoblox ends up uses the last one in the list if it has a lower RTT than the others.

 

Paul Roberts
PCN (UK) Ltd

All opinions expressed are my own and not representative of PCN Inc./PCN (UK) Ltd. E&OE
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