A question regarding the db.cache file

Kevin Darcy kcd at daimlerchrysler.com
Wed Jul 13 02:44:08 UTC 2005


Klas Bengtsson wrote:

>Hi!
>
>I am running a BIND 9.3.0 name server. As I understand it, when BIND first 
>starts up, a very low random RTT value is given to each DNS server listed in 
>the db.cache file. This ensures that the name server queries all name 
>servers before choosing the nearest. If this server, however, becomes 
>unreachable, then another one is selected.
>  
>
My understanding is that at the "priming" stage, the root servers are 
tried at random -- no fudging of RTT values necessary -- until a good 
answer is received, and then named stops priming. I could be wrong.

                                                                         
                                          - Kevin




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