got doubt regarding caching server implementation....

[Sanjib Das]

Hi
I have setup a local domain my.domain. & it consists of two machines...
I configured one of them as primary server for my domain & another one
as caching server .For both these servers I'm using BIND-9.2.4 package
whenever I send query (using 'dig' command).....
from the second machine (machine where the caching server is running 
locally) first it looks into its own cache....if its available it sends 
from there 
itself... otherwise sends it to the primary server...
Now say I got a SERVFAIL in the reply (for my request qname=my.domain. and 
qtype=A)
.... in this case I find that caching server automatically again sends the 
same query 
for same qtype.....
I donno exactly why it happens like this..... 

Your comments are always valuable for me......


thanks & regards

Sanjib 

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