question about dns query distribution

[benjamin fernandis]

HI Lawrence,

We have recursive / caching name server for our Broadband internet
services. And we have 60-40 traffic ratio. I mean 60 % queries comes
on primary and 40% on secondary.

Why primary does not getting 100% ?

Is there any way to do it ? or what is the reason behind it that both
servers' having queries ?

BR
Ben

On Thu, Feb 7, 2013 at 2:42 AM, Lawrence K. Chen, P.Eng. <lkchen at ksu.edu> wrote:
> Are these authoritative nameservers or resolving DNS servers?
>
> If the latter, its probably because everybody has resolv.conf's listing
> ns1.tbd.com first and ns2.tbd.com second.
>
> We used to have 3 recursive/caching servers....  x.x.x.2, x.x.x.3, x.x.x.4.
> x.x.x.2 would get heavily used , with the other two practically being idle.
> Later the networking group changed DHCP to hand out x.x.x.3 as the first
> nameserver.  So '2' mainly sees queries from most systems not using DHCP and
> '3' mainly sees queries from systems using DHCP.  And, most of my systems
> use '4' :)  They had talked about having DHCP use 3 first or 4 first for
> different parts of campus, but... they probably don't want to touch it,
> since it hasn't been updated since it was turned on 6+ years ago (its
> running ISC dhcpd v3.0.4.)
>
> Though '4' is out in our powerplant where it only has 100BaseT.  '2' & '3'
> are in our datacenter with gigabit.
>
> They all used to live out in the powerplant originally.  But, as the old
> hardware started failing, I scrounged up some old servers in the datacenter
> to replace them, but didn't get very far on doing the physical replacement
> process....  Perhaps I'll do better as these current hardware nears EOL.
>
> ________________________________
>
>
> Recently noticed that for 2 nameservers ns1.tbd.com and ns2.tbd.com (names
> are changed to protect the innocent) the first nameserver consistently
> receives twice as many queries as the 2nd nameserver.
> Who can tell me why queries are distributed this way?
> Any ideas?
> I assume it's something relatively simple.
> Thank you.
> Marty
>
>
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> --
> Who: Lawrence K. Chen, P.Eng. - W0LKC - Senior Unix Systems Administrator
> For: Enterprise Server Technologies (EST) -- & SafeZone Ally
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> Kansas State University, 109 East Stadium, Manhattan, KS 66506-3102
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