Can I build a new DNS/BIND system parallel to our existing DNS production system?

[Samad Agha]

Thanks Daniel, I really appreciate your help.

SA

On Thu, May 3, 2012 at 1:34 PM, Daniel Deighton <ddeighton-isc at aplura.com>wrote:

>
>
> On 05/03/2012 02:44 PM, Samad Agha wrote:
> > Thanks for your help Eivind.
> >
> >>Depends, how long is a piece of string? I don't know what amount of
> >>traffic you're currently seeing, or what your uptime requirements are.
> >
> > - Are there tools to find out about current amount of traffic?
> > - Our uptime requirements are basically from 6am to 6pm during city's
> > business hours.
> >
> >>Estimate what amount of traffic you're seeing during prime time. How
> > many >queries per second?
> >
> > - Again, how do I find out?
>
> It is fairly easy to find out your query load using BIND. You will just
> need to enable query logging (if it isn't already enabled) and use the
> data to calculate your queries per second from the data.
>
> Getting the information from your Windows DNS servers is not as easy.
> You will likely need to put your Windows DNS servers into debug mode to
> get any sort of query logging and the output isn't exactly pretty. You
> could also get the data by taking packet captures and/or using a tool
> such as dnssnarf, dnsdump or some other tool that another list member
> might recommend.
>
> >
> >>I'd normally not recommend running BIND on slower
> > multi-threaded Sun/Oracle >servers like the T-series, you'll normally be
> > better off with fewer threads but >higher clock speeds from typical
> > Intel/AMD systems.(caveat: I haven't bench->marked BIND 9.9.x, which
> > might have improved this).
> >
> > - Currently I have two:
> >      Dell PowerEdge 2950 servers with two Intel Xeon 3.0GHZ CPUs, and
> > 4GB RAM each running RHEL 5.8 OS
> >
> >
> > Thanks again,
> > SA
> >
> >
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