[c-nsp] ip dns server load information

Brett Looney brett at looney.id.au
Wed Feb 18 01:49:58 EST 2009


> I'm interested in using a cisco router as a DNS server and I was
> wondering if anyone has real world experience or documentation that
> could inform me as to how many users/clients could one router handle
> if it were the primary dns server.

Don't do that for any reasonable number of users. In my experience it is
fine as a SOHO type DNS server (sub 20 users maybe) but under any load it
fails rapidly and unpredictably. If you are using it in a small environment,
make sure the upstream DNS servers are rock solid.

B.



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