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DNS forwarding issue on 2821 ISR

Safar Safarov
Level 1
Level 1

‎04-04-2010 11:20 PM - edited ‎03-04-2019 08:01 AM

Hello,

I have configured DNS forwarding on my Cisco 2821 to ISP DNS servers and configured router as a DNS Server for all of desktops/laptops I use. Everything work correct but only for 48 hours (approximately), then I cannot access/ping several websites (note that only couple not all) until DNS cache of the router is cleared. After issuing clear host all * everything is ok for next 48 hours...

Is there any way do fix that?

Thanks.

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3 Replies 3

paolo bevilacqua
Hall of Fame
Hall of Fame

‎04-05-2010 12:57 PM

Likely a bug, update IOS.

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Safar Safarov
Level 1
Level 1
In response to paolo bevilacqua

‎04-08-2010 12:59 AM

Updated, the same issue occur... any ideas?

0 Helpful

Safar Safarov
Level 1
Level 1

‎04-15-2010 05:56 AM

Is there any way to configure clearing dns cache automatically? Maybe I missed smth in config?

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