Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

DNS forwarding issue on 2821 ISR

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.

Everyone's tags (3)
3 REPLIES
Hall of Fame Super Gold

Re: DNS forwarding issue on 2821 ISR

Likely a bug, update IOS.

New Member

Re: DNS forwarding issue on 2821 ISR

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

New Member

Re: DNS forwarding issue on 2821 ISR

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

727
Views
0
Helpful
3
Replies