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New Member

DNS Problems on 2811 Series router

I am currently having trouble getting DNS to work thru my router. I can ping out thru the gateway\router, but cannot resolve hosts. I have enabled DNS on the router, added my ISP's DNS and my two internal DNS systems, but it still does not work. I have attached mu running config to this post. Any ideas?

2 REPLIES
New Member

Re: DNS Problems on 2811 Series router

Add the command "ip helper-address x.x.x.x" where the x's are your dns server IP address. This will allow all the dns/dhcp/etc. traffic across vlans/interfaces.

Hall of Fame Super Gold

Re: DNS Problems on 2811 Series router

Please configure "ip domain-lookup". Then try pinging name-server. If still no joy, check the access-list, that is pemritting only certain IPs for DNS.

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