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mariusp2003
Beginner

How to setup DNS relay on 877 router

Please assist with typical ADSL configuration. My ISP only sends out DNS information automatically (PPP) - no static entries. I need to capture this information and relay it to users via DHCP. Currently when I do "ipconfig/ all" all DNS entries are empty.           

6 REPLIES 6
johnlloyd_13
Engager

hi,

do you have DHCP enabled on your 877? kindly post your config.

ip dhcp pool sdm-pool1

   network 10.10.10.0 255.255.255.248

   default-router 10.10.10.1

   import all

Hi,

Type via CLI:

ip dhcp pool sdm-pool1

dns-server ISP_DNS_IP_ADD

Let me know if you need to do it via SDM.

Sent from Cisco Technical Support iPhone App

OK, but that is my problem. "ISP_DNS_IP_ADD" is not known and according to my ISP they are not allowed to give this address out. They are stating that they reserve the right to keep their settings "Dynamic".

Is there no way the router can poll for this information and relay it back to the users?

Try using other public DNS servers: 8.8.8.8 or 4.2.2.2.

Sent from Cisco Technical Support iPhone App

OK - will give it a bash tonight. Thanks for assisting.