Enabling DNS Lookup On Cisco Router
In rare cases, a problem might arise and we have to use only our ISP’s DNS servers or public DNS server. The step-by-step instructions to configure the Cisco router for providing DNS service to your network are mentioned on this web page.
Step 1
- Use the following command lines to enable the DNS service and domain lookup on the Cisco router.
- R1# configure terminal
- R1(config)# ip dns server
- R1(config)# ip domain-lookup
Step 2
- To perform recursive DNS lookups, you have to set up the Cisco router with a public name-server.
- To do so, enter the command lines given here.
- R1(config)# ip name-server 4.2.2.5
- R1(config)# ip name-server 4.2.2.6
- You can provide up to a maximum of six different DNS name servers.
- First, use your ISP’s DNS server to check whether you have quick responses.
- If so, use public DNS servers to enable DNS lookup on Cisco router.
Step 3
- Enter the ‘R1(config)# ip host X M’ command line without including the single quotes.
- Note: Replace the X and M letters with the host name and its IP address, respectively.
- This will set up your DNS server with the specified host names of a local network.
Step 4
- Check if you receive an answer by entering the R1 ping X command line.
- If so, set the Cisco router’s IP address as the primary DNS server on your computer.
- To do this, proceed with the steps mentioned here.
- Navigate to the Control Panel screen on your Windows 10 computer and select the Network and Sharing Center option followed by the Change adapter settings option.
- Right-click your adapter and then select the Properties option.
- Open the Internet Protocol (TCP/IP) Properties dialog window and select the radio button beside the ‘Use the following IP address’ and ‘Use the following DNS server addresses’ options.
- Provide the required information and click OK to enable DNS lookup on Cisco router.