A listener is a specialized virtual server that passively checks for DNS packets on port 53 and the IP address you assign to the listener. When a DNS query is sent to the IP address of the listener, BIG-IP DNS either handles the request locally or forwards the request to the appropriate resource.

1. On the Main tab, click the applicable path.
   • DNS > Delivery > Load Balancing > Pools
   • Local Traffic > Pools
   The Pool List screen opens.
2. Click Create.
   The New Pool screen opens.
3. In the Name field, type a unique name for the pool.
4. For the Health Monitors setting, from the Available list, select the custom DNS monitor you created and move the monitor to the Active list.
5. Using the New Members setting, add each resource that you want to include in the pool:
   1. (Optional) In the Node Name field, type a name for the node portion of the pool member.
   2. In the Address field, type an IP address.
   3. In the Service Port field, type a port number, or select a service name from the list.
   4. (Optional) In the Priority field, type a priority number.
   5. Click Add.
6. Click Finished.

1. On the Main tab, click DNS > Delivery > Listeners .
   The Listeners List screen opens.
2. Click Create.
   The Listeners properties screen opens.
3. In the Name field, type a unique name for the listener.
4. For the Destination setting, in the Address field, type an IPv4 address on which BIG-IP DNS listens for network traffic.
5. From the Listener list, select Advanced.
6. For the Address Translation setting, select the Enabled check box.
7. In the Service area, from the Protocol list, select UDP.
8. From the Default Pool list, select the pool to which this listener forwards DNS queries.
9. Click Finished.