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 DNS > Zones > ZoneRunner > Zone List .
   The Zone List screen opens.
2. Click Create.
   The New Zone screen opens.
3. From the View Name list, select the view that you want this zone to be a member of.
   The default view is external.
4. In the Zone Name field, type a name for the zone file in this format, including the trailing dot: db.[viewname].[zonename].
   For example, db.external.siterequest.com.
5. From the Zone Type list, select Master.
6. From the Records Creation Method list, select Transfer from Server.
7. In the Records Creation area, type the values for the SOA and NS record parameters.
8. Click Finished.

1. On the Main tab, click Network > Self IPs .
2. Click Create.
   The New Self IP screen opens.
3. In the Name field, type a unique name for the self IP address.
4. In the IP Address field, type the IP address of the legacy DNS server.
   The system accepts IPv4 and IPv6 addresses.
5. In the Netmask field, type the network mask for the specified IP address.

   For example, you can type 255.255.255.0.

6. Click Finished.
   The screen refreshes, and displays the new self IP address.

1. On the Main tab, click DNS > GSLB > Servers .
   The Server List screen opens.
2. Click the name of the BIG-IP DNS system that you want to modify.
   The server settings and values display.
3. In the Address List area, add the new self IP address.
4. Click Update.
5. Do one of the following based on your network configuration:
   • Modify the IP address of the legacy DNS server so that it becomes a secondary DNS server to BIG-IP DNS. Ensure that the IP address of the DNS server does not conflict with the self IP address that you added to the BIG-IP DNS server object.
     Note: If you are using BIND servers, and you are unfamiliar with how to change a DNS server from a primary to a secondary, refer to the fifth edition of DNS and BIND, available from O’Reilly Media.
   • Remove the legacy DNS server from your network.

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 the IP address previously used by the legacy DNS server.
5. From the VLAN Traffic list, select All VLANs.
6. In the Service area, from the Protocol list, select UDP.
7. Click Finished.

1. On the Main tab, click DNS > GSLB > Wide IPs .
   The Wide IP List screen opens.
2. Click Create.
   The New Wide IP List screen opens.
3. In the General Properties area, in the Name field, type a name for the wide IP.
   Tip: You can use two different wildcard characters in the wide IP name: asterisk (*) to represent several characters and question mark (?) to represent a single character. This reduces the number of aliases you have to add to the configuration.
4. From the Type list, select a record type for the wide IP.
5. In the Pools area, for the Pool List setting, select the pools that this wide IP uses for load balancing.
   The system evaluates the pools based on the wide IP load balancing method configured.
   1. From the Pool list, select a pool.
      A pool can belong to more than one wide IP.
   2. Click Add.
6. Click Finished.