Manually clear the DNS cache of LTM or BIG-IP DNS Servers.
DNS deployment to managed DNS/DHCP Servers in your F5 pool will automatically clear the DNS cache on LTM and BIG-IP DNS Servers. However, if you need to clear the DNS cache manually, you can do so from the F5 Service Configuration page of the Address Manager user interface.
To manually clear the DNS cache of an LTM or BIG-IP DNS Server:
Address Manager clears the DNS cache of the selected LTM or BIG-IP DNS Server.