2.2. DNS Profile

The DNS profile unlocks all BIG-IP features by making the BIG-IP fully aware of DNS as a protocol.

Without a DNS profile applied to a listener, the TMOS does not parse DNS requests and load balance UDP/TCP packets.

Navigate to: DNS ›› Delivery : Profiles : DNS

Create a DNS profile as shown in the table below. Check boxes on the right to enable editing and overriding default properties.

Note: AVR sampling in production should be a ratio of queries so as not to overload local database.

Setting	Value
Name	example.com_dns_profile
DNS Cache	Enabled
DNS Cache Name	transparent_cache
Use BIND Server on Big-IP	Disabled
Logging	Enabled
Logging Profile	example_dns_logging_profile
AVR statistics Sample Rate	Enabled, 1/1 queries sampled

TMSH

tmsh create ltm profile dns example.com_dns_profile { avr-dnsstat-sample-rate 1 cache transparent_cache defaults-from dns enable-cache yes enable-logging yes log-profile example_dns_logging_profile use-local-bind no }