How we can use GTM as a DNS Server, while using all the benifits for GTM.
as customer doesn't have multiple Datacenters are DR sites , but they have BigIP Module and want to use as DNS , so what would be the tabs to configure in GSLB
You can use DNS module to do DNS cache or DNSExpress or simply replace the local DNS server.
Take a look on theses links below, they propose several use cases :
Replacing a DNS Server with F5 BIG-IP DNS
Configuring the F5 BIG-IP to Perform Name Resolution Using a DNS Resolver Cache
DNS Express and Zone Transfers