--> DNS Express is an Accelerated DNS feature of BIG IP GTM.
--> Enabling the DNS Express feature allows the BIG IP GTM to process millions of DNS requests for the authoritative domain.
--> When you configure DNS Express on the BIG IP GTM then the BIG IP GTM starts acting as Secondary DNS Server for the Authoritative Domain.
--> BIG IP GTM then requests the zone transfer to the Primary DNS Server for the Authoritative Domain.
--> We can do one thing is manually import the bind file from the Primary DNS Server to the Zone Runner of BIG IP GTM then perform a local zone transfer.
High-Level Configuration required for DNS Express:
1) Listener Configuration
2) Enable the DNS Profile with DNS Express on the Listener
3) Import the zone file from the Primary DNS Server into the zone runner
4) Perform DNS Zone Transfer by creating the zones in DNS Express
--> Now all the DNS requests are handled by DNS Express of BIG IP GTM.
Best Regards,
Md.Kareem
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