Related to recommendation as per following link
https://docs.splunk.com/Documentation/Splunk/8.1.0/Forwarding/Setuploadbalancingd
External network load balancer will not work with UF/HF if DNS resolves only one IP-address for NLB. This limitation will be addressed in future releases.
Technically external network load balancer should work with UF/HF as long as DNS returns 2 or more IP addresses.. So why not recommended?
There are some scenarios where results will not be as expected.
With fewer number of A records for NLB, forwarder might stick to only one indexer.
External network load balancer will not work with UF/HF if DNS resolves only one IP-address for NLB. This limitation will be addressed in future releases.
Technically external network load balancer should work with UF/HF as long as DNS returns 2 or more IP addresses.. So why not recommended?
There are some scenarios where results will not be as expected.
With fewer number of A records for NLB, forwarder might stick to only one indexer.