Filebeats (Beats) and Logstash Best Practices Deployment Architecture

Hi Elastics Forum,

I am trying to Forward Network Device logs in CEF via syslog into 2 different logstash for HA (High Availabilty) and load balancing. I have check that It can use Filebeats with logstash ouput and loadbalancing true. I want to ask what is the Best Practices for deploying using the Filebeat as a loadbalance and logstash to process the logs.

Thank you