The F5 BIG-IP load balancer is not bundled with Google Distributed Cloud, so you must get a licence and set up the load balancer separately from installing Google Distributed Cloud.
You can configure Google Distributed Cloud to be integrated with F5 BIG-IP in the
following sense: When a developer creates a Service of type LoadBalancer and
specifies a VIP for the service, Google Distributed Cloud will automatically
configure the VIP on the load balancer.
You can also use F5 BIG-IP as a manually configured load balancer. In this case,
Google Distributed Cloud does not automatically configure Service VIPs.