This page provides instructions for checking to see if a private services access connection is set up for your network. Establishing a private services access connection for a network is a prerequisite for creating a Redis instance with the private services access connection mode designated for that network. For more details, see Networking.
Console
- Go to the VPC Networks page in the Google Cloud console. 
 VPC Networks
- Click the name of the VPC network that you want to verify. 
- Click the Private service connection tab. 
- Click the Private connections to services tab. - If you see a connection listed called - servicenetworking-googleapis-com, then a connection has been established for this network.- If the connection has not been established, follow the instructions at Establishing a private services access connection. 
gcloud
Verify if private services access is already set up for your project by running the following command, replacing the highlighted-variables with the appropriate values:
gcloud services vpc-peerings list --network=network --project=project-id
To select your default network use --network=default.
If a connection is enabled, the command returns the text below with the
   [bracketed-values] replaced by your project's values. If a
   connection is not enabled for private services access, the previous
   command returns nothing.
network: projects/[project-number]/global/networks/[network] peering: servicenetworking-googleapis-com reservedPeeringRanges: [Range description]
If the connection has not been established, follow the instructions at Establishing a private services access connection.