Communication between two private networks in Google Cloud networking

Question

I have two networks Pvt-net1 and Pvt-net2 as custom subnet networks in Google cloud networking. Each of network is having one subnet.

Pvt-net1 is having subnet pvt-net1subnet1 192.168.1.0/16 in region us-central1. Pvt-net2 is having subnet pvt-net2subnet1 192.168.2.0/16 in region us-central1.

I don't want to have both subnets under same network. I am trying to map Openstack networking to Google Cloud networking.

How can form communication between Pvt-net1 and Pvt-net2 with private IP's? Can I use routes and firewalls here? What could be better way to setup routing between to different networks in same Google project?

Edit: I am working on Openstack project which maps Openstack network resources to Google Cloud networking Resources. I am mapping Openstack network, subnet to Google cloud network, subnet. Now as we create route between networks in Openstack, I want to map same action to GCE.

Answer 1

1) You have not elaborated on your use case, but maybe you can create one network with 2 [sub-networks] (https://cloud.google.com/compute/docs/subnetworks).

2) If you need 2 separate networks, you can use network peering or create two Cloud VPN (one per network),which are connected to each other.

Answer 2

VPC networks can be connected to other VPC networks in different projects or organizations by using VPC Network Peering.