google cloud platform – Creating Routes Across GCP Projects

admin

I’m trying to configure hub-and-spoke architecture between different GCP projects .

hub project subnet: 10.105.224.0/24
spoke project subnet: 10.108.76.0/22

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I attempted to set the Internal Load Balancer (ILB) from the hub project as the next-hop for the spoke project. However,I couldn’t select it because it’s in a different project.I also try set IP address of an instance,but it shows error
“Invalid value for field ‘resource.nextHopIp’: ‘ilb-ip’. ilb-ip must lie within the address spaces of (10.108.76.0/22).”

I prefer not to use Shared VPC. How to configure routing in this scenario?

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