An organization is planning to migrate several core workloads from an on-premises data center to Google Cloud. The on-premises network uses the private IP range , and the cloud environment will connect to on-premises via a Cloud VPN gateway. The cloud network team needs to design a multi-region Google Cloud network strategy that prevents IP routing conflicts and allows flexible future subnet growth. Which TWO subnet design practices should the network team enforce during the planning stage?
- Create a custom mode VPC network rather than relying on an auto mode VPC network.Answer
- BUse the default auto mode VPC network to automatically provision subnets across all Google Cloud regions.
- Allocate custom primary CIDR ranges for each region that do not overlap with the on-premises network or with other subnets in the VPC.Answer
- DProvision overlapping primary CIDR ranges across different regions and rely on internal DNS to resolve routing conflicts across the Cloud VPN tunnel.
Answer
The networking team must create a custom mode VPC network and allocate custom primary CIDR ranges for each region that do not overlap with the on-premises network or other cloud subnets.
Selecting a custom mode VPC allows network engineers to manually assign non-overlapping IP address ranges, avoiding the predefined IP blocks assigned by auto mode. Furthermore, ensuring that primary subnet CIDR blocks in all regions are disjoint from the on-premises network ensures packet routing across Cloud VPN functions correctly without IP collisions.
Step-by-Step Solution
Key Concept
VPC Network Planning and Subnet IP Addressing in Hybrid Environments
Estimated Time:1m 30s