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A company is migrating its on-premises data center to Google Cloud. They have several legacy applications that rely on specific IP addresses and network configurations that cannot be easily changed. They need to establish a secure, high-bandwidth connection between their on-premises network and Google Cloud, ensuring their existing IP addressing scheme can be extended into the cloud. Which Google Cloud networking solution should they use?
- AVPC Peering
- BCloud Interconnect (Dedicated Interconnect)
- CShared VPC
- DCloud VPN (HA VPN)
Show answer & explanationAnswer & explanation
Correct answer: B. Cloud Interconnect (Dedicated Interconnect)
Dedicated Interconnect provides a direct, private physical connection with high bandwidth and low latency, allowing the extension of on-premises IP addressing schemes into Google Cloud via BGP. This meets the requirements for secure, high-bandwidth connectivity and existing IP configuration preservation.
Why the other options are wrong
- A. VPC Peering connects two VPC networks within Google Cloud, which is not applicable for hybrid connectivity to an on-premises environment.
- C. Shared VPC allows multiple projects to share a common VPC network, but it's a within-GCP networking construct and doesn't directly address hybrid connectivity to an on-premises data center.
- D. Cloud VPN offers secure connectivity over the public internet, but generally provides lower bandwidth and higher latency compared to Interconnect, and might not seamlessly extend complex on-premises IP schemes without NAT.
Dedicated Interconnect
A direct, physical connection between an on-premises network and Google's network, offering high bandwidth and low latency.
- Provides private connectivity, bypassing the public internet.
- Supports BGP for routing, allowing IP address extension.
- Offers connection speeds up to 100 Gbps.
Memory trick: Connect your on-premise home to the cloud, securely and swiftly.