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Difficulty: MediumDesigning Network Architecture and Hybrid Connectivity

A media rendering company requires hybrid connectivity between its on-premises data center and a Google Cloud Virtual Private Cloud (VPC) network to stream large raw video files. The connection must support a sustained bandwidth requirement of 15 Gbps, deliver high availability with a 99.99% SLA, and prevent traffic from traversing the public internet. Which hybrid connectivity strategy should the Cloud Architect recommend?

  1. Provision Dedicated Interconnect with redundant links across two Google Cloud colocation facilities in two distinct metropolitan regions.Answer
  2. B
    Deploy an HA VPN gateway configured with five active-active IPSec VPN tunnels over the public internet to aggregate total bandwidth.
  3. C
    Configure VPC Network Peering between the on-premises router interface and a central hub VPC network that routes traffic to workload VPCs.
  4. D
    Establish a single 1 Gbps Partner Interconnect attachment and configure Cloud VPN over the attachment to dynamically burst traffic up to 15 Gbps.

Answer

Provision Dedicated Interconnect with redundant links across two Google Cloud colocation facilities in two distinct metropolitan regions.
Dedicated Interconnect provides direct physical connections between an on-premises network and Google Cloud without traversing the public internet. To achieve a 99.99% availability SLA for Dedicated Interconnect, an organization must deploy circuit connections in two separate metropolitan locations (metros) across four edge availability domains with dynamic BGP routing enabled via Cloud Router. This topology comfortably supports 15 Gbps bandwidth requirements using multiple 10 Gbps or 100 Gbps connections.

Step-by-Step Solution

1
Analyze bandwidth and security requirements
Sustained throughput is 15 Gbps and traffic must not traverse the public internet.
Cloud VPN operates over public internet with a 3 Gbps per tunnel cap, eliminating standard HA VPN as a viable choice for high-throughput private transport.
2
Evaluate high availability requirements
The requirement specifies a 99.99% uptime SLA.
Google Cloud requires Dedicated Interconnect circuits deployed in two separate edge availability domains across two distinct metros with Cloud Router BGP dynamic routing to achieve a 99.99% SLA.
3
Select the compliant hybrid connectivity model
Dedicated Interconnect redundant configuration provides 10 Gbps or 100 Gbps private circuits meeting both SLA and bandwidth thresholds.
Dedicated Interconnect meets all constraints: direct private physical connection, 15+ Gbps capacity, and 99.99% availability SLA.

Key Concept

Selecting GCP Hybrid Connectivity based on Bandwidth, Private Routing, and SLA Requirements
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Topics

Designing Network Architecture and Hybrid Connectivity