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Zorluk: OrtaDesigning Network Architecture and Hybrid Connectivity

A global clinical diagnostics enterprise is designing a hybrid cloud architecture to transfer massive genomic sequencing datasets from its primary on-premises data center to Google Cloud for high-performance processing. The architecture requires a private, non-public network connection capable of supporting sustained transfer bandwidth exceeding 12 Gbps while guaranteeing a 99.99% availability Service Level Agreement (SLA). Which TWO architectural decisions must be implemented to satisfy these requirements?

  1. Provision Dedicated Interconnect circuits terminating in two distinct Google Cloud edge availability domains across separate metropolitan facilities.Cevap
  2. Deploy Cloud Routers in the VPC network to establish dynamic BGP sessions across all interconnect attachments for automated routing failover.Cevap
  3. C
    Deploy an High Availability (HA) VPN gateway with multiple active IPsec tunnels using equal-cost multi-path (ECMP) routing to aggregate bandwidth above 10 Gbps.
  4. D
    Use VPC Network Peering to transitively extend on-premises BGP routes from a central hub VPC to multiple spoke workload VPCs without deploying additional Cloud Routers.

Cevap

To meet the sustained >12 Gbps bandwidth and 99.99% SLA requirements, the architecture must provision Dedicated Interconnect circuits across two distinct metropolitan edge availability domains and deploy Cloud Routers with BGP for dynamic routing failover.
To achieve sustained throughput exceeding 12 Gbps while securing a 99.99% uptime SLA, the solution must utilize Dedicated Interconnect with at least 10 Gbps links distributed across two separate metropolitan edge availability domains. Additionally, Cloud Routers are required to establish BGP sessions to dynamically exchange routes and enable instant failover across the redundant interconnect paths.

Adım Adım Çözüm

1
Analyze bandwidth and connectivity medium requirements.
Sustained throughput exceeds 12 Gbps, which rules out Cloud VPN (capped at 3 Gbps per tunnel). Dedicated Interconnect (using 10 Gbps or 100 Gbps physical links) is required.
Dedicated Interconnect provides direct physical connections for high-bandwidth, private hybrid cloud traffic.
2
Determine high availability topology for 99.99% SLA.
Google Cloud requires 4 Dedicated Interconnect attachments across 2 distinct edge availability domains (metropolitan areas) combined with redundant Cloud Routers.
A 99.99% SLA for Dedicated Interconnect demands dual-metro redundancy so that no single facility outage impacts connectivity.
3
Evaluate routing mechanism and VPC Peering transitivity.
Cloud Router with BGP must be configured. VPC Network Peering cannot be used for transitive routing from on-premises to spoke VPCs.
Cloud Router provides dynamic BGP route propagation, whereas VPC Peering does not propagate on-premises routes transitively.

Anahtar Kavram

99.99% High Availability Hybrid Topology using Dedicated Interconnect and Cloud Router
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Designing Network Architecture and Hybrid Connectivity