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Question

Difficulty: MediumDesigning Network Architecture and Hybrid Connectivity

A telecommunications enterprise is designing a hybrid network topology to connect its on-premises data centers and remote operational facilities to Google Cloud. Match each GCP hybrid connectivity technology on the left to its corresponding architectural scenario requirement on the right.

  • Dedicated InterconnectDirect physical circuit between on-premises network and Google network meeting 10 Gbps or 100 Gbps bandwidth requirements with high availability.
  • Partner InterconnectSub-10 Gbps private SLA-backed connectivity through a supported service provider when colocation at a Google edge location is unavailable.
  • HA VPNIPsec encrypted tunnels over the public internet providing 99.99% service availability with dynamic topology routing up to 3 Gbps bandwidth.
  • Cloud RouterDynamic BGP route exchange between Google Cloud VPC networks and the on-premises router infrastructure.

Answer

Dedicated Interconnect matches direct physical circuits (10/100 Gbps). Partner Interconnect matches service-provider backed connectivity under 10 Gbps. HA VPN matches encrypted IPsec tunnels over the public internet with 99.99% availability. Cloud Router matches dynamic BGP route exchange.
Each technology is paired correctly based on key Google Cloud network architecture specifications: Dedicated Interconnect provides 10/100 Gbps direct connections; Partner Interconnect offers provider-assisted sub-10 Gbps links; HA VPN provides encrypted 99.99% SLA IPsec tunnels over the public internet; and Cloud Router handles dynamic BGP route exchanges.

Step-by-Step Solution

1
Analyze high-bandwidth direct physical requirements
Dedicated Interconnect is required for direct 10 Gbps or 100 Gbps physical circuits without third-party service provider mediation.
Dedicated Interconnect directly links your enterprise network to a Google Colocation facility.
2
Analyze service provider hybrid connectivity needs below 10 Gbps
Partner Interconnect maps to sub-10 Gbps connectivity provided via supported service providers.
Partner Interconnect extends connectivity to locations where dedicated Google points of presence are unavailable or bandwidth needs are smaller.
3
Identify secure encrypted transport options over public internet
HA VPN matches IPsec encrypted transport delivering up to 3 Gbps per gateway with 99.99% SLA.
HA VPN provides high-availability IPsec tunnels using BGP dynamic routing without requiring private circuit installation.
4
Determine dynamic routing component
Cloud Router provides dynamic routing using Border Gateway Protocol (BGP).
Cloud Router manages dynamic route exchange between GCP VPCs and on-premises networks across Interconnects or VPNs.

Key Concept

Selecting and combining Google Cloud hybrid connectivity options (Dedicated Interconnect, Partner Interconnect, HA VPN, and Cloud Router) based on enterprise bandwidth, encryption, SLA, and routing requirements.
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Topics

Designing Network Architecture and Hybrid Connectivity