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PROFESSIONAL-CLOUD-NETWORK-ENGINEER · Question #200

Your multi-region VPC has had a long-standing HA VPN configured in "region 1" connected to your corporate network. You are planning to add two 10 Gbps Dedicated Interconnect connections and VLAN…

The correct answer is C. Enable global dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in. Global Dynamic Routing Mode: - Enables seamless routing across regions within the VPC, ensuring that the routes from both "region 1" (HA VPN) and "region 2" (Dedicated Interconnect) are propagated globally to all VPC - This is necessary to support the traffic flow between your…

Submitted by tyler.j· Apr 18, 2026Designing, planning, and prototyping a Google Cloud network

Question

Your multi-region VPC has had a long-standing HA VPN configured in "region 1" connected to your corporate network. You are planning to add two 10 Gbps Dedicated Interconnect connections and VLAN attachments in "region 2" to connect to the same corporate network. You need to plan for connectivity between your VPC and corporate network to ensure that traffic uses the Dedicated Interconnect connections as the primary path and the HA VPN as the secondary path. What should you do?

Options

  • AEnable regional dynamic routing mode on the VPC. Configure BGP associated with the HA VPN
  • BEnable regional dynamic routing mode on the VPC. Configure BGP associated with the HA VPN
  • CEnable global dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in
  • DEnable global dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in

How the community answered

(63 responses)
  • A
    10% (6)
  • B
    3% (2)
  • C
    81% (51)
  • D
    6% (4)

Explanation

Global Dynamic Routing Mode: - Enables seamless routing across regions within the VPC, ensuring that the routes from both "region 1" (HA VPN) and "region 2" (Dedicated Interconnect) are propagated globally to all VPC - This is necessary to support the traffic flow between your corporate network and the VPC across multiple regions. Priority for BGP Routes: - Lower BGP priority (base priority value) indicates a preferred path. - Assign priority 100 to the BGP sessions associated with the VLAN attachments in "region 2" (Dedicated Interconnect), making this the primary path for traffic. - Assign priority 20000 to the BGP sessions associated with the HA VPN in "region 1," ensuring that this acts as the secondary path. Multi-Exit Discriminator (MED): - Configuring similar MED values on your on-premises routers ensures that the routing preferences are consistent and honored when selecting between the Dedicated Interconnect and

Topics

#Dedicated Interconnect#HA VPN#Global dynamic routing mode#Route preference

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