GCP, VPC, ON-Premise Network, BGP

Expand On-Premise Network with GCP

Experienced from: Network Engineer

The provided text discusses the process and benefits of setting up a Dedicated Interconnect between an on-premises network and Google Cloud Platform (GCP). Here's a summary of the key points:

  1. Cross Connect and BGP Session:
    • A cross connect is established between your own router and the Google Network in a shared colocation facility.
    • A BGP (Border Gateway Protocol) session is configured over the interconnect between the Cloud Router and your on-premises router, enabling routing between the two networks.
  2. Bidirectional Traffic and Connectivity:
    • The setup allows traffic to flow between your on-premises network and your Google Cloud Virtual Private Cloud (VPC).
    • Data can be transferred between the networks, and direct access to VPC's internal IP addresses is possible without the need for NAT or VPN.
  3. Benefits of Dedicated Interconnect:
    • Dedicated Interconnect provides an enterprise-grade, high-speed (10 Gbps) connection to your Google VPC.
    • It offers direct connectivity beyond Google's existing network locations, enabling scalability and reducing egress traffic costs.
    • Transferring large amounts of data between networks can be cost-effective compared to purchasing additional public internet bandwidth.
    • Fewer disruptions and drops are experienced, ensuring a predictable user experience with less potential for failures.
    • Traffic does not traverse the public internet, minimizing points of failure.
  4. Setting Up Dedicated Interconnect:
    • Decide between Dedicated Interconnect and Partner Interconnect based on speed and physical location requirements.
    • Dedicated Interconnect involves ordering a dedicated connection from your on-premises network to Google.
    • Google allocates the connection, provides confirmation, which are sent to the vendor for provisioning cross-connects.
    • Google performs thorough testing before allowing direct use of the interconnect.
    • Configuration and setup of a VLAN attachment are necessary.
  5. Redundancy Options:
    • Google offers two prescriptive configurations for different levels of availability: 99.99% and 99.9%.
    • The setup can be configured for mission-critical services or applications that require varying levels of uptime
Overall, the text emphasizes the advantages of Dedicated Interconnect for establishing a robust and high-speed connection between on-premises networks and GCP, enabling efficient data transfer, reduced costs, and enhanced reliability.