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.