Build Dedicated or Partner Interconnect configurations with VLAN attachments, BGP sessions, and bandwidth settings.
Last verified: May 2026
Build Dedicated or Partner Interconnect configurations with VLAN attachments, BGP sessions, and bandwidth settings.
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nameinterconnectTypelinkTyperequestedLinkCountlocationattachmentsOutput will appear here...The builder constructs Cloud Interconnect configurations: Interconnect resource (Dedicated 10/100 Gbps or Partner reference), VLAN attachments per circuit (with VLAN ID, BGP peer ASN, MTU, region/zone selection), Cloud Router resource (with BGP session config), and the topology pattern (4 attachments across 2 metros for 99.99% SLA, 2 attachments same metro for 99.9% SLA). Output is generated as gcloud compute interconnects + gcloud compute routers commands and Terraform google_compute_interconnect_attachment + google_compute_router resources.
Cloud Interconnect provides dedicated or partner connections between your on-premises network and Google Cloud VPCs, offering lower latency, higher bandwidth, and more consistent throughput than VPN tunnels. Dedicated Interconnect provides 10 Gbps or 100 Gbps physical connections at Google peering facilities, while Partner Interconnect uses a service provider to reach Google's network at bandwidths from 50 Mbps to 50 Gbps. This builder helps you configure VLAN attachments, BGP sessions, router configurations, and redundancy settings for production-grade hybrid connectivity.
Your team is connecting an on-prem datacenter to GCP for a 5 Gbps hybrid workload. The builder helps you plan: 4 Partner Interconnect attachments at 5 Gbps total, 2 from Equinix Ashburn, 2 from Equinix Atlanta, terminating at Cloud Routers in us-east1 and us-east4. BGP with BFD for sub-second failover. Total monthly cost: ~$2,800 for the attachments (vs $6,000 for Dedicated 10 Gbps in two metros). 99.99% SLA achieved at less than half the Dedicated cost.
The 99.99% SLA requires 4 attachments across 2 metro areas — anything less is best-effort. For critical hybrid workloads, the cost difference between '2 connections in one metro' (99.9% SLA) and '4 connections across 2 metros' (99.99% SLA) is roughly 2x the connection cost — but the difference between 8.7 hours/year and 52 minutes/year of expected downtime is enormous.
Partner Interconnect at 50 Mbps - 50 Gbps is dramatically cheaper than Dedicated for sub-10-Gbps workloads. Most enterprise hybrid scenarios fit comfortably in Partner Interconnect's range. Reserve Dedicated Interconnect for genuinely high-bandwidth scenarios (data lake migration, large media transfer pipelines).
BFD (Bidirectional Forwarding Detection) on BGP sessions reduces failover detection from BGP's 30-90 second timer to sub-second. Enable BFD on every Cloud Router BGP session for production workloads — the configuration is trivial and the failover speedup is massive.
Dedicated Interconnect is a direct physical connection between your on-premises router and Google's network at a colocation facility, available in 10 Gbps or 100 Gbps circuits. Partner Interconnect uses a supported service provider as an intermediary, available from 50 Mbps to 50 Gbps. Choose Dedicated when your data center is near a Google peering facility and you need high bandwidth; choose Partner when you need lower bandwidth or your facility is not near a Google location.
Google's 99.99% availability SLA requires a minimum of four VLAN attachments across two Dedicated Interconnect connections in two different metropolitan areas (edge availability domains). Each metro area needs at least two connections in separate edge availability domains. The builder helps you configure this topology correctly with redundant Cloud Routers and proper BGP session configuration.
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