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If you need to retain connectivity within a subnet while migrating virtual
machine (VM) instances from an on-premises VMware source, consider using
hybrid subnets. For example, you can use hybrid
subnets during a multi-stage migration in which some VMs or IP addresses from an
on-premises subnet need to be reachable to VM instances that are already
migrated to Compute Engine.
A hybrid subnet combines an on-premises subnet and a Virtual Private Cloud (VPC)
subnet into a single logical subnet. You can migrate individual workloads and
instances from the on-premises subnet to the VPC subnet over time, without
needing to change IP addresses. After all the workloads and VMs have been
migrated, you can decommission the on-premises subnet.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Set up Hybrid Subnets for your migration\n\nIf you need to retain connectivity within a subnet while migrating virtual\nmachine (VM) instances from an on-premises VMware source, consider using\n[hybrid subnets](/vpc/docs/hybrid-subnets). For example, you can use hybrid\nsubnets during a multi-stage migration in which some VMs or IP addresses from an\non-premises subnet need to be reachable to VM instances that are already\nmigrated to Compute Engine.\n\nA hybrid subnet combines an on-premises subnet and a Virtual Private Cloud (VPC)\nsubnet into a single logical subnet. You can migrate individual workloads and\ninstances from the on-premises subnet to the VPC subnet over time, without\nneeding to change IP addresses. After all the workloads and VMs have been\nmigrated, you can decommission the on-premises subnet."]]
