Establishing network connectivity between two or more cloud networks (VPC Stitching)

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Updated at September 18, 2026

Warning

This function is only available if Cloud Interconnect is activated with a traffic volume of at least 300 TB.

The network topology is presented on the diagram in the following configuration:

From the Yandex Cloud side, the virtual router is connected to by virtual network Net-1 comprised of six subnets: subnet-a1, subnet-a2, subnet-b1, subnet-b2, subnet-d1, and subnet-d2. The information on the IP prefixes of the subnets is added to the virtual router.
From the Yandex Cloud side, the virtual router is connected to by virtual network Net-2 comprised of six subnets: subnet-a3, subnet-a4, subnet-b3, subnet-b4, subnet-d3, and subnet-d4. The information on the IP prefixes of the subnets is added to the virtual router.
For network connectivity between virtual networks Net-1 and Net-2, a special private connection named vpc-stitching is created in the virtual router. This private connection terminates on Yandex Cloud network equipment.
To achieve network connectivity between virtual networks Net-1 and Net-2 for the vpc-stitching private connection, you need to configure stitching announcements for the CIDRs of the corresponding subnets in virtual networks Net-1 and Net-2.

Important note

Virtual network subnets' own prefixes cannot be used as stitching announcements.