Networks should not be in legacy mode

Description

A legacy network is global, has a single gateway IP address and network IPv4 prefix range, and doesn’t support the creation of subnetworks. As a result, legacy networks do not easily support redundancy and are subject to a single point of failure.

Remediation Steps

Google Cloud Console

  • Navigate to VPC networks.

  • Click the legacy network.

  • Click DELETE VPC NETWORK.

  • If needed, create a new network to replace the legacy network.

  • Repeat for each legacy network.

gcloud CLI

  • To delete a legacy network:

    • gcloud compute networks delete LEGACY_NETWORK_NAME

  • If needed, create a new network to replace it:

    • gcloud compute networks create NETWORK_NAME