An administrator is deploying an NC2 cluster on AWS in the us-west-2 region. A VPC, management subnet, and a VM subnet are already created in the target region.
The management subnet has a local route and a route to the internet. The subnet has a route and a route to the NAT gateway. During the deployment, the management subnet appears in the drop-down list in the Create Cluster wizard, but cannot be selected.
What is the cause of this problem?

Question

An administrator is deploying an NC2 cluster on AWS in the us-west-2 region. A VPC, management subnet, and a VM subnet are already created in the target region.

The management subnet has a local route and a route to the internet. The subnet has a route and a route to the NAT gateway. During the deployment, the management subnet appears in the drop-down list in the Create Cluster wizard, but cannot be selected.

What is the cause of this problem?

Rita Marques · Accepted Answer

The subnet has both an IPv4 CIDR block and an IPv6 CIDR block.

Rita Marques · Answer

The subnet has an IPv4 CIDR block but does not have an IPv6 CIDR block.

Rita Marques · Answer

The subnet has a direct route to an Internet gateway.

Rita Marques · Answer

The subnet does not have route to a Site-to-Site VPN connection through a virtual private gateway.

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