Network Visibility Configuration Option for Subnets

C.

When creating a subnet within a bridge domain, the "scope" configuration option is used to specify the network visibility of the subnet.

The scope configuration option determines the reachability of the subnet, which is the range of IP addresses that can communicate with each other without needing to go through a routing process. The scope option can be set to either "public" or "private."

If the scope is set to "public," the subnet is visible to all other subnets within the ACI fabric. This means that any device within the fabric can communicate with any device on the public subnet.

If the scope is set to "private," the subnet is only visible to other subnets within the same bridge domain. This means that devices on other subnets within the fabric cannot communicate with devices on the private subnet unless they go through a routing process.

The other configuration options listed in the question are:

• "Limit IP learning to subnet" is an option that can be used to restrict the learning of IP addresses to a specific subnet. This can be useful for security purposes or to prevent IP address conflicts.
• "Gateway IP" is the IP address assigned to the default gateway for the subnet. This is the IP address that devices on the subnet use to communicate with devices on other networks.
• "Subnet control" is a feature that allows for the creation of multiple subnets within a single bridge domain. It can be used to provide more granular control over network traffic and to enforce security policies.