Read the article to know what is an IP subnet. With our Server Management Services, Bobcares offers solutions to your server concerns.

What Is An IP Subnet?

A Virtual Private Network consists of a range of IP addresses known as subnets. Single-stack and dual-stack are the two types of networks available in VPC. A VPC can contain any of these types or a combination of both. The purpose of the subnets may vary. The PRIVATE subnets are for VM instances. The PRIVATE_SERVICE_CONNECT is for publishing a managed service by using Private Service Connect. And REGIONAL_MANAGED_PROXY subnet is for regional Envoy-based load balancers.

IPv4 IP Ranges

There is a primary IPv4 address range for each subnet. VM instances, internal load balancers, and internal protocol forwarding all have their primary internal addresses derived from the subnet’s primary range. Secondary IP address ranges are an optional addition to a subnet. Nevertheless, we can set up alias IP ranges for instances from a subnet’s primary or secondary range.

Google public IP addresses and frequently used RFC ranges are examples of prohibited subnet ranges. Subnet ranges cannot be from these ranges. Additional information on Google’s public IP address ranges is available from Google Support. Different GCP Support plans are available suiting our needs. Some of the features of IPv4 IP address are as follows:

1. They can’t be the same, narrower, or broader than a particular range.
2. An RFC range and a privately used public IP address range cannot be in the same subnet range.
3. No multiple RFC ranges inside an IPv4 Subnet range.

IPv6 IP Ranges

We can select the IPv6 access type for the subnet by enabling the IPv6 on a subnet in a VPC network. Setting subnet with internal IPv6 addresses or external IPv6 addresses is possible. Within VPC networks, VM-to-VM communication uses internal IPv6 addresses. However, forwarding to the internet is not possible. Routing within the boundaries of VPC networks is possible. Within VPC networks, external IPv6 addresses are available for VM-to-VM communication and are also routable over the internet.

Some of the features of IPv6 address are as follows:

1. They are regional resources.
2. Subnet ranges for IPv6 are local resources.
3. All regions offer both internal and external IPv6 subnet ranges.
4. /64 ranges are automatically assigned to IPv6 subnet ranges.
5. A subnet’s IPv6 access type (internal or external) cannot be changed.

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Conclusion

To conclude, we’ve provided the details of IP subnets such as IPv4 and IPv6. We also included the basic features we should keep in mind while using the IP addresses.