How to Subnet Quickly and Avoid the Headaches | Udemy Blog

[SOLVED] Double NAT Subnetting question - Networking Oct 12, 2019 Azure VPN Gateway: configuration settings | Microsoft Docs While you can create a gateway subnet as small as /29, we recommend that you create a gateway subnet of /27 or larger (/27, /26 etc.) if you have the available address space to do so. This will accommodate most configurations. The following Resource Manager PowerShell example shows a gateway subnet named GatewaySubnet.

Subnet Calculator - Cisco

as you can see we get the solution given by @Datagram.Network, but if choose instead to divide the first subnet and keep the second we can also have. 10.97.21.0/27 10.97.21.32/27 10.97.21.64/26 10.87.21.128/25 For more information you may find this answer to How do you calculate the prefix,

The first IP address in a subnet is used to define the subnet that an IP address is in. For example, the IP address that is 192.168.1.100 /24 is said to be in the subnet = 192.168.1.0 /24. That subnet definition cannot be assigned to a host machine. The last IP address in a subnet is used as a broadcast address

This subnet calculator can help you with the following tasks: Identify subnet parameters for a given IP address and subnet mask (or CIDR prefix). Display subnet parameters for a number of consecutive subnets of the specified length. Enter IP address value either in dot-decimal notation (e.g., 10.1.1.5) or in CIDR notation (e.g., 10.1.1.5/24).