Subnetting blog

subnettingCidrSubnet.bicep

@description('The preferred IP address space for the virtual network. Add the CIDR. Default: 192.168.1.0/24')
param parAddressSpace string = '192.168.1.0/24'

@description('The preferred CIDR for the subnet. Default: 25')
param parSubnetCidr int = 25

@description('The amount of subnets to create. Default: 2')
param parAmountOfSubnets int = 2

var varSubnetCalculations = map(range(0, parAmountOfSubnets), i => {
  name: 'subnet-${i}'
  properties: {
    addressPrefix: cidrSubnet(parAddressSpace, parSubnetCidr, i)
  }
})

resource resVirtualNetwork 'microsoft.network/virtualNetworks@2019-11-01' = {
  name: 'my-vnet2'
  location: 'westeurope'
  properties: {
    addressSpace: {
      addressPrefixes: [
        parAddressSpace
      ]
    }
    subnets: varSubnetCalculations
  }
}