Set-AzVirtualNetwork

Set-AzVirtualNetwork
    -VirtualNetwork <PSVirtualNetwork>
    [-AsJob]
    [-DefaultProfile <IAzureContextContainer>]
    [-AcquirePolicyToken]
    [-ChangeReference <String>]
    [<CommonParameters>]

The Set-AzVirtualNetwork cmdlet updates a virtual network.

New-AzResourceGroup -Name TestResourceGroup -Location centralus ## Create resource group
$frontendSubnet = New-AzVirtualNetworkSubnetConfig -Name frontendSubnet -AddressPrefix "10.0.1.0/24" ## Create frontend subnet
$backendSubnet = New-AzVirtualNetworkSubnetConfig -Name backendSubnet -AddressPrefix "10.0.2.0/24" ## Create backend subnet

$virtualNetwork = New-AzVirtualNetwork -Name MyVirtualNetwork -ResourceGroupName TestResourceGroup `
    -Location centralus -AddressPrefix "10.0.0.0/16" -Subnet $frontendSubnet,$backendSubnet ## Create virtual network

Remove-AzVirtualNetworkSubnetConfig -Name backendSubnet -VirtualNetwork $virtualNetwork ## Remove subnet from in memory representation of virtual network

$virtualNetwork | Set-AzVirtualNetwork ## Remove subnet from virtual network

This example creates a virtual network called TestResourceGroup with two subnets: frontendSubnet and backendSubnet. Then it removes backendSubnet subnet from the in-memory representation of the virtual network. The Set-AzVirtualNetwork cmdlet is then used to write the modified virtual network state on the service side. When the Set-AzVirtualNetwork cmdlet is executed, the backendSubnet is removed.

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.