AWS Tools for Windows PowerShell
Command Reference

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Synopsis

Invokes the CreateDhcpOptions operation against Amazon Elastic Compute Cloud.

Syntax

New-EC2DhcpOption
-DhcpConfiguration <DhcpConfiguration[]>
-Force <SwitchParameter>

Description

Creates a set of DHCP options for your VPC. After creating the set, you must associate it with the VPC, causing all existing and new instances that you launch in the VPC to use this set of DHCP options. The following are the individual DHCP options you can specify. For more information about the options, see RFC 2132.
  • domain-name-servers - The IP addresses of up to four domain name servers, or AmazonProvidedDNS. The default DHCP option set specifies AmazonProvidedDNS. If specifying more than one domain name server, specify the IP addresses in a single parameter, separated by commas. If you want your instance to receive a custom DNS hostname as specified in domain-name, you must set domain-name-servers to a custom DNS server.
  • domain-name - If you're using AmazonProvidedDNS in us-east-1, specify ec2.internal. If you're using AmazonProvidedDNS in another region, specify region.compute.internal (for example, ap-northeast-1.compute.internal). Otherwise, specify a domain name (for example, MyCompany.com). This value is used to complete unqualified DNS hostnames. Important: Some Linux operating systems accept multiple domain names separated by spaces. However, Windows and other Linux operating systems treat the value as a single domain, which results in unexpected behavior. If your DHCP options set is associated with a VPC that has instances with multiple operating systems, specify only one domain name.
  • ntp-servers - The IP addresses of up to four Network Time Protocol (NTP) servers.
  • netbios-name-servers - The IP addresses of up to four NetBIOS name servers.
  • netbios-node-type - The NetBIOS node type (1, 2, 4, or 8). We recommend that you specify 2 (broadcast and multicast are not currently supported). For more information about these node types, see RFC 2132.
Your VPC automatically starts out with a set of DHCP options that includes only a DNS server that we provide (AmazonProvidedDNS). If you create a set of options, and if your VPC has an Internet gateway, make sure to set the domain-name-servers option either to AmazonProvidedDNS or to a domain name server of your choice. For more information about DHCP options, see DHCP Options Sets in the Amazon Virtual Private Cloud User Guide.

Parameters

-DhcpConfiguration <DhcpConfiguration[]>
A DHCP configuration option.
Required?False
Position?1
Accept pipeline input?True (ByValue, )
-Force <SwitchParameter>
This parameter overrides confirmation prompts to force the cmdlet to continue its operation. This parameter should always be used with caution.
Required?False
Position?Named
Accept pipeline input?False

Common Credential and Region Parameters

-AccessKey <String>
The AWS access key for the user account. This can be a temporary access key if the corresponding session token is supplied to the -SessionToken parameter.
Required? False
Position? Named
Accept pipeline input? False
-Credential <AWSCredentials>
An AWSCredentials object instance containing access and secret key information, and optionally a token for session-based credentials.
Required? False
Position? Named
Accept pipeline input? False
-ProfileLocation <String>

Used to specify the name and location of the ini-format credential file (shared with the AWS CLI and other AWS SDKs)

If this optional parameter is omitted this cmdlet will search the encrypted credential file used by the AWS SDK for .NET and AWS Toolkit for Visual Studio first. If the profile is not found then the cmdlet will search in the ini-format credential file at the default location: (user's home directory)\.aws\credentials. Note that the encrypted credential file is not supported on all platforms. It will be skipped when searching for profiles on Windows Nano Server, Mac, and Linux platforms.

If this parameter is specified then this cmdlet will only search the ini-format credential file at the location given.

As the current folder can vary in a shell or during script execution it is advised that you use specify a fully qualified path instead of a relative path.

Required? False
Position? Named
Accept pipeline input? False
-ProfileName <String>
The user-defined name of an AWS credentials or SAML-based role profile containing credential information. The profile is expected to be found in the secure credential file shared with the AWS SDK for .NET and AWS Toolkit for Visual Studio. You can also specify the name of a profile stored in the .ini-format credential file used with the AWS CLI and other AWS SDKs.
Required? False
Position? Named
Accept pipeline input? False
-NetworkCredential <PSCredential>
Used with SAML-based authentication when ProfileName references a SAML role profile. Contains the network credentials to be supplied during authentication with the configured identity provider's endpoint. This parameter is not required if the user's default network identity can or should be used during authentication.
Required? False
Position? Named
Accept pipeline input? False
-SecretKey <String>
The AWS secret key for the user account. This can be a temporary secret key if the corresponding session token is supplied to the -SessionToken parameter.
Required? False
Position? Named
Accept pipeline input? False
-SessionToken <String>
The session token if the access and secret keys are temporary session-based credentials.
Required? False
Position? Named
Accept pipeline input? False
-Region <String>
The system name of the AWS region in which the operation should be invoked. For example, us-east-1, eu-west-1 etc.
Required? False
Position? Named
Accept pipeline input? False
-EndpointUrl <String>

The endpoint to make the call against.

Note: This parameter is primarily for internal AWS use and is not required/should not be specified for normal usage. The cmdlets normally determine which endpoint to call based on the region specified to the -Region parameter or set as default in the shell (via Set-DefaultAWSRegion). Only specify this parameter if you must direct the call to a specific custom endpoint.

Required? False
Position? Named
Accept pipeline input? False

Inputs

You can pipe a DhcpConfiguration[] object to this cmdlet for the DhcpConfiguration parameter.

Outputs

This cmdlet returns a DhcpOptions object. The service call response (type Amazon.EC2.Model.CreateDhcpOptionsResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack.

Examples

Example 1

PS C:\> $options = @( @{Key="domain-name";Values=@("abc.local")}, @{Key="domain-name-servers";Values=@("10.0.0.101","10.0.0.102")})
PS C:\> New-EC2DhcpOption -DhcpConfiguration $options

DhcpConfigurations DhcpOptionsId Tags
------------------ ------------- ----
{domain-name, domain-name-servers} dopt-1a2b3c4d {}
This example creates the specified set of DHCP options. The syntax used by this example requires PowerShell version 3 or later.

Example 2

PS C:\> $option1 = New-Object Amazon.EC2.Model.DhcpConfiguration
PS C:\> $option1.Key = "domain-name"
PS C:\> $option1.Values = "abc.local"

PS C:\> $option2 = New-Object Amazon.EC2.Model.DhcpConfiguration
PS C:\> $option2.Key = "domain-name-servers"
PS C:\> $option2.Values = @("10.0.0.101","10.0.0.102")

PS C:\> New-EC2DhcpOption -DhcpConfiguration @($option1, $option2)

DhcpConfigurations DhcpOptionsId Tags
------------------ ------------- ----
{domain-name, domain-name-servers} dopt-2a3b4c5d {}
With PowerShell version 2, you must use New-Object to create each DHCP option.

Supported Version

AWS Tools for PowerShell: 2.x.y.z