# LaunchTemplateInstanceSecondaryInterfaceSpecification


Describes a secondary interface specification in a launch template.

## Contents


 ** deleteOnTermination **   
Indicates whether the secondary interface is deleted when the instance is terminated.  
The only supported value for this field is `true`.  
Type: Boolean  
Required: No

 ** deviceIndex **   
The device index for the secondary interface attachment.  
Type: Integer  
Required: No

 ** interfaceType **   
The type of secondary interface.  
Type: String  
Valid Values: `secondary`   
Required: No

 ** networkCardIndex **   
The index of the network card.  
Type: Integer  
Required: No

 ** privateIpAddressCount **   
The number of private IPv4 addresses to assign to the secondary interface.  
If you specify `privateIpAddressCount` you cannot specify `privateIpAddresses`   
Type: Integer  
Required: No

 ** PrivateIpAddressesSet.N **   
The private IPv4 addresses to assign to the secondary interface.  
If you specify `privateIpAddresses` you cannot specify `privateIpAddressCount`   
Type: Array of [SecondaryInterfacePrivateIpAddressSpecification](API_SecondaryInterfacePrivateIpAddressSpecification.md) objects  
Required: No

 ** secondarySubnetId **   
The ID of the secondary subnet.  
Type: String  
Required: No

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/LaunchTemplateInstanceSecondaryInterfaceSpecification) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/LaunchTemplateInstanceSecondaryInterfaceSpecification) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/LaunchTemplateInstanceSecondaryInterfaceSpecification)