IBM::EC2::Subnet

This resource type represents a subnet on Amazon Elastic Compute Cloud. It extends the type OS::Neutron::Subnet.

The blueprint uses the core properties and extended properties, if any, from this resource type. Review and configure the applicable heat resources that apply to your configuration information.

In the blueprint designer, you can configure the properties that the following table includes. Properties are listed as either core or extended. Each type of property is located in separate sections of the heat resource that you can view in the blueprint designer. You set the core properties in the properties section and set the extended properties in the metadata section of the blueprint.

Table 1. Properties
Name	Type	Required	Core or extended	Description
allocation_pools	List	False	Core	The start and end addresses for the allocation pools. See Table 2.
auto_assign_public_ip	Boolean	False	Extended	Enable the subnet to automatically assign a public IP address.
availability_zone	String	True	Extended	The availability zone of the subnet.
cidr	String	True	Core	CIDR subnet mask.
dns_nameservers	List	False	Core	A list of DNS servers to use on the subnet.
enable_dhcp	Boolean	False	Core	True if DHCP is enabled and false if DHCP is disabled.
gateway_ip	String	False	Core	Gateway IP address.
host_routes	List	False	Core	Additional routes to add to the subnet. See Table 3.
ip_version	Integer	False	Core	The IP version. Allowable values are `4` and `6`. By default, the ip_version parameter is set to `4`.
name	String	False	Core	Name of the subnet.
network_id	String	True	Core	ID of the attached network.
tenant_id	String	False	Core	ID of the tenant that owns the network. Only administrative users can specify a tenant ID other than their own.
value_specs	Map	False	Core	Additional parameters to include in the creation request.

The allocation_pools parameter requires the start and end addresses for the allocation pool. The following table shows the properties in each list item.

Table 2. allocation_pools list properties
Property	Type	Required	Description
end	String	True	End address for an allocation pool.
start	String	True	Start address for an allocation pool.

The host_routes parameter requires a list of routes. The following table shows the properties in each list item.

Table 3. host_routes list properties
Property	Type	Required	Description
destination	String	True	CIDR subnet mask.
nexthop	String	True	IP address of the next hop to the route to add.

This resource type has no attributes.