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When you first enable Cloud Network Automation, NIOS installs a set of extensible attributes that are specific for cloud usage. Use these cloud extensible attributes to tag objects that belong to the CMP. Note the following when defining cloud extensible attributes through Grid Manager:

  • You cannot assign cloud extensible attributes to other NIOS objects, yet you can create smart folders using these cloud attributes or modify their definitions.
  • You can define and update cloud extensible attributes on the Grid Master, through cloud API requests or Grid Manager, as long as the authority for the corresponding cloud objects are not delegated.

To identify a cloud object, you must reference some of these cloud attributes when you create, modify, or delete a specific object. For more information about which extensible attributes are required for cloud API requests, see Supported Cloud API Objects.
Table 7.10 lists the default cloud extensible attributes come installed on the appliance. Note that some of the attributes are read-only and you cannot modify their properties. These attributes are applicable for specific object types or for identification purposes. See Comments for more information about each attribute.

Note: All cloud extensible attributes are displayed in the Administration tab -> Extensible Attributes tab in Grid Manager.

Table 7.10 Extensible Attributes for Cloud Usage

Attribute Name

Attribute Type




The CMP user account for creating networks.

Allocation ID


The allocation ID of the Elastic IP. Limited to Elastic IP only. Example: eipalloc-5723d13e.

Application Type


Indicates the application type, such as Web, DB, or CRM.

Association IDStringAssociation ID specific to Elastic IP only.
Attachment IDStringThe attachment ID of the network interface. This is valid for Elastic IP only and present when Network
Interface is attached to an instance. Example: eni-attach-d94b09b0.
Availability ZoneString
Cloud API OwnedList [True, False]This is read-only. Defines whether an object was created by the cloud adapter.
Cloud RegionStringA region name for an VPC object. Example: us-west-1.
CMP TypeStringThis is read-only. Defines the type of CMP, such as VMware or OpenStack.
Host AggregatesString
Interface NameStringThe name of the interface.
Is ExternalList [True, False]This is read-only. Limited to the object type Network and Network Container.
Is Primary InterfaceList [True, False]This is read-only.
Is SharedList [True, False]This is read-only. Limited to the object type Network and Network Container.
IP TypeList [Private, Public, Fixed, Floating, Elastic]This is read-only. Type of IP address.
Network EncapString
Network IDStringNetwork ID in OpenStack
Network NameStringNetwork name
Physical Network NameString
Port Attached Device - Device IDStringDevice ID for associated device, such as OpenStack or equivalent, in other CMPs.
Port Attached Device - Device OwnerStringDevice name for associated device, such as OpenStack or equivalent, in other CMPs (e.g. compute:nova, network:dhcp, or netowrk:router_interface).
Port GroupStringVMware or equivalent in other Hypervisors or CMPs.
Port IDStringPort ID for associated device, such as OpenStack or equivalent, in other CMPs.
Port NameStringPort name for associated device, such as OpenStack or equivalent, in other CMPs.
Private IPStringOne or more secondary private IP addresses that are assigned to the given Network Interface.
Segmentation IDString
Subnet IDString
Subnet NameString
Tenant IDStringThis is read-only. The unique ID for the tenant object.
VM IDStringThis is read-only. This is the Instance ID in OpenStack.
VM NameStringInstance Name in OpenStack.
vCD AppStringThe application name defined in vCloud Director; previously vApp
vCD Org StringThe organization name defined in vCloud Director; previously vOrg.
VPC IDStringThis is read-only. This is a naming convention that is used at the time of creation. Example: vpc-1a2b3c4d.
VPC NameStringAn optional name tag for the VPC.
VPCs ListStringList of all the VPCs.

You can modify some of the properties for the cloud extensible attributes, except for the read-only attributes. By default, all cloud extensible attributes are configured to allow Read/Write access for the Cloud Platform Appliances. You can change this configuration to read-only so the Cloud Platform Appliances can only access the attribute values, but not modify them. Note that when you reference modification for a read-only attribute in a cloud API request, the Cloud Platform Appliance returns an error because it cannot modify the attribute value. For information about how to configure extensible attributes, see About Extensible Attributes.

Note: An upgrade could fail if the name of an existing extensible attribute matches the name of any of the cloud extensible attribute for a different object type. You must define values for all required cloud extensible attributes in a cloud API request.

Extensible Attributes for Tags in AWS and Azure

You can define metadata in the form of tags for AWS and Azure which are captured through a vDiscovery process and you can save the tags as extensible attributes in NIOS. You can use predefined attributes or create your own tags that consists of an user-defined key and an optional value. The tag values defined in AWS and Azure are translated into corresponding extensible attribute values in NIOS.

Note the following about saving tags defined in AWS and Azure as extensible attributes in NIOS:

  • You must add extensible attributes in NIOS with the same name as the tags added in AWS or Azure.
  • You can add or delete tags in Azure, but cannot update the tags.
  • The tags are translated only when the corresponding extensible attributes are created in NIOS.
  • The tags are discovered only during the next vDiscovery process after creating the corresponding extensible attributes in NIOS.
  • It is not recommended to delete the extensible attributes which you have created for the tags defined in AWS and Azure.

The following table shows the translation of tags defined in AWS and Azure, as extensible attributes in NIOS:

Table 7.11 Tag Translation

AWS ObjectAzure ObjectNIOS Object
EC-2 InstanceVirtual MachineVM
InterfaceVirtual InterfaceManaged private IP address: Any DNS record, fixed address, or reservation associated with that IP address.
Interface (tags are the same for private IP address and public IP address of the same interface)Public IP address (Public IP address has specific tags in Azure)Managed public IP address: Any DNS record, fixed address, or reservation associated with the IP address.
VPCVirtual NetworkVPC
SubnetSubnet (no tags for subnet in Azure)Network

Note: NIOS generates alert messages about tags that are translated and tags that are skipped due to missed extensible attributes or incorrect extensible attributes types will be displayed in the syslog and infoblox.log file.

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