--- sourceDocument: Australia Telecommunications Network Inventory sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/telecom-network-inventory Release : - australia ft:locale : - en-US ft:publication_title : - Australia Telecommunications Network Inventory ft:clusterId : - telninv bundleId : - telninv workflow : - Customer and Industry --- # Create Logical Interface function # Create Logical Interface function {#ariaid-title1} Release version: Australia Updated March 12, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of Create Logical Interface Function The Create Logical Interface function facilitates the creation of logical interfaces within the Telecommunications Network Inventory application. These interfaces can serve as termination points for logical connections or as child entities of existing physical or logical interfaces. This function allows for flexible bandwidth configurations and includes options to set the virtual flag for logical network interfaces. Show full answer Show less ## Key Features * **Dynamic Interface Creation:** Users can create logical interfaces connected to both physical and logical interfaces, which can support multiple child logical interfaces. * **Workflow Integration:** This function can be utilized as an action within Workflow Studio, enhancing inventory-related data operations. * **Customizable Input Fields:** Users can define various attributes such as name, type, role, and associated equipment for the logical interface. * **CI Relationship Management:** By default, it establishes a "Contains: Contained By" relationship for parent-child associations, ensuring unique relationships for multiple inputs. ## Key Outcomes Upon using the Create Logical Interface function, users can expect: * Efficient management of logical interfaces within the telecommunications inventory. * Flexibility in configuring bandwidth and categorizing network entities. * Streamlined workflow actions that enhance operational efficiency. * Access to glide record information of the created logical interface for further reference. The Create Logical Interface function enables you to create logical interfaces in the Telecommunications Network Inventory application. You can use the Create Logical Interface function to create the logical interfaces that are created either as a termination point for logical connections or as a child of a physical or logical interface. A physical or logical Interface can have multiple child logical interfaces. The bandwidth of the logical Interface isn't fixed and you can configure it as applicable. Also, this function sets the virtual flag of the logical network interface. You can use this function as a Workflow Studio action in the Telecommunications Network Inventory workflow. ## Roles and availability {#create-logical-interface-action__section_kfd_fdk_x5b} Users with the admin role can add an action to a flow and define the configuration details of the flow. This function is available as a Workflow Studio action in the Telecommunications Network Inventory application so that you can perform inventory-related data operations. ## Input fields {#create-logical-interface-action__section_izk_bbs_x5b} The following table lists the input fields in the Create Logical Interface function and their descriptions. {#create-logical-interface-action__table_w3g_2fm_1vb__entry__3} | Field Name | Description | Data Type | |-|-|-| | Parent Interface | Parent network interface record to create the relationship with a logical interface. Click the add icon (![Add icon]()) to add an interface. | Array.String | | Name | Name of the new logical interface. Note: If you don't enter the logical interface name, this flow action generates the model name with the number after the maximum number of unit positions. | String | | Type | Optional user-defined type code that you use to categorize the types of various network entities or assets. | Reference.TRF Value | | Role | Optional user-defined role code that you use to categorize the roles or purposes of the various network entities or assets. | Reference.TRF Value | | Function | Optional user-defined function code that you use to categorize the functions of the various network entities or assets. | Reference.TRF Value | | Telco Equipment | Equipment that is associated with the logical interface. If you do not enter the name of the equipment, this function selects the associated equipment from the parent interface. | Reference.Telco equipment | | Port Bandwidth | Bandwidth of this logical connection. | Reference.Bandwidth | | Product Model | Network interface model that is associated with the logical interface. | Reference.Network Interface Model | | CI Relationship | Type of CI relationship. By default, the Create Logical Interface flow action sets the CI relationship to Contains : Contained By. The parent interface can support multiple interface record references as an input. If you enter the same parent CI more than once, the system ensures that it associates to a unique set of parent-child relationship. | Reference.CI Relationship | | Aggregation Interface | Option to ensure that each parent interface must only have one child interface. | True/False | [Table 1. Input fields of logical interface action] {#create-logical-interface-action__table_w3g_2fm_1vb} To learn more about the variable data types, see [Flow Designer input and output data variables](https://www.servicenow.com/docs/access?context=action-inputs-outputs&version=australia&pubname=australia-build-workflows&ft:locale=en-US). ## Output {#create-logical-interface-action__section_rnx_nxn_dvb} The following table lists the information about the function output. {#create-logical-interface-action__table_snx_nxn_dvb__entry__3} | Name | Description | Data Type | |-|-|-| | Result Id | Returns a glide record of the logical interface. | Record | [Table 2. Output of function] {#create-logical-interface-action__table_snx_nxn_dvb} **Related concepts** * [Allocate Free Number function](https://servicenow-prod.fluidtopics.net/PuuJW2JxrgTywUnIAXcLeg "The Allocate Free Number function enables you to assign free numbers from the Telecommunications Network Inventory number record. You use this function to allocate a quantity of numbers from a specified range to add against the configuration item (CI) in a number element.") * [Create CI From Template function](https://servicenow-prod.fluidtopics.net/LL~zoSfWRCAzN6vgmL65sw "The TNI Create CI From Template function enables you to create the inventory instance in the designated site or equipment holder in the Telecommunications Network Inventory application. This occurs when you instantiate an inventory with the inventory template. You can automatically create the inventory when you instantiate the network inventory design and assign process.") * [Cascade Update function](https://servicenow-prod.fluidtopics.net/W97Jp~xw_w8ibvUCGhteRw "The Cascade Update function enables you to update a configuration item (CI) attribute in the Telecommunications Network Inventory application and cascade the change in all related CIs. You can use this function to automatically cascade the field values in related CIs when you use Workflow Studio.") * [Create and Assign Range/Single Number function](https://servicenow-prod.fluidtopics.net/gjw3tsjWew5ep25EHTlyEA "The Create and Assign Range/Single Number function enables you to create the inventory number records for a number range when you process the network inventory workflow.") * [Create Logical Connection function](https://servicenow-prod.fluidtopics.net/DgjILFpYXEo~QjRh9KK9ZQ "The Create Logical Connection function enables you to create a logical connection record in the Telecommunications Network Inventory application based on the input (interfaces) that you receive when you instantiate an inventory.") * [Create Physical Connection function](https://servicenow-prod.fluidtopics.net/7ieQdTkzr9dlznGE7OWaYw "The Create Physical Connection function enables you to create a physical connection record in the Telecommunications Network Inventory application based on the input that you receive when you instantiate an inventory.") * [Create IP subnetwork function](https://servicenow-prod.fluidtopics.net/A5Gcil3U92nQAk1e9LyYJQ) * [CIDR to IP range function](https://servicenow-prod.fluidtopics.net/2zW3eRjGoF3fvMBCMr30Ww "Classless Inter-Domain Range (CIDR) to IP range flow action enables you to create a set of IP addresses using the Classless Inter-Domain Range (CIDR) using Telecommunications Network Inventory application based on the input that you receive when you instantiate an inventory.") * [Get Interface Summary function](https://servicenow-prod.fluidtopics.net/eBCtV3e6ngo0JOIWyFGiJw "The Get Interface Summary function enables you to retrieve all the network interface records that are associated with the input. You can use this function to automatically get the details of the available interface, connected interface, and the physical connection of the equipment in the Telecommunications Network Inventory application when you use Workflow Studio.") * [Lookup Next Hub function](https://servicenow-prod.fluidtopics.net/ZzBLvcSLnnYarEgYkudhZQ "The Lookup Next Hub function enables you to take the network interface record as input and return the details of the related physical connection record. You can automatically get the details of the physical connection and interconnected ports of the equipment in the Telecommunications Network Inventory application when you use the Workflow Studio application.") * [Path Search function](https://servicenow-prod.fluidtopics.net/Y0XR1w7cHadZ_06YQjXcOQ "The Path Search function enables you to execute the path computation function between the starting and ending sites in the Telecommunications Network Inventory application. You can use this function for the path computation when you process the network inventory design and assign.")