Network Model Relationship fields

  • Release version: Yokohama
  • Updated January 30, 2025
  • 7 minutes to read
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    Summary of Network Model Relationship fields

    The Network Model Relationship form in the Yokohama release enables ServiceNow customers to define and manage various types of relationships between network model components. This is essential for accurately modeling compatibility and hierarchy in the Telecommunications Network Inventory application, improving network design and inventory management.

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    Key Features

    • Name: Manufacturer-assigned name for the network model relationship.
    • Relationship type: Defines the nature of the relationship between models, such as Rack to Rack Slot, Equipment to Slot, Equipment to Network Interface, Slot to Card, Card to Slot, Card to Network Interface, Physical Connection to Logical Connection, and more. Each relationship type determines which models appear as parent or child options.
    • Parent product model: The parent in the relationship, selected from relevant equipment holders, racks, slots, cards, interfaces, or other applicable categories depending on the relationship type.
    • Child product model: The child in the relationship, filtered by model category to ensure compatibility (e.g., slots, subslots, network interfaces, strands).
    • Root product model: Used specifically for Slot to Card relationships to define a grandparent model (equipment or card) ensuring compatibility.
    • Count: Specifies the number of child product models that can be created under a parent model for certain relationship types, facilitating template creation.
    • Sequence: Defines the order of child entities in a relationship when multiple child models exist; automatically increments based on existing relationships.
    • Parent and Child bandwidth: Available in Logical Connection to Channel relationships to specify bandwidth capacities.

    Practical Implications

    By using these fields and relationship types, customers can accurately model network infrastructure components and their interdependencies. This enables better inventory accuracy, equipment compatibility enforcement, and streamlined network design workflows within the Telecommunications Network Inventory application.

    Each relationship type controls which models are selectable as parents and children, ensuring data integrity and reflecting real-world compatibility constraints. The inclusion of attributes like count and sequence supports detailed template creation and ordering of model components.

    Next Steps

    To utilize this functionality, customers should define network model relationships according to their network architecture needs, selecting appropriate relationship types and models. Refer to the related task "Define a network model relationship" for guided configuration.

    The Network Model Relationship form enables you to create a network model relationship.

    Table 1. Network Model Relationship form
    Field Description
    Name Manufacturer-assigned name of the network model relationship that is specified by the model manager.
    Relationship type Type of relationship. Select one of the following options:
    --None--
    No network model relationship exists.
    Rack to Rack Slot
    Relationship between a rack model and a slot model. This relationship indicates that the rack and the slot models are compatible with the equipment model.
    Equipment to Slot
    Relationship between an equipment model and a slot model. This relationship indicates that the number of slots and the slot models are compatible with the equipment model.
    Note:
    • The Parent product model field shows a list of all the equipment models related to the Telecommunications Network Inventory application.
    • The Child product model field shows only the slot models.
    Equipment to Network interface
    Relationship between an equipment model and a network interface model. This relationship indicates the interface model and the number of interfaces that are compatible and supported with the equipment model.
    Note:
    • The Parent product model field shows a list of all the equipment models related to the Telecommunications Network Inventory application.
    • The Child product model field shows a list of all the network interface models related to the Telecommunications Network Inventory application.
    Slot to Card
    Relationship between a slot model and an interface card model. This relationship enforces the Root product model field where an equipment model or a card model should be selected.
    Note:
    • The Root product model field shows a list of all the equipment models related to the Telecommunications Network Inventory application.
    • The Parent product model field shows the models of both the slots and subslots.
    • The Child product model field shows a list of all the interface card models.
    Card to Slot
    Relationship between an interface card model and a slot model. This relationship indicates that the slot model is compatible with the interface card model.
    Note:
    • The Parent product model field shows a list of all the interface card models.
    • The Child product model field shows only the models of the subslots.
    Card to Network interface
    Relationship between an interface card model and a network interface model. This relationship indicates that the number of interfaces in the network interface model are compatible with the interface card model.
    Note:
    • The Parent product model field shows a list of all the interface card models.
    • The Child product model field shows a list of all the network interface models.
    Physical Connection to Logical Connection
    Relationship between the models of a physical connection to a logical connection.
    Note:
    • The Parent product model field shows a list of all the physical connection models.
    • The Child product model field shows a list of all the logical connection models.
    Logical Connection to Logical Connection
    Relationship between one logical connection model to another logical connection model.
    Note:
    • The Parent product model field shows a list of all the logical connection models.
    • The Child product model field shows a list of all the logical connection models.
    Physical Connection to Network Interface
    Relationship between a physical connection to a network interface.
    Note:
    • The Parent product model field shows a list of all the physical connection models.
    • The Child product model field shows a list of all the network interface models.
    Logical Connection to Network Interface
    Relationship between a logical connection to a network interface.
    Note:
    • The Parent product model field shows a list of all the logical connection models.
    • The Child product model field shows a list of all the network interface models.
    Rack/Cabinet to Rack/Cabinet Slot
    Relationship between rack/cabinet and rack/cabinet slot.
    Note:
    • The Parent product model field shows a list of all the racks and cabinets.
    • The Child product model field shows a list of all the slots and sub-slots.
    Rack/Cabinet Slot to Equipment
    Relationship between a rack slot and the equipment.
    Note:
    • The Root product model shows all equipment holder models having Model category as Rack.
    • The Parent product model shows all equipment holder models having Model category as Slot.
    • The Child product model shows all equipment models related to the Telecommunications Network Inventory application.
    Rack/Cabinet Slot to Container Shelf
    Relationship between a rack slot and the shelf.
    Note:
    • The Root product model shows all equipment holder models having Model category as Rack.
    • The Parent product model shows all equipment holder models having Model category as Slot.
    • The Child product model shows all equipment holder models that have Model category as Shelf.
    Interface to Interface
    Relationship between two interfaces.
    Note:
    The Parent product model and Child product model field shows list of all the network interface models.
    Cabinet to Equipment
    Relationship between a cabinet and the equipment.
    Note:
    • The Parent product model field shows all equipment holders that have Container type as Cabinet.
    • The Child product model field shows all equipment models related to the Telecommunications Network Inventory application.
    Logical Connection to Channel
    Relationship between a logical connection and the channel.
    Note:
    • The Parent product model field shows a list of all the logical connection models.
    • The Child product model field shows a list of all the logical connection models that have Behaviour as Channel.
    Cable to Strand
    Relationship between a cable and the strand.
    Note:
    • The Parent product model field shows a list of all the cable models.
    • The Child product model field shows a list of all the strand models.
    Multi Chassis to Equipment
    Relationship between a logical composite and the equipment.
    Note:
    • The Parent product model field shows a list of all the equipment models which are having model category as logical composite.
    • The Child product model field shows a list of all the equipment models.
    Multi Chassis to Rack
    Relationship between a logical composite and the rack.
    Note:
    • The Parent product model field shows a list of all the equipment models which are having model category as logical composite.
    • The Child product model field shows a list of all the rack models.
    Count Numbers of child product models that can be created under a parent product model when a template is created.
    Note:
    This attribute is only for Equipment to Slot, Rack to Slot, Equipment to Network Interface, Interface card to Slot, Interface card to Network Interface, Cable to Strand, and Logical Connection to Channel relationship types.
    Root product model Grandparent model of the interface card for compatibility. Either select the equipment model or the interface card model. Then, select the search icon (Search icon.) and select a model.
    Note:
    This attribute is only visible for the Slot to Interface card relationship type.
    Parent product model Product model that is the parent to the child product model. Select the search icon (Search icon.) and select a model.
    Note:
    In the Rack-to-Slot relationship, the parent product model is the equipment holder model with the model category as Rack.
    Child product model Product model that is the child to the parent product model. Select the search icon (Search icon.) and select a model.
    Note:
    In the Rack to Slot relationship, the child product model is the equipment holder with model category as Slot.
    Sequence

    Sequence number of the child entities for a model relationship. If you enter a number in the Count field, the Sequence field appears.

    The default value is 1. If the parent model has multiple relationships, the sequence number for the first relationship is set to 1 and the number following the highest value of the first relationship is set for the consecutive relationships. For example, let's say that your equipment has a model relationship with two slots and two ports. When the relationship is created, the sequence number of the slots and ports are set to 1 and 3.

    Note:
    This attribute is only for Rack to Slot, Equipment to Slot, Equipment to Network Interface, Interface card to Slot, Interface card to Network Interface, Cable to Strand, and Logical Connection to Channel relationship types.
    Parent bandwidth Bandwidth of the parent product model.
    Note:
    This attribute is only visible for the Logical Connection to Channel relationship type.
    Child bandwidth Bandwidth of the child product model.
    Note:
    This attribute is only visible for the Logical Connection to Channel relationship type.