Change Execution Process

To complete a GPON Broadband Service request, you follow a specific sequence of task stages within the change request:

• Create the change request: Initiate the request using the GPON Broadband Service change model.
• Path compute and create logical connection: Identify possible network paths between sites and establish logical connections.
• Create logical and physical connections: Select appropriate site and equipment interfaces based on designated equipment models for start (A) and end (Z) locations.
• Add interface cards: Specify site, equipment model, and slot information to add interface cards.
• Create equipment: Instantiate and validate equipment records at network sites.

Following these stages ensures successful design and assignment of GPON broadband services.

Path Computation for GPON Broadband Service

The change model includes an internal path computation function that determines feasible network paths based on parameters entered during task completion. This function automatically creates five default change tasks upon saving a new request. It handles scenarios such as:

• Creation of Passive Optical Network (PON) access and network paths when physical connections are available.
• Failure conditions if certain physical connections (e.g., between splitter and PFP, or OLT and FDP) are in use.
• Logical connection assessments based on VLAN path availability and Link Aggregation Group (LAG) usage.

Path computation collects data primarily during the "Compute and Create logical connection" task and uses defined equipment models and connection types to search paths.

Key Conditions for Path Computation

• Equipment hierarchy and relationships are updated and correctly instantiated at the site level.
• Physical and logical connections must be associated with valid, approved models and correctly linked as Configuration Items (CIs).
• Connection elements must be valid and available, with populated Port A and Port Z fields and availability status to prevent resource conflicts.

These conditions ensure accurate path identification and prevent errors during change execution.

Practical Impact for ServiceNow Customers

Using the GPON Broadband Service change model allows customers to automate complex network service provisioning with built-in validations and path computations, reducing manual errors and accelerating broadband service deployment. Understanding and following the specified task sequence and conditions ensures successful network configuration and inventory management aligned with your network expansion goals.