OLT Automatic Splitter Discovery Command

The OLT automatic splitter discovery is performed using the display ont-auto-find command on the PON port, which enables the OLT to detect and register connected ONUs automatically.

Overview of Automatic Discovery

Automatic discovery allows an OLT to detect newly connected ONUs under a designated PON port without manual configuration. When enabled, the OLT compares the ONU information with pre-configured service profiles or line templates and automatically registers the ONU if it meets the criteria. This process reduces manual configuration workload and ensures ONUs are brought online efficiently .

Typical Command Usage

1. Access the OLT CLI and enter privileged EXEC mode.
2. Select the PON port where the ONU is connected.
3. Run the auto-discovery command:

display ont-auto-find

This command scans the PON port for unregistered ONUs. If the ONU is detected, it will appear in the discovery list, and you can then configure it to go online .

Steps for Successful Discovery

• Ensure the PON port is active and not part of a faulty protection group, as simultaneous transmission from multiple OLTs can prevent discovery .
• Verify the optical power levels at the ONU are within acceptable ranges (typically around –8 dBm for GPON devices) to ensure proper communication .
• After discovery, configure the ONU to go online using the OLT CLI or management system.
• If auto-discovery fails, temporarily disconnect the PON port from other conflicting signals and rerun the command .

Additional Notes

• Auto-discovery can be time-based, with the OLT periodically scanning the PON port for new ONUs.
• ONUs that fail authentication or do not match the service profile can be placed in a silent state until corrected .
• Some OLT vendors may provide vendor-specific commands or web interfaces for auto-discovery, but the underlying principle remains the same: detect, authenticate, and register ONUs automatically . By following these steps, network administrators can efficiently manage ONUs connected through optical splitters and ensure proper registration and service provisioning.