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This post is the second of those that conform the main theme: FTTx GPON Terminal Operation and Maintenance
FTTx GPON TERMINAL OPERATIONS & MAINTENANCE
Process of Adding an ONT
Terminal Configuration Process
Two ONT Adding Modes
· Method 1: Adding an ONT in automatic discovery Mode
§ Process
1. Connect an ONT to the fiber and power it on.
2. Enable the function of automatically discovering PON ports.
3. Adding the ONT to the OLT: confirm the SN of the automatically discovered ONT.
4. Register the ONT.
Method 2: Adding an ONT Manually
§ Process
1. Connect an ONT to the fiber and power it on.
2. Add an ONT on the OLT: Manually add the SN of the ONT
3. Register the ONT.
Adding an ONT in Automatic Discovery Mode
· Enable the function of automatically discovering PON ports
· Functions of the port ont-auto-find command
§ This command is used to enable or disable the ONT auto-discovery function of a GPON port. After the automatic ONT discovery function is enabled, the OLT periodically searches for new ONTs.
§ Usage
ü Run the config command to enter global config mode, and then run the interface gpon command to enter GPON mode.
ü By default, the ONT auto-discovery function of a GPON port is disabled.
ü After a new ONT goes online, the board reports a group of ONT information to be confirmed to the CLI terminal, and stores the information in an ONT registration buffer for confirmation.
ü ONTs can be added in 2 modes. You can run the ont add command to add an ONT offline or run the ont confirm command to confirm an automatically discovered ONT.
· Query the discovered ONT
· Confirm the discovered ONT
· Functions of the ont confirm command
§ This command is used to confirm an ONT that is in the auto-discovery state. If the ONT auto-discovery function is enabled on the OLT, after an ONT goes online, the OLT obtains the registration information about the automatically discovered ONT and the ONT is in the auto-discovery state. After you run this command to confirm the ONT, the ONT enters the normal working state.
§ Usage
ü Run the config command to enter global config mode, and then run the interface gpon command to enter GPON mode.
ü When confirming an automatically discovered ONT, you must specify the ONT capability set profile.
ü You must select correct and existing profiles for an ONT to be confirmed. The profiles define the specifications and capabilities of the ONT. If the ONT profiles are set incorrectly, the ONT fails to work properly after going online.
ü It is recommended that you add location and time information to each ONT to facilitate fault location and maintenance.
ü The SNs of ONTs configured in the same system must be unique.
ü The OLT can manage ONTs in SNMP or OMCI mode. If an ONU functions as an independent NE and is managed by the NMS, select the SNMP management mode. If an ONU is not managed as an independent NE and all its configurations are managed by the OLT through the OMCI protocol, select the OMCI management mode.
ü For ONUs in SNMP management mode, you only need to configure the GPON line parameters and management channel parameters on the OLT. This type of ONU supports a maximum of 128 GEM ports.
ü For ONUs in OMCI management mode, you need to configure all parameters (including the line parameters, UNI port parameters, and service parameters) required by the ONU on the OLT. This type of ONU supports a maximum of 32 GEM ports and does not support the configuration of management channel parameters.
Adding an ONT Manually
· Functions of the ont add command
§ This command is used to add an ONT and specify configuration data for the ONT. Run this command to add an ONT and configure services offline. After the ONT goes online, the configuration data is delivered to the ONT through the ONT management protocol to complete the configuration. After an ONT is added successfully, you can configure various services for the ONT. When the ONT is not in position, the configurations are temporarily stored on the service board.
§ Usage
ü Run the config command to enter global config mode, and then run the interface gpon command to enter GPON mode.
ü By default, the ONT capability set profiles 1–7 are the ONT capability set profile of the default GPON port.
ü When adding an ONT, you must specify an ONT capability set profile.
ü A correct and existing ONT service profile needs to be selected for the added ONT. The profile defines the specifications and capabilities of the ONT. If the ONT service profile is incorrectly set, the ONT fails to work properly after going online.
ü It is recommended that you add location and time information to each ONT to facilitate fault location and maintenance.
ü The passwords of the ONTs connected to the same port must be unique.
ü The SNs of ONTs configured in the same system must be unique.
ü The OLT can manage ONTs in SNMP or OMCI mode. If an ONU functions as an independent NE and is managed by the NMS, select the SNMP management mode. If an ONU is not managed as an independent NE and all its configurations are managed by the OLT through the OMCI protocol, select the OMCI management mode.
ü For ONUs in SNMP management mode, you only need to configure the GPON line parameters and management channel parameters on the OLT. This type of ONU supports a maximum of 128 GEM ports.
ü For ONUs in OMCI management mode, you need to configure all parameters (including the line parameters, UNI port parameters, and service parameters) required by the ONU on the OLT. This type of ONU supports a maximum of 32 GEM ports and does not support the configuration of management channel parameters.
Checking the ONT Status
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