OLT Management
Manage your fiber network infrastructure with OLT (Optical Line Terminal) integration.
What is an OLT?
An OLT (Optical Line Terminal) is the service provider’s endpoint in a fiber optic network. It connects to ONUs/ONTs at customer premises through fiber cables.
Zettabit can connect to supported OLTs to:
- View connected ONUs
- Monitor signal levels
- Check connection status
- Manage customer fiber connections
Supported Vendors
Zettabit supports the following OLT vendors:
| Vendor | Protocol |
|---|---|
| BDCOM | SNMP |
| VSOL | SNMP |
| Zibbix | SNMP |
OLT List
The OLT management page shows all configured devices:
| Column | Description |
|---|---|
| Name | Friendly name |
| Vendor | Manufacturer |
| IP Address | Management IP |
| Status | Online/Offline |
| ONUs | Connected ONU count |
OLT Information
Clicking on an OLT shows:
Overview
- Device information
- Uptime
- Port status
- System resources
ONU List
Connected ONUs with:
- ONU ID
- Serial number
- Status (Online/Offline)
- Signal strength
- Port assignment
Alarms
Current and historical alarms:
- Power loss events
- Signal degradation
- ONU offline alerts
Monitoring Features
Signal Levels
For each ONU, view:
- Rx Power - Received optical power (dBm)
- Tx Power - Transmitted optical power (dBm)
- Distance - Estimated fiber distance
Acceptable Signal Ranges
| Measurement | Good | Marginal | Poor |
|---|---|---|---|
| Rx Power | -8 to -25 dBm | -25 to -28 dBm | Below -28 dBm |
| Tx Power | 0 to 5 dBm | -1 to 0 dBm | Below -1 dBm |
Status Indicators
| Status | Meaning |
|---|---|
| 🟢 Online | ONU is active and connected |
| 🔴 Offline | ONU is not responding |
| 🟡 LOS | Loss of Signal |
| 🟠 Dying Gasp | Power failure detected |
Use Cases
Customer Troubleshooting
- Customer reports slow or no connection
- Check ONU status in Zettabit
- View signal levels
- Identify if it’s a fiber issue (low signal) or equipment issue (ONU offline)
Network Planning
- Monitor ONU counts per port
- Identify heavily loaded PON ports
- Plan upgrades based on capacity
Proactive Maintenance
- Set up alerts for degrading signals
- Identify ONUs that may fail soon
- Schedule preventive maintenance
Troubleshooting
OLT Shows Offline
- Check network connectivity to OLT
- Verify management IP is correct
- Check SNMP community string
- Ensure no firewall blocking
ONU Data Not Updating
- Force sync the OLT
- Check OLT credentials
- Verify SNMP/Telnet access
Missing ONUs
- ONU might be newly added - sync again
- Check if ONU is registered on OLT
- Verify PON port is included in monitoring
Quick Links
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