Tutorials · Fibre & GPON
How to Provision ONUs on a GPON OLT
Bring a new subscriber or building online: discover the ONU, authorise it, apply a bandwidth profile and map services to VLANs.
Before you start
- A GPON OLT with uplinks configured
- Spliced fibre and splitters with correct optical levels
- Service VLANs (Internet, voice, IPTV, management)
Step by step
Check optical levels
ONU receive power should be within the optic's range, typically −8 to −27 dBm for Class B+. Fix dirty connectors before continuing.
Discover the ONU
Connect the ONU. It appears in the OLT's list of unauthorised ONUs with its serial number.
Authorise it
Bind the serial number (or password) to a PON port and ONU ID so only known devices can join.
Apply profiles
Assign a DBA/bandwidth profile (for example 300 Mbps down, 100 Mbps up) and a line or service profile.
Map services
Map ONU ports and GEM ports to service VLANs: Internet, voice and IPTV, with QinQ if your design uses it.
Verify
Check the ONU state is online, the optical levels, and run a speed test from the subscriber side.
Pro tips
- Use templates for each service plan so provisioning is consistent.
- Enable rogue-ONU detection to protect the whole PON tree.
FAQ
Frequently asked questions
What does an ONU 'serial number authentication' do?
It allows only ONUs registered on the OLT to join the PON, preventing unauthorised devices.
Stuck on a step?
Ask Navijin technical support or an authorised partner for help with your configuration.