UISP Fiber - Initial Configuration

Readers will learn how to start implementing UFiber networks by configuring the UFiber OLT and provisioning the UFiber ONUs.

Applicable to the v4.0.0+ firmware on the UFiber OLT and ONU models. Please see the Related Articles below for more information.
Devices, accessories and products related to this article:

Introduction and Network Diagram

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The UFiber GPON equipment is designed to provide robust hardware that is ease to deploy and manage. This article provides the steps needed to log into the OLT and start configuring the UFiber network. The UFiber network can be monitored and managed using the built-in Web UI or the Ubiquiti Network Management System (UNMS).


Example scenario using the UFiber Accessories and the UFiber OLT, while managing the OLT through the management port.

Accessing the Management Interface

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By default, the UFiber OLTs are managed through the dedicated management port. In order to log in to the OLT, follow the steps below:

1. Connect an Ethernet cable from a computer to the eth0 (management) interface on the OLT.

2. Configure a static IP address of your computer in the range (for example

ATTENTION: Starting from the v4.1.0 firmware, the default management IP address has been changed to DHCP with a fallback IP address of On older firmware versions, the address was statically set to192.168.1.1

3. Open a web browser and enter in the address bar.

4. Log into the OLT using the default credentials.

Username: ubnt
Password: ubnt

Upgrading the Firmware

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After logging into the OLT, it is recommended to upgrade the firmware to the latest stable UFiber release. The latest UFiber OLT firmware can be downloaded from the UFiber Downloads page.

NOTE:The OLT can also be upgraded via UNMS. See the How to Upgrade the OLT Firmware article for more information.

If the OLT is running a newer firmware release (v4.0.0 or newer), follow the steps below to upgrade the firmware:

GUI: Access the UF-OLT Web UI.

1. Navigate to the System settings  settings.png  tab.

2. Select the Firmware upgrade  upgrade.png  button in the System actions section and browse your filesystem for the firmware release you wish to upload.

3. Wait for the firmware to be uploaded to the OLT.

4. Reboot the device when prompted.

5. Wait for the firmware upgrade process to complete.

If the OLT is running an older firmware release (v3.1.3 or older), follow the steps below to upgrade the firmware:

GUI: Access the UF-OLT Web UI.

1. Navigate to the System settings in the bottom left corner of the Web UI.

System > Upgrade System Image > Upload a file...

2. Select Upload a file and browse your filesystem for the UFiber firmware release you wish to upload.

3. Wait for the firmware upgrade to complete.

NOTE: The firmware upgrade process is indicated with the process.png  loading icon.

4. Reboot the device when prompted.

Configuring the VLANs on the SFP+ Uplink Port(s)

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The SFP+ uplink port(s) are used to connect UFiber GPON network to the rest of the routing and switching domain. Traffic typically flows from the WAN to a router (for example the ER-8-XG), continues on to a switch (optional, for example the ES-16-XG) and finally to the UF-OLT. All of these devices are interconnected using 10Gbps fiber SFP+ modules or DAC cables (for example the UF-SM-10G) using the SFP+ slots. The two SFP+ uplink ports on the UF-OLT can also be aggregated in a LAG using either Static or Dynamic (LACP) Link-Aggregation.

NOTE:The UF-OLT has two SFP+ uplink ports whereas the UF-OLT-4 is equipped with one.

By default, the SFP+ uplink port is configured with VLAN1 set as the native VLAN. The native VLAN can optionally be changed or omitted completely. The SFP+ uplink port can also be configured to tag multiple VLANs, in essence creating a trunk/tagged port. Follow the steps below to modify the VLAN settings on the UFiber OLT:

GUI: Access the UF-OLT Web UI.

1. Navigate to the VLANs  vlans.png  tab to add the necessary VLANs.


Type: Single | Range
VLAN ID: <id>
Name: <name>

2. Determine which VLANs should be Tagged (T), Untagged (U) or Excluded (E) on the SFP+ uplink port(s).

NOTE:The added VLANs will be Tagged (T) on the SFP+ uplink port(s) by default.

3. Apply the changes by clicking on the SAVE button.

Configuring the ONUs using Bulk Editing

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On the PON side, the UFiber OLT has eight available PON ports where GPON OLT SFP modules (such as the UF-GP-B+ / UF-GP-C+) can be inserted. The modules then connects to the ONUs using several different fiber cables, PLC splitters and adapters. See our official Accessories article for more information on the available UFiber accessories.

The UFiber ONUs (UF-Nano / UF-LOCO / UF-WIFI) are configured through the OLT using Bulk Editing feature. On older firmware releases (pre v4.0.0) this was done by assigning an ONU Profile to the device. Various options can be configured on the ONUs, such as:

  • Mode Bridge or Router.
  • VLAN Applicable to Bridge Mode profiles.
  • Services For example SSH, Telnet and UBNT Discovery.
  • Firewall Applicable to Router Mode profiles.
  • Ports Physical link mode of the ONU Ethernet port(s)
  • Bandwidth Control Limit the upload and download speed of the ONU to a set Mbps value.

By default, all ONUs are assigned to Bridge Mode with VLAN1 set as the native VLAN. In the example below, a newly added ONU is changed to tag VLAN100 and VLAN200 with VLAN1 set as the native VLAN.

Follow the steps below to modify the ONU settings using the OLT Web UI:

GUI: Access the UF-OLT Web UI.

1. Navigate to the ONU list  onu-list.png  tab and select one or more ONUs. 

2. Select the CONFIGURE button to modify the ONU settings.

Admin password: <secret>
Mode: Bridge
Port 1 > Native VLAN: 1
Port 1 > Tagged VLANs: 100,200
NOTE: The VLANs set here must be present in the VLAN tab.

2. Apply the changes by clicking on the SAVE button.

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