In bridge mode, the F689 stops acting as a router and simply converts the fiber GPON signal to Ethernet (or VLAN-tagged Ethernet) — functioning as a pure Layer 2 bridge. Key changes:
| Feature | Default Mode (Router) | Bridge Mode | |---------|----------------------|--------------| | NAT | Yes | Disabled | | DHCP Server | Gives LAN IPs | Disabled | | Firewall | Active | Bypassed | | Wi-Fi | Available | Usually disabled | | Public IP | WAN side only | Passed to your own router | | Management IP | 192.168.1.1 (example) | May become unreachable unless on management VLAN |
After bridging, your personal router (e.g., Asus, MikroTik, pfSense) gets the public IP from the ISP directly, handles all routing, and avoids double NAT.
The term exclusive is sometimes used in ISP forums to mean:
Title: Enabling Bridge Mode on ZTE F689 – Advanced Procedure zte f689 bridge mode exclusive
Prerequisites:
Step-by-Step:
“Exclusive” Notes:
The ZTE F689 is a GPON Optical Network Terminal (ONT). It is typically provided by an ISP to terminate fiber service at a customer premises. By default, it acts as a residential gateway combining: In bridge mode , the F689 stops acting
This all-in-one design works for most users but can cause Double NAT or feature limitations for advanced users.
Click Create (or Add) to make a new WAN connection.
Click Apply/Save.
Switching to ZTE F689 bridge mode exclusive is not a simple toggle. You must prepare: The term exclusive is sometimes used in ISP
Your ISP VLAN ID & PPPoE Credentials: In exclusive bridge mode, the ZTE stops handling the login. You must program the PPPoE username/password into your personal router. Write these down.
A backup router: You need a secondary router to test the connection.
An Ethernet cable: Do not attempt this over Wi-Fi; you will get disconnected.