In some ZTE firmware versions, enabling “Bridge Mode Exclusive” and prevents the ONT from obtaining a management IP from the ISP — forcing all traffic to pass through to the downstream router.
To set your to bridge mode, you typically need to access the web interface and create a new bridge-type WAN connection. zte f689 bridge mode exclusive
admin | Password: Web@0063 (Specific to some newer ZTE models). Step 2: Configuring the Bridge Connection In some ZTE firmware versions, enabling “Bridge Mode
For tech-savvy users where the option is "hidden" rather than removed, you can sometimes force the menu to appear using browser inspection tools: Access the Admin Panel : Log in via the gateway IP (usually 192.168.1.1 Inspect Element WAN Connection Step 2: Configuring the Bridge Connection For tech-savvy
Here is the "exclusive" trick most guides miss: You cannot simply add a second rule. You must the existing routing rule before creating the bridge.
Always check your ISP’s support policy — some providers forbid bridge mode or require advanced VLAN configuration. If in doubt, document original settings before making changes.