⚠️ Important Note: Networking mode configuration is only available on TNA-303L models (including TNA-303L-65) running firmware v1.12.4 or later. All other TNA-300 series models operate in Bridge mode only.


In 60GHz wireless deployments, these two operating modes fundamentally change how the device handles network layers, traffic routing, and IP management at the subscriber's location.


1. Bridge Mode (Default Operating Mode)

In Bridge mode, the device operates as a transparent Layer 2 (L2) bridge. The 60GHz wireless link acts essentially as a "virtual fiber cable over the air," bridging the network directly to the customer's hardware.

  • Traffic & Interfaces: All physical and wireless interfaces are bundled into a single WAN bridge (br-wan). The device passes all network traffic transparently without altering IP packets.

  • IP Allocation: The device does not create a local network or hand out IP addresses. The connected devices (or the customer's own router) receive IP addresses directly from your upstream DHCP.

  • Best Used For: Standard Point-to-Point (PtP) links, extending trunk lines, or corporate setups where the customer already has a dedicated router/firewall and only requires transparent high-speed transport.


2. Client Router Mode


Client Router mode turns the TNA-303L into a Layer 3 (L3) demarcation point (demarc) between the service provider's 60GHz infrastructure and the customer's local network. This mode becomes available only when the device's 60GHz wireless radio is operating in a client/station mode.

  • Traffic & Routing: The device routes traffic between the upstream WAN network (br-wan) and a newly created local network.

  • NAT & DHCP Server: NAT (Network Address Translation) is enabled, masking the customer's internal devices behind a single WAN IP. The device runs its own internal DHCP server to automatically assign private local IP ranges (IP range from/to, custom lease times, and DNS server IPs).

  • Port Forwarding Capability: Because NAT is enabled in this mode, the TNA-303L allows you to configure Port Forwarding rules. This is essential if the customer needs to expose specific local services (like local web servers, IP cameras, or gaming devices) to the external WAN network by mapping external incoming ports to specific internal local IP addresses.