marcosw's profile

1 Message

Thursday, January 18th, 2024 2:41 AM

BGW320-500 Bridge mode

I would like to put my BGW320-500  into bridge mode.  I know I can use IP passthrough but that's not what I want.  I've been told that if I pay for 5 static IP addresses I can put the gateway into bridge mode.  Is this correct?  

ACE - Professor


5.4K Messages

3 months ago

That’s a negative.   

Community Support


231.3K Messages

3 months ago

Hello @marcosw! Thank you for reaching out to us! We understand that you're trying to put your AT&T BGW320-500 gateway into bridge mode. We hear you, and happy to assist you.


You can put your gateway into bridge mode. However, you would need a Static IP block, then what you want is cascaded router. The network set up in the Cascaded Router section will be given all traffic that arrives from the Internet for that subnet block and the public subnet traffic from that address will be routed to the Internet.


To configure Cascaded Router mode, connect your router to a Gateway LAN port, and let it get a LAN IP via DHCP. Then, go to the Gateway’s Home Network > IP Allocation page and click allocate so that the Gateway reserves that IP address for your router. Next, go to the Gateway’s Home Network > Subnets & DHCP page, turn on Cascaded Router enable and fill in that IP address in Cascaded Router Address, and the network address of your block in Network Address. The mask should already be correct at


For more information please visit our Forum thread.


Let us know, how it goes.

For further assistance we're here to assist you.


Thank you


AT&T Community Forum Specialist

ACE - Expert


35K Messages

3 months ago

"Cascaded Router" mode with a Public Static block is still not exactly "Bridge" mode.  It's less intrusive than IP Passthrough, but it's still a routing hop.  And you have to pay for the Public Static block.

What is your specific issue with IP Passthrough?

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