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67 Messages

Friday, February 12th, 2021 10:12 PM

BGW320-500 Bridge Mode and/or IP Passthrough Question

Hello everyone,

I have 1Gbps home fiber from AT&T.  I've had it for 2 years, works great.

Yesterday, a tech visited to upgrade my equipment to a brand new BGW320-500.  I also ordered a static IP address.

What I want to do is have this device be as "dumb" as possible.  I have a Ubiquiti Dream Machine Pro, and I want to configure this device with the static IP address I have, and, have it handle all routing/security/etc.  i.e. I want the AT&T device to do nothing (no wifi, no firewalls, nothing), and, I also do not want the AT&T device to give out its own IP addresses (I want my Ubiquiti Dream Machine pro) to handle everything (as if it was directly connected to the internet itself).

I've been told what I want/need is to configure the AT&T device to be in "Bridge Mode".  However, I cannot find this setting in the config menus.  I do find "IP Passthrough" which people have told me is essentially the same thing. Is that accurate?  Is "IP Passthrough" what I want?

If IP Passthrough is what I want, then how do I configure the AT&T device, with a static IP address?  Or no IP address?  

Any help & guidance would be appreciated.  I've searched the forums and cannot make clear sense on what I've found there.

Thank you,

Mark

New Member

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1 Message

6 months ago

Paging expert @JefferMC ... :) Is static IP block with cascading router still the best performance option (getting as much bandwidth and speed) out of an AT&T BGW320-505 to a Unifi Dream Machine SE? Or are there other ways? 

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2 Messages

3 months ago

Hate to revive this thread, but I have a few things I want to clarify about this setup.

Trying to setup a Sonicwall with the BGW320 Gateway. I have a block of static IPs.

My first attempt at configuring, I disabled IP Passthru, disabled Public Subnet, and setup Cascading Router with 192.168.1.X address provided by the Gateway. Basic Internet is working, however my public IP shows as the address of the Gateway itself.

What I'm seeking is the setup where one I assign the Sonicwall one of my public IPs from the block, and hopefully have that address showing as my IP to the outside world. Yes I realize from reading the previous that I'm limited to one IP of my block in that case.

If I want to do this setup, can you rehash the configuration? I'm not sure if this is done just by enabling Public Subnet, or if it requires the Cascading Router. From my understanding those are mutually exclusive. 

Knowing that answer, I can probably resolve it.

JefferMC

ACE - Expert

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31K Messages

3 months ago

@jbrooksga , what you're trying to do is best accomplished by undoing the cascaded router, setting up the Public Subnet, and manually assigning your SonicWall's WAN IP to be on of the 5 usable public addresses from your block, along with a Default Gateway of the Router IP of the subnet block (the .6 address, which will be adopted on the Gateway's LAN Ethernet by the Gateway) and the Subnet Mask of 255.255.255.248.

(edited)

New Member

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2 Messages

3 months ago

Would it be functionally equal to use the Public Subnet DHCP public option for the Sonicwall WAN port, and then allocate that public address as a permanent reservation. I'm assuming that would be the same as manually assigning it.

JefferMC

ACE - Expert

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31K Messages

3 months ago

Yeah, assuming that you're not going to connect anything else to your Gateway.  

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