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J

New Member

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4 Messages

Mon, Aug 2, 2021 4:51 PM

Clarifying throttling of Fiber speeds with BGW320-505 in passthrough mode

We had 500MB fiber service installed earlier this week and received the BGW320-505 gateway. Aside from some install hiccups with a line cut in our area, once the service was turned on we were seeing a steady 500MB both up and down on our service. For work reasons, I can't use the BGW320-505 as a router and I installed my own Sonicwall router behind the BGW320-505 and switched the BGW320-505 to IP passthrough mode. Everything works, but I've noticed reduced throughput (~120mb up and down) since installing my router. While it's entirely possible (and likely) that the router is something of a bottleneck here, I know this particular router used to max out a 200+mb connection when used in a previous home. I've seen some references on this forum to ATT throttling connections in passthrough mode. Is there any truth to this? Are there other factors I'm not considering that could result in reduced bandwidth using the passthrough on the BGW320-505?

ATTHelp

Community Support

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192K Messages

1 y ago

We're here to help stabilize your speed, @jstrope!

 

When you configured your 3rd party router to be used with the BGW320, did you make sure you had the IP Passthrough settings enabled properly? This may assist you with getting higher speeds for your network.

 

Let us know if this helps!

 

Donovan, AT&T Community Specialist

New Member

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4 Messages

1 y ago

@ATTHelp Thanks for the reply. I’m not sure if I’m using the correct settings or not. The only thing I changed was enabling IP Passthrough on the BGW320 using DHCP to my router’s wan port’s MAC address. I rebooted everything and my router picked up a public IP and all routing is working fine. The bandwidth, however, was drastically reduced from 500MB to 120 (per various speed tests). As stated earlier, this Sonicwall router was previously maxing out the 200MB connection I previously had from Spectrum. All cabling here is cat6.

ATTHelp

Community Support

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192K Messages

1 y ago

Thank you for the update, @jstrope.

 

 

If you have confirmed IP passthrough was set up properly, then we recommend reaching out to ConnectTech support for further assistance. Let us know if you have more questions and thank you for contacting the AT&T Community and Forums Team. 

 

 

 

Elmi, AT&T Community Specialist. 

New Member

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4 Messages

1 y ago

Thanks @ATTHelp. Can I assume from your response here that AT&T does not in fact do any throttling of connections that use IP Passthrough?

ATTHelp

Community Support

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192K Messages

1 y ago

@jstrope

 

That's correct. If you need help with anything else, let us know.

 

Aminah, AT&T Community Specialist

dgomer

Tutor

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16 Messages

1 y ago

@jstrope

Please post what you find out. I too am seeing slower speeds, expecially on wifi, than I do with Spectrum. I say this becasue I for now am using AT&T and Spectrum as ISP's until my security cam vendor can figure out why myself and others can't reach our cameras through AT&T. But using the same wireless router and only switching the Ethernet cable, I can go from 400+ dl and 20+ ul on Spectrum, to less than 300 dl and less than 200 dl on AT&T.

This really makes no sense to me.

The

New Member

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4 Messages

1 y ago

I've confirmed that we aren't being throttled (at least in my area in NC). We see 500mb on the AT&T gateway and I put a fairly new Netgear Orbi behind that gateway using IP passthrough and got very similar speeds. For some reason, the Sonicwall I was using is only doing about 120mb in both directions, which is below its capabilities. But after seeing the Orbi push through 500mb, I'm satisfied the issue with the Sonicwall isn't AT&T related.

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