BGW320-500 ethernet connections to switch behind gateway can't connect to internet, access points can

Make and model # of the switches?

Have you tried connecting a wired device directly to the switch rather than through the CAT5e cables coming from different rooms?

Have you done a factory reset (hold reset button down for >15 sec) on the BGW?  Note that this will wipe out all changes you've done to any settings in the BGW.

I also have been having some strange wired behaviors lately, where I could only get devices to work by plugging them directly into the gateway - even after a factory reset of the BGW320. 

I’ve had AT&T fiber 1GB service since January 2022. I had the gateway set to Ip pass through mode and was using an old (reliable) Apple AirPort Extreme for routing (which also had three other Airport Extremes setup to extend my wireless network - w/wired backhaul). This setup was rock solid reliable until about a week or so ago (November 2022).

After trying several troubleshooting steps, I ended up doing a factory reset on the gateway, and letting it handle all the routing. I setup 2 of my Airport Extremes in bridge mode to be nothing more than access points. This worked for almost 2 days without issue, but something happens where the gateway stops allowing internet through my access points. 

During the time of trouble, I cannot access the gateway login page through an unmanaged switch(Netgear GS208) I have to plug directly into the gateway to reach the settings page. 

I’m trying a few additional things to simplify my setup and try and figure it out, but clearly the way the gateway is handling traffic has recently changed. 

@Nothing_Works: interesting, this started happening to me in the last week after working without issue for the month since install.  

@tonydi the two switches I used are a TP-Link TL-SG1008MP V2 and a Netgear GS308PP.  I'll try to find a long enough cat5e or better to try the direct to switch connection.  I have not yet done a factory reset of the gateway.  I'd like for this to be a last resort since it hasn't seemed to help other folks with similar issues.  If needs be I'll try it next weekend so there will be time to correct any setup issues before my wife and I need the internet connection on Monday.  I'm hoping the answer lies elsewhere.

We'd be happy to take a closer look at your gateway, @Nothing_Works.

We also appreciate the troubleshooting steps you have already tried on your own.

In order to proceed further, we would like you to join us in a Direct Message. You can do this by checking in the DM inbox which is located next to the bell icon.

We are looking forward to working with you to get this resolved.

Latoya, AT&T Community Specialist

@Nothing_Works   I really wish you had started your own thread instead of jumping in on one that's similar to your issue.  It makes it more difficult to deal with now that we will have multiple conversations all happening in the same spot. 

@island_dj   Go to http://192.168.1.254/cgi-bin/sysinfo.ha and see what the firmware version is and when the gateway last rebooted.  If you haven't rebooted the gateway yourself, does that time stamp coincide with the start of your issue?  AT&T has been firing out FW updates more frequently lately and with a long history of breaking things, I wouldn't be surprised if that's what happened.  Unfortunately they never release changelogs so we never know what they fixed.

Software Version:  3.20.5

FWIW, Hardware Version:  02001F00460050

Reboot time won't help since I've power-cycled a few times.  Thanks for that link though, I'll keep an eye on the firmware (software) version for changes.

Sorry @tonydi

I wasn’t trying to hijack the thread. Just wanted to indicate I had a similar issue. I don’t plan to continue posting here and will start my own thread to resolve my issues. I simply wanted to provide some background of my similar issue. As I mentioned, I still have some workarounds to try on my end. 

FWIW I’m also on 3.20.5

HW 02001E0046004F

Good luck

3.20.5 appears to be the most common version out in the field right now.  I got it 12 days ago on my BGW210.  My network is primarily connected via an ASUS router (with the exception of the AT&T IPTV gear, which is connected directly to the BGW210 or via switches), and I've been having no new issues post-update.

No issues with my network either since the firmware update. 

@island_dj 

Do you have any other equipment in your network? Wired firewall router possibly?

Nope, just the 2 access points in standalone mode and what's hanging off the wires - another switch feeding my media center (AppleTV, PS5, AVR, TV), another switch for my computer room (2xPC's, printer, storage), and a my office laptop.  Nothing that should have its own routing table.