So a couple weeks ago I broke down and upgraded my home router to an Asus GT-AX11000. Originally I was interested in the AXE11000, but since there was no way to disable the 6GHz band in favor of a second 5GHz band, I decided to jus stick with the AX11000.
Anyways, so things had been going well, and I figured for funsies I would enable WAN LAG between my new AX11000 and my Arris SB8200. I have Comcast's gigabit plan, so I figured I wouldn't get any speed benefits, but I figured that I may as well set it up since the modem and router both support it. So I logged into the modem, and checked the box to enable WAN LAG on the SB8200, connected two CAT6A STP cables from the modem to the AX11000's WAN and port 4, and then enabled WAN LAG on the router.
When I applied the setting, everything reset and.... nothing. No internet out to any of my connected devices. I power cycled the modem and router several times, and nothing was working. I verified both LAG settings were enabled. I made sure the AX11000 was on the latest firmware. I was just not getting anything. I called Comcast, and they said they were seeing signals to my modem just fine. Finally, I resigned to just revert things back. I connected my computer directly into the modem, accessed the settings, and disabled WAN LAG. I did the same in the AX11000 settings... but still I could not get out to the internet. Power cycled all devices several times... still nothing. So I went and did a factory reset on the modem to make sure LAG settings weren't stuck. After it came back up, still nothing. Called comcast, and they said things looked fine on their end. I connected my PC directly to the modem, and was browsing internet just fine. Put the AX11000 back into the mix, and my PC could not access internet.
Strange enough, I saw the router was detecting a public IP... So I went into the settings, and even performed a speedtest from within the router. So it appeared as though the AX11000 was successfully getting internet connectivity from the modem, but was not sharing that down to connected devices. I tried pinging IPs directly to make sure it wasn't a DNS issue. No dice. It was as if NAT was failing or something.
Finally, in order to resolve everything, I had to factory reset the AX11000... which I really didn't want to do after getting all my settings configured, ports forwarded, IPs statically assigned, etc. But that was what fixed it.
So, has anyone else been able to successfully set up WAN LAG between their Asus GT-AX11000 and an Arris SB8200? Have any of you run into similar issues as me?