I don't think you understand what we are talking about here.
The Wan Port is only capable of 1Gb max transfer speed. But you can enable Wan Aggregation Combining the Wan+Lan 4 to achieve max 2Gb speed. But only if both the modem and router supports LACP-IEEE 802.3ad. The XB7 does not support LACP-IEEE 802.3ad
The Wan Port supports speeds up to 2.5Gb and does not require Wan Aggregation.
I think the manual has the ports labeled incorrectly. The only 2.5 GB port is the far right port. The one you highlight is the WAN port which the manual shows as 2.5 Gbps WAN/LAN. That port is Blue for a WAN port.
I am looking at the actual router, AXE11000. The port indications are the same on both versions but located in different positions.. I am not lucky enough to have an internet connection fast enough to test..
So, being a person who endured the same confusion when trying to get my connection above 1GB using the S33 and the AX-11000. I have the 2.5GB port from the modem connected to the 2.5GB Ethernet port on the AX and the second 1GB Ethernet port on the modem to the WAN port on the AX. Both cables from the modem are CAT6E, the exact same specs, and 3ft long. I have two cables running from the AX (Ports 1 and 2) to my computer which has a 2.5GB port and a 10GB port. I have a CAT8 in the 10GB port and CAT6E in the 2.5GB port. Enabled Dual WAN and set the primary/secondary ports to the 2.5GB port, set it to load balance 3:1.
Comcast swore that it would be impossible to use both ports using only one IP address. There are some other changes that I made that are particular to my setup since I'm also using an ASUS ROG STRIX Motherboard. It tops out at around 1400Mbps down and 40 up with no Wifi.
I am curious since the AX11000 similar to the AXE11000 in that it has a single “multi Gig” port if you keep the 2.5 G (modem) to 2.5 G (AX11000 port), remove the 2nd WAN connection, then just run LAN aggregation what speed you get? As Comcast notes you are only given 1 IP address, is it not the same result?
Interesting, 1432 DL and 41.75 UL. Ping 11.6 and jitter 0.70. The internet status switched to unplugged, WAN IP is 0.0.0.0 yet nothing has changed. It's pulling 100% of the bandwidth completely through the 2.5G ports and no Wifi. Even more amazing is there are 20 connected devices. I think initially I had it configured as an access point but now it's only in wireless router mode. The speed test on the ASUS Wireless router consistently hit that speed, but when tested via the internet browser, it has never been above 940Mbps. I'm pretty sure these are being measured at different points. 1420 from the router to the server, but substantially less from the browser to the server.
If you want to pull higher than 1 Gbps LAN side probably the cheapest way is to add a dual NIC that supports 802.3ad and run the exact same spec parallel cables from computer to AX11000. It’s been over 20 years since I’ve tinkered inside a PC I have no idea what PCI type is current, but here’s one:
Gigabit Dual NIC with Intel 82576 Chip, 1Gb Network Card Compare to Intel E1G42ET NIC, 2 RJ45 Ports, PCI Express 2.1 X1, Ethernet Card with Low Profile for Windows/Windows Server/Linux https://a.co/d/bOpQRWp
I have the GT-AX11000 router with 2GB ISP Service. Through the ISP's router it was pulling 1.8 GB and after I switched to this router it still pulls consistent (1.6 - 1.8GB). I plugged the cable from the modem into the 2.5GB port, in the UI under dual wan, set Primary to the 2.5 Port. (Don't turn on Dual Wan).
Individual devices downstream will only pull "Up to" 1GB each, as the LAN ports are only capable of that and of course it depends on their hardware anyway. Having the larger pipe is most useful when you have a house full of devices that love internet bandwidth so they can all share the load but not restrict each other, not really so one can have a full 2GB download on a PC. (Yet)