S

Visitor

 • 

1 Message

Monday, July 25th, 2022 12:47 PM

Closed

600mbps cap but paying for 1200mbps

Hello, I have scoured the net for internet optimization. Configured and restarted too many times to remember. I pay for 35up and 1200down. I do not get speeds over 650mbps. It’s been like this for months. Can someone help me with this? 

my setup: 

modem: MB8600

router: Tp-link Gx90

ethernet cable: Cat 6

Visitor

 • 

6 Messages

3 years ago

I have same behavior with Arris t25 and Asus rt-ax88u.... Router speed test 680ish.    My t25 has two wan links and supports link aggregation.  I enabled that on my modem in admin portal and then configured my router for dual wan in load balance mode (1:1 ratio) and I can get 950ish...  However this shuts down all my router extra features. 

Wan aggregation mode is the real answer to get a 2gbps bonded link from two 1 gig cables from the modem to the router but that's not working so I've got ticket open with ASUS. 

I suspect the next way to do is go spend money on a modem that supports 2.5gig like the mb8611 and also a router that has 2.5gig wan...  That should do it after spending about 700 bucks. Keep your receipts. 😉

Visitor

 • 

3 Messages

@user_e19d5e​ SO GUESS WHAT!   My ticket with ASUS finally resulted in a firmware update for my AX88u and listed is FIX for WAN AGGREGATION .

I again went to try out the new firmware and enabled "Link Aggregation" on my Arris T25 modem and Enabled WAN AGGREGATION on my Asus and all rebooted...  yes, IT NOW WORKS!!!!!!   Thank you Asus for fixing your WAN AGGREGATION issue!!   Hope anyone that finds this tries again with the latest firmware.

Problem Solver

 • 

770 Messages

3 years ago

Hello @StanMan09 it sounds like the speeds being delivered are in-line with what you subscribe to, but maybe running into some other networking issue. Have you tried to bypass the router, and run a test directly from the modem? Here are some other requirements to help.

 

Xfinity Internet Minimum System Requirements - For Speeds up to 1.2 Gigabit per second
Operating System Windows 10 (64 bit) or newer or Mac OSX 10.8 or newer. Visit the Microsoft Windows lifecycle fact sheet or Mac OS X Support overview for their latest operating system information.
Browser Google Chrome 56.0.2924, Microsoft Edge (64-bit), Mozilla Firefox 52 (64-bit) or Safari 8 or newer. For more information about different browsers or to download a new one, visit https://comca.st/3OxZWE5.
Ethernet Cable Cat5e or Cat6 Ethernet cable.

Note: Due to Ethernet overhead, actual download speeds are limited to 940 Mbps over a hardwired connection.

 

I can also take a look at the service to ensure the speeds are being delivered. If you still need help, send me a Private Message, and I will be happy to take a look. 👍

Visitor

 • 

3 Messages

3 years ago

Just looked at your specs, too bad you have the MB8600.... so I bet if you swap into the MB8611 modem which has 2.5Gig WAN like your router you will get the full 940.

Per the Xfinity comment, in this thread:

"Note: Due to Ethernet overhead, actual download speeds are limited to 940 Mbps over a hardwired connection."

I can confirm this to be true because I have tried DUAL WAN on my setup and configured my Dual WAN in load balanced 1:1 mode, and enabled Link Aggregation on my modem.  So TWO 1Gig ethernet cables from my modem to my router in this Dual WAN mode will provide right around 940-980 in a Ookla speed test .   If I am in single ethernet like your setup, I max out at 650.

(edited)

Expert

 • 

110K Messages

3 years ago

FWIW. I've seen posts here showing that dual WAN will yield speeds around 1400 Mbps. 1200 is the advertised speed, and Comcast does around a 20% speed over-provision. YMMV.

forum icon

New to the Community?

Start Here