06-14-2012 06:22 PM
I am a new customer and choose to have Xfinity Internet connection it was a great offer because I took also Cisco DPC3008 Cable Modem and Linksys E900 router all free (with mail in rebate).
When I connected with my modem it was great. My spead was ~25 mbbs. But wen I used the router and I checked my speed it was not even 1mbbs!!!
It was soooo slow. It took me a lot of energy and phone calles to fix it. And I found the solution in the knowing everything google.
Check it here:
06-14-2012 09:52 PM
You rock for posting this!! I saw a bunch of reviews that said the free equipment would not work with Comcast and was just doing speed tests noticing that everything was fine when I was hardwired in. Was about to be very frustrated with incompatible equipment and voila, I saw your message. Thanks so much for posting. Hope it helps alot of other folks. Maybe Comcast Customer Service can start offering this as a solution to troubleshoot, as well!!
06-16-2012 12:42 PM
Excellent information. I was wondering why so many folks with E900 were posting about speed problems. While the E900 is no speed demon, it should be able to keep up with your typical 20+Mbps Comcast connection as long as it's not overtaxed.
06-17-2012 09:29 AM
Thank you very much for posting this. My daughter was complaining about very slow download speeds with a Linksys E1200 router. The fix you posted worked and her download speed jumped from barely 1 Mbps to about 18 Mbps immediately.
06-28-2012 10:18 AM
I tried this and it did not work. I just bought 3 new toshiba laptops running a Intel(R) wifi link1000BGN.
After Applying this my old dell desktop would not even connect through a Hardwire. So I disconnected the linksys e900 and reconnected my old D-Link 615 and I connected with over 15mps download. When the e900 was connected I couldn't even get .32mps very painful. I spent over 30min on the phone with comcast.
and an hour with linksys support, plus over 3hour of my time trying different configurations. I too took advantage of the modem and router promo. Had comcast lay a new line directly to the modem no splitters or tv interference. Save your time and aggravation. Linksys had normally made a good product but they have booted this one. I will be getting my money back on this. The modem seems to work well.
07-03-2012 02:32 PM - edited 07-03-2012 02:33 PM
Thanks you so much for posting that fix....I spent almost an entire day reading and tinkering with my Belkin n120, returned it and bought a Linksys e1200, and STILL had the same issue. This simple fix was all it needed to get back to acceptable 25 Mbps download speeds.
07-04-2012 10:17 AM
I had a similar situation with my Dlink gaming router. I was getting crappy upload speeds. I turned off 'Gamefuel' and now my speeds are faster than ever.
07-09-2012 07:54 AM
This is my second post. I dumped the linksys e900 and bought a new Western Digitail N700
dual band. Solved all my problems. I now can run 4 computer all with wireless N. and stream Netflix
all at top speed of over 15mps. I made no major changes to any settings.
07-13-2012 09:59 PM
07-14-2012 09:14 PM
Great fix BUT how do you explain all the others that dont have to do that to get the expected speeds from there routers. Is this a issue with the e900 only ?? I have two routers ea4500 and wndr4500 and they dont do that.
07-15-2012 05:15 PM
After doing some research on this I found that if you disable WMM your router will no longer funtion with N, only A,G so if you have any N wireless cards or adapters they will only connect with 2.4 Ghz will be G and 5.0 Ghz will connect via A. Also the router speed will not go higher than 54 mbps not really a problem if you isp is that or less. Bottom line disabling WMM does help the download speeds that are 54 mbps or less but you have no N working at that point. (N must have WMM to funtion)
07-15-2012 05:25 PM - edited 07-15-2012 05:26 PM
Unfortunately your research is not correct. You may have read SmallNetbuilders old, old article which is not accurate. I have WWM off and my router is set for N only. I connect both computers at 300Mbps. I have a WNCE2001, Roku and Kindle fire all connected at N rates. My wireless transfer speed to my server downstairs is 82.5Mbps. Limited by my 100Mbps LAN connections on the router. The 54Mbps appears to be a myth.
07-15-2012 05:33 PM - edited 07-15-2012 06:02 PM
That is were i read that at but i also found other sites that say the same. Are you sure with WMM disabled you are connecting via N have you verified this? Most cards are backward compatable if they dont see N they will connect with A or G I have the ae2500 adapter for my desktop and it will not connect N on the 5.0GHZ band with WMM disabled when I enable it it connects via N and the speed goes up. This is a topic these router builders need to investigate further and inform us the buyers. Thanks for your input.
I just verified the fact it does not transmitt N when WMM is disabled. Bring up your wireless connection and put your mouse over your SSID and look at the radio type mine went from N to G after WMM was disabled.
07-15-2012 08:11 PM - edited 07-15-2012 08:13 PM
Yes verified, that's how I can transfer at 82.5Mbps wireless to my server with WMM disabled. Enabled, it is about half that... which is less than your 54Mbps. And yes Internet speed went from 12-14Mbps to 20-23Mbps when disabled. And yes... Radio Type 802.11N holding the mouse over the SSID.
07-15-2012 08:24 PM - edited 07-15-2012 08:24 PM
Running Netgear WNDR3400v2 with Linksys AE1000 USB adapter.
I also get the same connection speed using a WEC600N Linksys Express Card adapter.
I don't want to talk about my built in WiFi card in the laptop, now that sucks.
07-15-2012 08:34 PM
I get about 25 down and just under 4 up wired and through the EA-4500 using the laptop i get about 20 down and the same as wired going up just under 4. I dont know y they would make a router that slows the downstream so much by having wmm enabled. Maybe they will push a new firmware to fix that.
07-17-2012 11:08 PM
Dear god Angela you are a lifesaver! I have spent a week with Comcast trying to resolve acquiring my own Docsis 3modem while testing out blast over performance. With blast I was able to get 34Mbps wired but when using my wireless router it dropped to 16 which was even slower than what i was getting with my older Docsis 2 modem. taking your suggesting and diabling WMM support in my router just jumped my download speed to 35 Mbps on my laptop using the wireless router! You are a friggin genius--thank you!!
07-17-2012 11:34 PM
My download speed with Blast and a Motorola 6121 wireless router jumped from 16 Mbps to 36. Using my iphone my wireless download speed jumped from .6Mbps to 16!! Funny thing is--5 techs and 3 supervisors at Comcast didn't tell me this. I found it posted here in the forums.
08-08-2012 02:43 AM
Wow that was amazing, I tried calling comcast support and chat 3to 4 times.. they couldnt help me with that...at last i saw this thread and it was useful, Million thanks..
08-24-2012 10:30 PM
I had speed issues all the time with my comcast. This summer, I was somehow blessed with the decent speed and good image qualities when streaming videos, enjoying watching olympics etc.. But the luck ended all over sudden this week.
I have a different router (Medialink Wireless router) but I gave your fix a try, and it worked like a charm!!
Those of you having the speed issue with Medialink router, make sure to connect it directly with your PC using ethernet cable. Then find 'WMM capability' under "Advanced settings", and disable it. If you connect it wirelessly you won't find this options.
09-20-2012 11:21 PM
HOLY GUACAMOLE Angela, you just saved my sanity!!!!
I'm on my Mom's account, just moved back home after several years living on my own). My trusty 5 year old Netgear router died after a GA thunderstorm this summer. I went & bought a Linksys e1200 & set up the home network for Mom & I (2 windows desktop machines that are rarely used unless I'm editing my music) and 2 laptops - I have a MacBook Pro. All of a sudden my internet was equivalent to Compuserve via dial-up : SLOW.
Comcast said it was our modem, they came & replaced it. Then said it was our phone, came & re set it up (charged us $50 BOO!), then blamed our wires, came here & replaced a bunch. Six weeks weeks later I still have a SpeedTest.com score of .73 mbps. You know we're promised at least 12 and I didn't even get 1! I was starting to lose my marbles when I had to let a tv show or movie load for 3 hours before i could actually watch it.
Then I found this forum post. AND IT WORKED! I know I should have called but I damaged my vocal chords & could barely speak all summer. So instead, once I went upstairs I would just plug in my ethernet chord to the modem at night since Mom only goes online during the day - I didn't really rely on the router.
But now that I'm working more from home, I need to be able to listen to new records or watch an actors movie reels asap... this trick just brought my -1 mbps back up to 24mbps.
A HUNDRED THANK YOUS from me & Mom!!!
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