Also experiencing 10-30 Mb/s with Premier, I have a DOCSIS 3.0 modem (Motorola SB6141)

First, do you have the computer connected directly to the modem? If so, try checking the connection rate of your local area connection;

Windows key + R > NCPA.CPL > Right click on "Local area connection" and left click on status > Look for where it says rate or speed.

Also, did you recently upgrade service to premier or get the SB6141 added to your account?

I am using Mac OSX. My network utility reports being connected on my wireless adapter at 300 Mbit/s. 

To give you an idea of my network, I have my Motorola SB6141 connected to my Linksys E4200. Its firmware is updated and tested at full speeds (over 50 Mb/s) at my last address on Verizon, which was about 2 months ago. That configuration did not include the Motorola modem.

I purchased the Motorola modem before connecting with Cox and reported it when I started my service. I've had premier since the beginning as well.

Ok, so it doesn't sound like it's a service code issue. That only occurs on upgrades of either modem or service. 

Have you tried connecting the Mac directly to the SB6141? Even though it may have worked in the previous location with a different ISP, there could be local wireless interference issues. Its best to first isolate if its a issue Cox > modem or modem > router, etc. 

To that end, could you also post your entire modem's signal levels off that signal tab? The levels in the OP only look to be the partial levels. You should have atleast 4 downstream channels, and if not, that is probably the problem. See here for a picture of what I mean.

I would definitely like to connect my laptop directly to the ethernet port on my wireless router, but I don't have an adapter and there's no ethernet port on my laptop. There is definitely a chance for wireless interference. I am using 5 Ghz to try to reduce that as much as possible.

Here are the signal levels from my modem:

Thats not right. With only 1 downstream channel, your capped at about 24-27Mbps. Could you do a reboot and post the logs from after the boot? That might explain what's causing it to fail to lock onto the other channels, since your general signal levels look good.

Also, do you happen to have a white SB6141? And do you happen to live in Arkansa? Might be unrelated, but seems similar to another thread from about a week ago.

I do have a white modem, but I do not live in Arkansas. I'm in Virginia.

I rebooted and it looks like still only one stream. Here's the report:

Oh I meant the diagnostic logs, which you should be able to get from the "logs" tab on the same page. See here for a picture. 

Be sure to remove the CM-MAC info though before you post, since this is unique and private to your account.

Sorry about that!

I see some T3's and T4's on May 13th, I assume this is when the modem was installed? If not, anything noteworthy about that date?

Other than that, the logs don't look to reveal any clues on the channel bonding. Your downstream power level is a bit on the high side, and while still good I wonder if that has anything to do with it. Do you have any kind of signal amplifier? History of electrical ground issues? Any strange cable wiring configuration in the house?

It might be a good idea to get a moderator to look at your modem too. They can check firmware and other things that might be useful. Or if anyone else has any ideas, the floor is open. 

That was when the modem was installed, correct. 

I live in an apartment complex, but inside my apartment there are no splitters, amplifiers, or anything like that. I haven't had any other problems with grounding, but I haven't tested it and haven't lived here long. The complex or building might have strange wiring in the closet that I cannot see.

How can I get a moderator to look as well?

Thanks for all your help, by the way!!

I think Moderator Allan is on duty right now, but since we have been discussing it he probably doesn't know his expertise is required. I won't post anymore on this thread for a while so it stands out on the forum. You can also send a email ATT; Moderator to cox.help@cox.com and reference this thread. Hope things work out and feel free to update when you find your solution or have more questions.

Hello ColleenD,

Yes, please do anything you need to do. I'm headed to bed and won't need the internet until tomorrow afternoon. Thank you!