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Only getting around 30Mbps Download on Premier
Hi. I got a little web-based alert from Cox saying I should upgrade my modem to DOCSIS 3.0 which is weird because it already is. That said, it got me rooting around my modem logs and checking my speeds and I found that I only have 4 downstream bonding channels instead of 8 and running a speed check shows I'm getting around 29-30 Mbps down and 12Mbps up.
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modestermix
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12 Messages
Model Name: SB6121
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.14-SCM01-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
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Health_Edge
Valued Contributor III
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4.2K Messages
What model modem do you have? Probably Cox needs to adjust the service code on your account for the new DOCSIS 3.0 modem.
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modestermix
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Motorola SB6121
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Health_Edge
Valued Contributor III
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4.2K Messages
First thing I notice is the SB6121 is only a 4x4 channel modem, so you will never get 8 downstream channels with it. For that you would need the SB6141. I think the main issue is your missing a certain code on your account that unlocks the full speed of DOCSIS 3.0 modems. If a moderator doesn't respond here soon, I would suggest calling in and asking them to change it.
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modestermix
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Ok, the 4x4 bit makes sense. Will give them a call and see what happens if no one stops by.
Thanks for your help!
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ChrisL
Former Moderator
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7.1K Messages
I've looked at your account and it is correctly setup for DOCSIS 3.0 already. Are you testing your speeds with a wireless-G connection by chance? They're limited to about 25-30Mbps under ideal conditions.
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modestermix
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It's a wireless-N router so it should be good to go.
I just got off the phone and direct connection to the modem is, in fact, getting me 110Mbps. Connecting back to the router it goes right back down to the 30Mbps. So...I guess it's a router issue.
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ChrisL
Former Moderator
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7.1K Messages
The router may be N but are you testing your connection wireless and if so what kind of wireless is the device you're testing with using? While your router may be N if the device is using G for example you'll only see G speeds on wireless
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modestermix
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Using Intel(R) Centrino(R) Advanced-N 6235 wi-fi adapter
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ChrisL
Former Moderator
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@modestermix Before completely dumping the blame on the router I'd suggest testing with a different N device and/or testing your laptop on another N or better router to see which way the problem goes. Something else I thought of too, make sure you're not using WPA-TKIP encryption as how it's only compatible with wireless-G and will force your wireless link rates down.
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modestermix
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Looks like I've got WPA2/WPA Mixed mode for my wireless security? Should that be changed?
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Health_Edge
Valued Contributor III
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WPA vs WPA2 doesn't matter, as long as it has AES encryption and not TKIP. Looks your card can do 802.11a/g/n 2x2 and 2.4/5 GHz, so that "should" be enough, but there are alot of variables. This article does a pretty good job describing it, specailly on page 9.
You also want to check your radio (Mixed, G only, N only, etc) and match it to your needs. If you don't have any G devices, and don't plan on getting any, its generally better to put the router on N only.
:;Edit:: Forgot to add link. Oops
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modestermix
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Messing around with settings on the router (Set security to WPA2 Personal, 5Ghz, wireless-N only) I've juiced it up to 61 Mbps on my Mac. Certainly an improvement.
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MichaelJ
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modestermix
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My Macbook Air is now showing up to 82Mbps (with my kids watching Netflix!) but other devices (PC running Win7, Samsung Galaxy S3) are still in the 30-40Mbps range. Guess I'll read up on what the specs are in the Air's wireless adapter...
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