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Download speed consistently slower than upload speed
I have been getting download speeds about two thirds of my upload speeds recently.
I thought it might be due to an old out of date modem i had, so I updated the modem to the new-ish motorola SBG6782.
Resulting in the same download slower than upload ( as measured on coxs speed test and others ).
Some forum surfing showed that there may be a "service code" that needs to be set from somebody from cox when a modem gets changed?
Also, coxs initial web intercept / new modem registration screen doesn't recognize the SBG6782 even though it is on the compatible modems list. ( I used my correct serial and hfc mac numbers, but had to tell the system it was a SB6141 to get connectivity.
Any mods able to do a line check, or send one of these codes down the line?
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Health_Edge
Valued Contributor III
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4.2K Messages
The config file problem effected those who had premier with a D2 modem and upgraded to a D3 modem. Do you have premier? Did you have a D2 modem before the SBG6782?
The SBG6782 is a gateway. Are you replacing a gateway or was your old modem a stand alone (like a SB6141). If you also have a router then a SBG6782 won't work unless you configure it in a specail way, so its probably easier(and better) if you just use a normal modem.
What are you signal levels? You should be able to find them at http://192.168.0.1 and then Status > Connection. For more info see page 19-20 of this manual.
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KipK
Former Moderator
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606 Messages
Signal levels look alright, they're fluctuating a bit over time but not alarmingly, and I show 0 packet loss to the modem.
As gateways go, the SBG6782 is pretty nice, but our first question always has to be whether you're running the speed test on a wireless or a wired connection.
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J_A
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It is a wired connection, ethernet, not usb.
The problem seems to be aggravated by distance, the further away a server is the worse it gets, nearby servers - not so much
recent tests on coxs own speedtest:
Start Download Speed Upload Speed Latency Your IP Address Cox Market
Mon Dec 02 09:52 PM Yes 15 Mbps 20 Mbps 134 millisec 72.213.x.x Hampton Roads
Mon Dec 02 09:51 PM Yes 13 Mbps 21 Mbps 118 millisec 72.213.x.x Oklahoma City
Mon Dec 02 09:49 PM Yes 9 Mbps 11 Mbps 162 millisec 72.213.x.x Omaha
Mon Dec 02 09:48 PM Yes 13 Mbps 6 Mbps 175 millisec 72.213.x.x Providence
Mon Dec 02 09:47 PM Yes 10 Mbps 16 Mbps 191 millisec 72.213.x.x Orange County
Mon Dec 02 09:46 PM Yes 11 Mbps 11 Mbps 144 millisec 72.213.x.x Baton Rouge
Mon Dec 02 09:44 PM Yes 11 Mbps 13 Mbps 192 millisec 72.213.2x.x Las Vegas
Mon Dec 02 09:43 PM Yes 17 Mbps 15 Mbps 94 millisec 72.213.x.x New Orleans
Thu Nov 28 10:43 PM Yes 11 Mbps 16 Mbps 166 millisec 72.213.x.x San Diego
Thu Nov 28 10:42 PM Yes 18 Mbps 16 Mbps 97 millisec 72.213.x.x Atlanta
IP #s manually x'd out.
other speed test sites are similar, distant servers having download 2/3rds to 3/4ths the upload speeds (sometimes very fast uploads around 24mbps)
I might be able to copy/paste some signal strength info the modems status screen can display if that would help?
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Health_Edge
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Yes, signal levels from the modem would help.
Latency looks high. Try this test? If latency is high overall I will reply with commands to trace.
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J_A
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The statuses listed show the connection state of the cable modem contained within the SBG6782-AC. They are used by your service provider to evaluate the operation of the cable modem.
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Health_Edge
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Signal levels look good. Upstream is kind of high, but I don't think that's actually causing your issue.
Wonder if the router part of the gateway is slowing something down. Or it could be a PC issue. Do you have another computer to try with? What were the speeds before you upgraded the modem and what other equipment were you using instead of the gateway. Basically looking for some context.
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J_A
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12-9-13 coxs own speed test:
Start Cox Net DownloadSpeed UploadSpeed Latency Your IPAddress Cox Market
Mon Dec 09 09:28 PM Yes 13 Mbps 15 Mbps 150 millisec 72.213.x.x San Diego
Mon Dec 09 09:27 PM Yes 17 Mbps 11 Mbps 149 millisec 72.213.x.x Providence
Mon Dec 09 09:26 PM Yes 0 Mbps 0 Mbps 155 millisec 72.213.x.x Providence
Mon Dec 09 09:26 PM Yes 12 Mbps 13 Mbps 140 millisec 72.213.x.x Hampton Roads
Mon Dec 09 09:24 PM Yes 17 Mbps 14 Mbps 125 millisec 72.213.x.x Omaha
Mon Dec 09 09:23 PM Yes 14 Mbps 13 Mbps 147 millisec 72.213.x.x Northern Virginia
Mon Dec 09 09:22 PM Yes 16 Mbps 16 Mbps 146 millisec 72.213.x.x Las Vegas
Mon Dec 09 09:21 PM Yes 13 Mbps 18 Mbps 116 millisec 72.213.x.x Baton Rouge
Mon Dec 09 09:20 PM Yes 13 Mbps 13 Mbps 92 millisec 72.213.x.x Kansas
Mon Dec 09 09:19 PM Yes 14 Mbps 18 Mbps 94 millisec 72.213.x.x New Orleans
Mon Dec 09 09:18 PM Yes 16 Mbps 14 Mbps 92 millisec 72.213.x.x Atlanta
So, problem is not just going away.
I can get these kind of download speeds from my cell phone, an unlimited data plan at that.
Gonna see if I can tether through a router and direct compare coxs performance.
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ChrisL
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J_A
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Ok, today downloads are faster than uploads.
Except everything is now as slow as dial up levels !
I'm getting sub mbps on nearly all coxs own speed test servers.
Net
Speed
Speed
Address
ip # x-d out manually.
I'm wondering how long this level of failure is going to continue.
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J_A
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Got more reasonable results this week, even though I didn't change anything.
Therefore, something must have changed on coxs end.
Net
Speed
Speed
Address
I'll keep checking to see if any consistency is maintained.
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J_A
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Looks like yesterdays more normal numbers may have been a fluke.
Today the modem reported it had connectivity to cox but no internet was getting through, even to cox.net.
I had to reboot the modem manually, the got the old downloads slower than uploads on coxs speed tests.
Net
Speed
Speed
Address
regarding the cox mods hints of scheduling a tech to come out: It is highly unlikely that I will ever be able to prearrange a date between x o'clock and y o'clock on any day other than on a weekend.
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