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Comcast XFINITY → Got upgraded to 50/10 in the ATL, lost upstream bonding

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« momentary internet issues-help. • [Wi-Fi] Wi fi 20mb wired is 55. What am i missing »
GTFan
join:2004-12-03
Austell, GA

GTFan

Member

2013-Mar-30 3:55 pm

Got upgraded to 50/10 in the ATL, lost upstream bonding

Anyone else seeing this? Getting 50+ down but only 7 up, presumably because there's only 1 upstream channel now (was 3 before the speed boost). I have a 6120 w/Blast, modem power reset doesn't get the old channels back. Have 4 down/1 up now, was 4/3.
· actions · 2013-Mar-30 3:55 pm ·
travelguy
join:1999-09-03
Bismarck, ND

travelguy

Member

2013-Mar-30 4:04 pm

You might start with the upstream power levels at your modem. They won't tell you what signal the CMTS is seeing, but if they are above 50 it's pretty good odds that you have a noise problem between your modem and the CMTS.
· actions · 2013-Mar-30 4:04 pm ·
GTFan
join:2004-12-03
Austell, GA

GTFan

Member

2013-Mar-31 10:49 am

Power and signal levels are fine, it's not that.
· actions · 2013-Mar-31 10:49 am ·

Johkal
Cool Cat
MVM
join:2002-11-13
Pennsyltucky

Johkal to GTFan

MVM

2013-Mar-31 12:35 pm

to GTFan
If all is correct at your end, it could very well be an issue at the CMTS.
· actions · 2013-Mar-31 12:35 pm ·

CableConvert
Premium Member
join:2003-12-05
Atlanta, GA

CableConvert to GTFan

Premium Member

2013-Mar-31 2:32 pm

to GTFan
Click for full size
I have 4 down and 2 up in ATL. Every time I look it seems my downstream power levels go down
· actions · 2013-Mar-31 2:32 pm ·
mojo1
join:2006-12-05
Victoria, TX

mojo1 to GTFan

Member

2013-Mar-31 9:16 pm

to GTFan
For the longest time, I had 4 down and 2 up here in Atlanta. After the upgrade I am now seeing 3 upstream channels.
· actions · 2013-Mar-31 9:16 pm ·
bonk27
join:2011-12-30
Salem, OR

bonk27 to GTFan

Member

2013-Mar-31 10:48 pm

to GTFan
try a factory reset
· actions · 2013-Mar-31 10:48 pm ·

EG
The wings of love
Premium Member
join:2006-11-18
Union, NJ

EG to GTFan

Premium Member

2013-Apr-1 2:06 pm

to GTFan
Call in and inquire about your uSNR (upstream Signal to Noise Ratio) figure. It should be at least 30 dB, and higher is better.
· actions · 2013-Apr-1 2:06 pm ·
GTFan
join:2004-12-03
Austell, GA

GTFan to bonk27

Member

2013-Apr-8 8:19 am

to bonk27
said by bonk27:

try a factory reset

Tried that, didn't work. I guess I could call about upstream SNR but I had upstream bonding before the 50/10 upgrade (for months) and my signal levels on the modem are excellent otherwise. I lost the bonding after the reboot to pick up the new speed config.

It's probably a headend misconfiguration.
· actions · 2013-Apr-8 8:19 am ·

baineschile
2600 ways to live
Premium Member
join:2008-05-10
Sterling Heights, MI

baineschile to GTFan

Premium Member

2013-Apr-8 9:15 am

to GTFan
Why is one at 64QAM and the other at 16QAM?
· actions · 2013-Apr-8 9:15 am ·

EG
The wings of love
Premium Member
join:2006-11-18
Union, NJ

EG

Premium Member

2013-Apr-8 11:30 am

"Why is one at 64QAM and the other at 16QAM?

That's normal. Legacy 16QAM carriers are present on the system for backwards compatibility for older DOCSIS 1.x modems. Channels of differing modulation schemes and symbol rates can be and are indeed bonded.
· actions · 2013-Apr-8 11:30 am ·
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