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GTFan

join:2004-12-03

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.

travelguy

join:1999-09-03
Santa Fe, NM
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.

GTFan

join:2004-12-03
Power and signal levels are fine, it's not that.


Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
kudos:10
reply to GTFan
If all is correct at your end, it could very well be an issue at the CMTS.


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

mojo1

join:2006-12-05
Atlanta, GA
reply 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.

bonk27

join:2011-12-30
Salem, OR
reply to GTFan
try a factory reset


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10
reply 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.

GTFan

join:2004-12-03
reply 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.


baineschile
2600 ways to live
Premium
join:2008-05-10
Sterling Heights, MI
reply to GTFan
Why is one at 64QAM and the other at 16QAM?


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10
"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.