Frequent Visitor
•
18 Messages
SB6183 and just 1 channel up
Today my modem rebooted and afterwards I had all 16 channels bonded for download but just 1 channel for upload. New reboots didn't resolve the issue.
I contacted support (got dropped when they asked me to run a speedtest) and they said that everything is okay after changing the profile (?) without rebooting the modem afterwards. I get 450 Mbps on download and 12 Mbps upload with this 16x1 setup which is basically what I pay for.
I have seen quite a few uncorectable errors lately but I don't know if that is connected to this upload channel problem.
My fear is that
a) Comcast is no longer supporting DOCSIS 3.0 modems
b) during busy times I will not get my upload speed anymore as there is just one channel available.
How do I get my modem back to 16x4?
Thank you
EG
Expert
•
89.9K Messages
1 m ago
What do the modem's signal stats look like ? Try getting them here; http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
(edited)
0
0
urdypooh
Frequent Visitor
•
18 Messages
1 m ago
I rebooted this morning on the off chance that something might have changed and it did: I have all 4 upstream levels back.
1
0
EG
Expert
•
89.9K Messages
1 m ago
Everything is WAY out of spec !! That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In an effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1000 MHz, bi-directional, and no gold colored garbage from Radio Shack, Home Depot, Target, etc. Splitters should be swapped with known to be good / new ones to test.
Also check the coax cable for any damage such as cuts, nicks, kinks, sharp bends, etc.
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
Good luck with it !
0
0