Visitor
•
4 Messages
Lost MDD Timeout on Arris SB6190
So a few months back I was getting T3 errors on a Netgear modem/router combo and my speeds were abysmal (I'm paying for 400 Mbps but was getting 10 or below). A tech came and checked things out, and wanted to move the modem to a different room since there was potentially something wrong with the cabling. But before we did that, I had him provision another modem I have (Arris Sb6190). Speedtests were showing speeds back to normal (400 Mbps+) and things worked great for a couple months. I've been having speed trouble again and rebooting devices does not resolve the issue. Here's what my downstream channels look like:
And here's the Event log for today:
Is there anything else I can do to troubleshoot or should I just schedule a tech to come onsite?
EG
Expert
•
110K Messages
2 years ago
Your post with that pic of the error log entries was marked as being "Private" by the forum software because it contains CM MAC and the CMTS MAC addresses. They are considered to be personal information. The posting of personally identifiable information is a violation of their forum guidelines. Please delete that pic only.
What you can do instead is to copy and paste all of the text (instead of using an image) but you'll need to redact all of the CM MAC and CMTS MAC addresses. The forum bot will not allow your post to be seen publically.
Please also post the upstream power level values.
0
0
racoonconnection
Visitor
•
4 Messages
2 years ago
[Edited: "Language"] That's what I get for posting before having my morning coffee. I've redacted all the CM MAC and CMTS MAC addresses and reuploaded the image.
(edited)
0
0
EG
Expert
•
110K Messages
2 years ago
@racoonconnection
Upstream power levels ?
(edited)
1
0
EG
Expert
•
110K Messages
2 years ago
Everything either is close to being or is 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, abrasions, 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 !
1
EG
Expert
•
110K Messages
2 years ago
No. I'm talking about the signals / power levels / connection quality between the Comcast system and the modem. 99% that it's a coax line problem somewhere.
0
0