gatordan1982's profile

Sun, Nov 29, 2020 7:00 PM

Intermittent connectivity issues

I've got an issue with the internet connection.  I've got a new DOCSIS 3.1 modem (Arris SB8200), and new router (Netgear Orbi RBK752).  I'm seeing some issues with webpages failing to load at first, for a second or two, and then connecting to the page.  Also, there's some intermittent dropping of my work VPN connection.  I've check the modem logs, and there's some issues on here.  I'm hoping I can get some help figuring out where the problem might be - wiring, modem, router, firmware, etc.  


Here's the screen caps of what I see on the modem.  Can anybody help?







87K Messages

6 m ago

The upstream power too high / 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 a self troubleshooting 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 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

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.

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2 Messages

6 m ago

Hi There.  Thanks for responding about the upload power issue. 


I made a block diagram for my connections.  There's NO splitters in the line, except for a drop amplifier (maybe this is the problem?).  All the coax wiring is a "home run" connection from this drop amplifier to their respective wall outlets.  The modem is just connected from the wall plate with one cable direct to the modem.  All the cables are RG6 from that first coupler, and basically everything inside the house. 


Here's the drop amp data sheet.


I made a block diagram showing the connections, with a couple images from the two key connections (coupler, and drop amp).  Let me know if you see anything majorly wrong with this.

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