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Yep. Without even seeing the upstream power level figure(s) or the SNR(s), that is way out of spec !
Just bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home. Good luck !
We need detail information about your issue.
I ended up calling for assistance last evening since it was happening on several channels and others worked. The Technician finally corrected it after a coupe of resets.
Hi TheN8torious -- I reviewed your posts and messages with ComcastKenF. I have scheduled you a tech during your available hours. I have sent a PM with the time slot. Please let me know if that time slot will work ok for you.
There are RF signal / connection quality problems. Some downstream channels are not locked when they should be and some of the other SNR's are out of spec. You can try this stuff if it applies;
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.
Tech came...didn't take him long to identify that the installer (contracter supplied by xfinity) did not "cap" the end of one coax that was installed in case we get another tv. Xfinity tech checked out everything else as well, capped the open coax end, and things are working fine! So far, all the Xfinity techs we have encountered seem quite knowledgeable and helpful. BTW, don't know if he had anything to do with it, but we were discussing the timeframe for docsis 3.1 activation (I have an Arris SB8200, docsis 3.1). As he was driving away, my downstream switched to 3.1. I believe upstream will happen in the future.
Hello auntbear6. I can assist with your Comcast Wireless Gateway Router concerns. I have reviewed the settings and diagnostics of the modem and I can see everything appears to be set correctly. I verified you have a secured WiFi connection.
I see the modem you have is one of our best models available. If however, you want to replace the modem, we can free of charge. Please let me know if this is something you are interested in.
As an alternative option, we can also perform a factory reset of the device to ensure the network names and passcodes are reset to factory defaults.
If you are using a Comcast supplied gateway device, and if it hasn't been changed from its default value, it is on a label on the bottom, back, or the side. It may be called the "Password" or the "Network Key" on that label.
Last night, the half time renew was successful and right on time. I have cut and pasted your solution here and added one step for the Netgear router:
My guess is your spoofing the MAC address and the DHCP Server is not liking it.. I would try this...
You should be getting the same IP as long as your device is online, as long as your router responds to the DHCP half-time and renew request.
I believe the the Netgear router is not consistently forming the DCHP renew request correctly when it is configured to MAC spoof. I had a thread going in their community on this issue and described the problem and suggested they investigate.
Thanks so much for your help.