OFDMA Power = 57 too high?

Are you actually having any connection problems ? Please also post the downstream power values and the SNR's in their entirety.

Hi user_k7s922, thank you for visiting our awesome community here on the Forum. I'd love to work with you and get on the same page. Like @EG mentioned, can you please provide some insight into any connectivity issues you're experiencing? 

Thank you for the replies.

Was experiencing intermittent internet connection losses, where the XB7 modem was showing the red X next to internet (No Internet) while the wifi module was showing green check mark, but some wifi devices were still able to access the internet although some devices were not.  Checked modem using both the xfinity app and browser login.

Was wondering if it was a band issue as it looked like the 2.4 devices were the ones having the loss with 5gnhz still online. So i tried resetting the wifi module first, but later would have to do a total reset including restart of connected devices.

The device that gave me the most trouble was an xfinity flex tv box which connects via wifi for tv/dvr.  It looks like this may be a discontinued device.  But I couldn't figure out if it was trying to connect to 2.4 or 5ghz - I have both networks named the same. Seems like it would just try for the stronger signal and was outside my control. Sometimes it would work and other times it wouldn't even while my Fire Tv device running the xfinity stream app would work fine wirelessly for live channels and dvr.

After much fiddling I would usually get full connectivity again but it wouldn't last and would drop out again at random times.

So I looked on the forums here and read many of the excellent helpful posts from EG (THANK YOU). Logged in to the xb7 and the values seemed ok per the posted recommended levels for downstream and upstream power values and the SNR's except that they were borderline, i.e. just within range, except for OFDMA at 57.6 and 0 KSym/sec which looked potentially suspicious as the culprit so I posted that.

And then xfinity offered to:

a) send a technician to check the line drop from the pole 

b) swap the modem out for an XB8

c) increase the speed tier, I believe from 800 download up to 1200

I haven't logged into the new modem yet, but have experienced one "internet connection lost" message thus far since the recent change on the normally reliable Fire TV stick (4k max 2nd gen) using 5ghz band.

I can log in and post the latest power and Snr values.  Other information:

The modem is directly connected from the point of entry - no splitter - and it's a short rg6 run to the modem. There are no other coax connected devices. And no moca in use.

From the pole drop just before point of entry there is a single connection to a what looks like some type of filter - silver barrel shape, dont think it is moca, can look closer at it. Maybe it is an attenuator  Also the tech commented that the line is not properly grounded at the POE and could come back to do that.  I am assuming tech checked the line levels but wasn't there when he visited.

Thanks again for the feedback.

More from original poster:

Used the xfinity app remotely and am able to see the following:

Plan speed: 1100

Tested speed to gateway: 1309

Latency 14ms

Flex TV Box model is an Xi6 and shows as connected via 5ghz to the new xb8

I have one paused wifi device because I dont know what it is:

Generic Brand Vendor: AMPAK Technology

I presume it has nothing to do with the connection issues. Think it may be a blink device. Not sure.

Generic Brand Vendor: AMPAK Technology

New posted values are for the new XB8 model CGM4981COM

The upstream table got cut off - will repost

Also on the recent visit, it appears the tech added at the point of entry / incoming coax line an inline chrome barrel shaped connector with a printed label:

Digicomm 12SCVS12 Taiwan

Filter? Attenuator?

Update: Have had additional "lost internet connection" messages from fire tv stick in the last 24 hours.

The xfinity app test internet result was showing 35% of plan speed yo gateway and suggested gateway restart which then tested at range where it had been on prior testing:
115% (1304 of 1100).

Should upstream power be in the 40-45 range (from reading @EG posts) instead of mid 30's as I am seeing (with a low of 33 on ch43)? I was seeing high 40s upstream before the recent tech visit and modem swap. And ch 43 OFDMA was previously at 57.7 as originally posted and now down to 33.

Am wondering if the tech installed a 12db attenuator (based on the labeling), i.e. the new inline silver barrel added at poe?  Could post a photo of the newly added device if I can figure out how to post that, but it's a chrome cylinder with female and male coax screw ends and a few inches long. If so, should the attenuator instead be something ideally rated more in the 6-7db range not 12db?

Other change noticed is Wpa3 is in use now with the xb8 whereas it was wpa2 before with the xb7 but I don't suppose this is related the issues.

Still having dropout issues. The flex tv box is in fairly close proximity to the xb8 with only one wall inbetween. Is there a way to tell from the flex box xi6 menu what band it is connecting on - 2.4 or 5ghz? Is that an outdated model? Should I be moving to a new device / platform? I changed modem from xb7 to xb8.

Wondering if I should be looking instead at the wifi signals, but wondering first if the latest posted signal levels for the line to the gateway look good?

Thank you. Appreciate the input and feedback.

Also I believe the new rate tier xfinity moved the plan to is the one below - the "gigabit plan", but am only am able to get about half of the rated upload speed (20 vs 40). However the download speeds are exceeding 1100 - typically seeing 1300+ although sometimes it has been under 400 but jumps back up if I do a gateway reset and retest via the xfinity app.

Also it seems they may have moved the plan from one that was unlimited to one that is now capped. Not sure.

"GIGABIT Plan" description:

Typical download speed 1100 Mbps
Typical upload speed 40.52 Mbps
Typical latency 14.479 Milliseconds