Regular Visitor
•
6 Messages
Uncorrrectable codewords/jitter/lag problems
Hi there.
I've been having problems on and off recently that included elevated jitter levels via testing on speedtest.net along with lagging issues while gaming(eg.mortal kombat mobile), occasional upload decrease, buffering on youtube and consistent uncorrectables that reappear after each reboot I do which is anywhere between 1 day and 1 week apart. When the codewords do settle down and no errors found the connection is consistent.
Over the past few months my overall download power levels at any given time have ranged somewhere anywhere between 0.0 to -11 dbmV. Quite a few times the difference between the lower and higher frequencies may be be 6-10 db apart. SNRs on UL and DL have been ok for most part as far as can tell. Each time when I notice changes with my connection performance I can see changes in gateway that reflect a change in signals, etc.
I have included the current Upstream, Downstream, and Codewords info below.
I have the Xb6 gateway in bridge mode and it's connected via ethernet to my Eero 5 mesh wifi pod system which is up to date on software. The issue persists independent of eero as well.
Could someone please check my levels and see if they need to be adjusted remotely, if noise in line, node, etc? Thanks in advance! 👍
XB6 GATEWAY INFO
Initialization Procedure
Cable Modem
|
Downstream
|
Channel Bonding Value | ||||||||||||||||||||||||||||||||
| Index |
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
159
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
| Frequency |
393 MHz
|
399 MHz
|
405 MHz
|
411 MHz
|
417 MHz
|
423 MHz
|
429 MHz
|
435 MHz
|
447 MHz
|
453 MHz
|
459 MHz
|
465 MHz
|
471 MHz
|
477 MHz
|
483 MHz
|
489 MHz
|
495 MHz
|
507 MHz
|
513 MHz
|
519 MHz
|
525 MHz
|
531 MHz
|
537 MHz
|
543 MHz
|
549 MHz
|
555 MHz
|
561 MHz
|
567 MHz
|
573 MHz
|
579 MHz
|
585 MHz
|
591 MHz
|
690000000
|
| SNR |
41.5 dB
|
41.7 dB
|
41.6 dB
|
41.8 dB
|
41.5 dB
|
41.0 dB
|
40.8 dB
|
40.1 dB
|
39.8 dB
|
39.5 dB
|
39.6 dB
|
40.2 dB
|
40.4 dB
|
40.5 dB
|
40.5 dB
|
40.6 dB
|
40.7 dB
|
39.8 dB
|
38.9 dB
|
38.8 dB
|
38.5 dB
|
38.5 dB
|
38.5 dB
|
39.0 dB
|
39.3 dB
|
39.7 dB
|
39.3 dB
|
40.3 dB
|
40.3 dB
|
40.7 dB
|
40.6 dB
|
40.3 dB
|
39.1 dB
|
| Power Level |
0.3 dBmV
|
0.8 dBmV
|
1.5 dBmV
|
1.6 dBmV
|
0.9 dBmV
|
0.6 dBmV
|
-1.6 dBmV
|
-3.0 dBmV
|
-3.6 dBmV
|
-3.9 dBmV
|
-3.7 dBmV
|
-2.1 dBmV
|
-1.4 dBmV
|
-1.3 dBmV
|
-1.0 dBmV
|
0.2 dBmV
|
0.6 dBmV
|
-2.1 dBmV
|
-4.0 dBmV
|
-4.6 dBmV
|
-5.4 dBmV
|
-5.4 dBmV
|
-5.7 dBmV
|
-4.8 dBmV
|
-3.8 dBmV
|
-2.7 dBmV
|
-3.3 dBmV
|
-1.5 dBmV
|
0.4 dBmV
|
0.6 dBmV
|
0.5 dBmV
|
0.4 dBmV
|
-3.3 dBmV
|
| Modulation |
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
OFDM
|
|
Channel Bonding Value |
|||||
| Index |
1 |
2 |
3 |
4 |
5 |
|
|---|---|---|---|---|---|---|
| Lock Status |
Locked |
Locked |
Locked |
Locked |
Locked |
|
| Frequency |
35 MHz |
29 MHz |
22 MHz |
16 MHz |
40 MHz |
|
| Symbol Rate |
5120 |
5120 |
5120 |
5120 |
2560 |
|
| Power Level |
38.5 dBmV |
38.5 dBmV |
39.0 dBmV |
39.5 dBmV |
40.5 dBmV |
|
| Modulation |
QAM |
QAM |
QAM |
QAM |
QAM |
|
| Channel Type |
ATDMA |
ATDMA |
ATDMA |
ATDMA |
ATDMA |
|
| CM Error Codewords | |||||||||||||||||||||||||||||||||
| Index |
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
33
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unerrored Codewords |
3938710162
|
2034704750
|
2034715543
|
2034729179
|
2034732372
|
2034736301
|
2034755167
|
2034763110
|
2034839148
|
2034854921
|
2034861598
|
2034869183
|
2067649767
|
2067655564
|
2067663257
|
2067672838
|
2067773898
|
2067775770
|
2067786336
|
2067794613
|
2067795071
|
2067799895
|
2067815158
|
2067821432
|
2067829423
|
2067834320
|
2067846423
|
2067852611
|
2067861461
|
2067864073
|
2067840575
|
2067874438
|
3938710162
|
| Correctable Codewords |
3358413593
|
9701
|
9882
|
10724
|
11461
|
12195
|
13098
|
14315
|
14981
|
15063
|
14455
|
13178
|
12698
|
13231
|
14217
|
14773
|
15854
|
19291
|
21406
|
19570
|
21561
|
24967
|
25275
|
23121
|
24244
|
24151
|
23175
|
22705
|
24226
|
26957
|
29147
|
33656
|
3358413593
|
| Uncorrectable Codewords |
6624905
|
539
|
519
|
590
|
672
|
914
|
829
|
900
|
1228
|
1288
|
1280
|
864
|
885
|
883
|
894
|
880
|
774
|
1227
|
2031
|
1431
|
1937
|
2796
|
2707
|
1810
|
1994
|
1839
|
1512
|
1451
|
1422
|
1444
|
1417
|
1700
|
6624905
|
EG
Expert
•
118.3K Messages
4 years ago
The signal levels can not be "adjusted remotely". It requires a *boots on the ground / physical intervention*.
That said. The signal levels at that snapshot in time were good. But you should not be seeing such wide intermittent swings in those levels. You also described a condition of what is known as being *cable tilt* (a large difference of the power levels between the lower and the higher channel frequencies). Something is going on somewhere with the line(s) / connection quality.
You should get a tech out to investigate and correct this problem.
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. And if the problem is found to be on their side of the demarcation point, there will not be any charge.
Good luck with it !
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0
user_e368fc
Visitor
•
1 Message
4 years ago
Eero Pro 6 user, over the last month my mesh system has become more and more unstable and no longer able to reach my blast speed limit of 939mb/s DL and 43mb/s UL that I religiously had since I got blast maybe a year ago (can't remember). I've cracked the mystery. It's Eero and I will be calling them to discuss this problem. PROOF YOU SAY? take your xfinity supplied modem/router combo off bridge mode and unplug your gateway Eero router connected to modem for it to reset. The Eero Pro (haven't used mine for a while) may require you to change something in the Eero app to turn off DHCP or router functionality which disables the wifi mesh of your system and turns your Eeros into AP or access points. In that setting my Xfinity Blast hits max speed 24/7 on my gateway Eero and my whole network is 100% stable just like the old days when my Eero mesh system was activated and running. Now when i run my mesh system it is stable for about an hour and then all hell breaks look. I was on the phone with eero yesterday but fell asleep cuz i'd been up for like 36 hours messing with a new xfinity router install because i thought it was to blame but sadly no it is Eero itself. Turn off bridge mode and run your network without your mesh for a lil bit while Eero gets this sorted out as I will be calling them and it got worse with a recent software update for compatibility with Eero Plus and 6E hardware.
1
0
XfinityChristina
Official Employee
•
923 Messages
4 years ago
Hi, @UnderShadeTree. We can definitely get a technician out to investigate the line and local area. Can you please send us a direct message with your name and address to get us started?
To send a direct message, please click on the chat icon in the top-right corner of the screen, and select "Xfinity Support" to initiate a live chat.
Click "Sign In" if necessary
Click the "direct messaging" icon or https://comca.st/3Dh6pz3
Click the "New message" (pencil and paper) icon
Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
Type your message in the text area near the bottom of the window
Press Enter to send it
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