Hello yall, Ive checked through and cannot seem to find anything regarding this, but if its been asked/answered please forward along...
Ive noticed a lot of Uncorrectables lately, just trying to figure out what would be considered 'acceptable'? See snapshot below:
Running a CM2000 with GT-AX6000 Asus router on latest Merlin fw
Cable Diagnostic
Status: Good
Action: Your setup looks fine. If you can't access the internet, make sure you properly activated the modem. If modem has been activated and you still can't access the internet, contact your service provider for troubleshooting help. If you can access the internet but has other internet issue, theNetgear Cable Knowledge Basecan provide additional troubleshooting info.
CM Status:
Downstream Status:
Upstream Status:
RefreshSave Cable Diagnostic Info
Advanced Information
Frequency Start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
Startup Procedure
Procedure
Status
Comment
Acquire Downstream Channel
447000000 Hz
Locked
Connectivity State
OK
Operational
Boot State
OK
Operational
Security
Enabled
BPI+
IP Provisioning Mode
Honor MDD
IPv6 only
Downstream Bonded Channels
Channel
Lock Status
Modulation
Channel ID
Frequency
Power
SNR
Correctables
Uncorrectables
1
Locked
QAM256
4
447000000 Hz
2.3 dBmV
42.5 dB
118
286
2
Locked
QAM256
1
429000000 Hz
2.7 dBmV
42.7 dB
93
268
3
Locked
QAM256
2
435000000 Hz
2.4 dBmV
42.6 dB
67
289
4
Locked
QAM256
3
441000000 Hz
2.2 dBmV
42.5 dB
85
291
5
Locked
QAM256
5
453000000 Hz
2.3 dBmV
42.4 dB
73
297
6
Locked
QAM256
6
459000000 Hz
2.5 dBmV
42.5 dB
67
300
7
Locked
QAM256
7
465000000 Hz
2.7 dBmV
42.6 dB
63
293
8
Locked
QAM256
8
471000000 Hz
2.7 dBmV
42.7 dB
96
278
9
Locked
QAM256
9
477000000 Hz
3.0 dBmV
42.8 dB
64
307
10
Locked
QAM256
10
483000000 Hz
3.1 dBmV
42.8 dB
92
290
11
Locked
QAM256
11
489000000 Hz
3.1 dBmV
42.7 dB
88
293
12
Locked
QAM256
12
495000000 Hz
3.0 dBmV
42.7 dB
70
301
13
Locked
QAM256
13
507000000 Hz
3.0 dBmV
42.8 dB
93
286
14
Locked
QAM256
14
513000000 Hz
3.0 dBmV
42.8 dB
89
281
15
Locked
QAM256
15
519000000 Hz
2.8 dBmV
42.7 dB
101
294
16
Locked
QAM256
16
525000000 Hz
2.7 dBmV
42.7 dB
109
281
17
Locked
QAM256
17
531000000 Hz
2.5 dBmV
42.6 dB
67
298
18
Locked
QAM256
18
537000000 Hz
2.5 dBmV
42.6 dB
112
307
19
Locked
QAM256
19
543000000 Hz
2.4 dBmV
42.5 dB
112
298
20
Locked
QAM256
20
549000000 Hz
2.4 dBmV
42.5 dB
116
295
21
Locked
QAM256
21
555000000 Hz
2.3 dBmV
42.4 dB
89
294
22
Locked
QAM256
22
561000000 Hz
2.7 dBmV
42.6 dB
117
280
23
Locked
QAM256
23
567000000 Hz
2.8 dBmV
42.6 dB
106
308
24
Locked
QAM256
24
573000000 Hz
2.8 dBmV
42.6 dB
100
297
25
Locked
QAM256
25
579000000 Hz
3.1 dBmV
42.7 dB
104
303
26
Locked
QAM256
26
585000000 Hz
3.0 dBmV
42.7 dB
125
301
27
Locked
QAM256
27
591000000 Hz
3.1 dBmV
42.7 dB
118
301
28
Locked
QAM256
28
597000000 Hz
3.0 dBmV
42.6 dB
141
294
29
Locked
QAM256
29
603000000 Hz
2.8 dBmV
42.4 dB
133
318
30
Locked
QAM256
30
609000000 Hz
2.7 dBmV
42.4 dB
153
313
31
Locked
QAM256
31
615000000 Hz
2.5 dBmV
42.2 dB
166
331
32
Locked
QAM256
32
621000000 Hz
2.7 dBmV
42.3 dB
136
345
Upstream Bonded Channels
Channel
Lock Status
US Channel Type
Channel ID
Symbol Rate
Frequency
Power
1
Locked
ATDMA
20
5120 Ksym/sec
35600000 Hz
46.5 dBmV
2
Locked
ATDMA
18
5120 Ksym/sec
22800000 Hz
46.5 dBmV
3
Locked
ATDMA
19
5120 Ksym/sec
29200000 Hz
46.5 dBmV
4
Locked
ATDMA
17
5120 Ksym/sec
16400000 Hz
46.8 dBmV
5
Locked
ATDMA
21
2560 Ksym/sec
40400000 Hz
47.0 dBmV
6
Locked
ATDMA
22
2560 Ksym/sec
10400000 Hz
47.0 dBmV
7
Not Locked
Unknown
0
0
0
0.0 dBmV
8
Not Locked
Unknown
0
0
0
0.0 dBmV
Downstream OFDM Channels
Channel
Lock Status
Profile ID
Channel ID
Frequency
Power
SNR / MER
Active Subcarrier Number Range
Unerrored Codewords
Correctable Codewords
Uncorrectable Codewords
1
Locked
0 ,1 ,2 ,3
193
702000000 Hz
3.78 dBmV
42.1 dB
1108 ~ 2987
535234855
13721999
0
2
Not Locked
0
0
0 Hz
0 dBmV
0 dB
0 ~ 4095
0
0
0
Upstream OFDMA Channels
Channel
Lock Status
Modulation / Profile ID
Channel ID
Frequency
Power
1
Not Locked
0
0
0 Hz
0 dBmV
2
Not Locked
0
0
0 Hz
0 dBmV
Extended Upstream Transmit Power
Youve guys have always been very helpful, so any info/advise is greatly appreciated!
After doing some extensive research (I use that term loosely ;) I have found out the following:
1) Based on my numbers, my SNR is very much within spec, as are my power levels. From what Ive gathered, my amount of uncorrectables over the course of X amount of days is nothing to worry about, since I am not seeing and speed/connection issues. And all those uncorrectables may have been brought on by some sort of maintenence, or the like.
2) There is a thing called FEC Forward Error Correction, which is normal and operates by correcting the correctable codewords, so any amount of correctable's just means that the FEC is working as intended
Hope this helps anyone else, and If I misspoke/jumbled something up , please let me know.
Hello @jsav, thanks for reaching out with an update to your post!
I reviewed your original post and your updated solution and everything seems to be in order! Should you need assistance with anything else in the future, please don't hesitate to make a new post here. Our entire community is available to ensure you get the help you need.
I am an Official Xfinity Employee. Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation. Was your question answered? Please, mark a reply as the Accepted Answer.
Accepted Solution
jsav
8 Messages
2 years ago
After doing some extensive research (I use that term loosely ;) I have found out the following:
1) Based on my numbers, my SNR is very much within spec, as are my power levels. From what Ive gathered, my amount of uncorrectables over the course of X amount of days is nothing to worry about, since I am not seeing and speed/connection issues. And all those uncorrectables may have been brought on by some sort of maintenence, or the like.
2) There is a thing called FEC Forward Error Correction, which is normal and operates by correcting the correctable codewords, so any amount of correctable's just means that the FEC is working as intended
Hope this helps anyone else, and If I misspoke/jumbled something up , please let me know.
Thanks
J
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