2 Messages
New user, internet speed is very slow
I started the 300M internet service two days ago. Using the xFi gateway.
99% of the time, the speed is very slow, around 10Mbps. Only seen once or twice it goes up to ~50Mbps. Very frustrated.
Checked the pinned post on how to troubleshoot. Here is the signal levels. It looks to me the uncorrectable codewords is very high (after gateway restarted two minutes ago). And the upstream power level is high.
Anyone can help take a look?
Thanks.
|
Downstream
|
Channel Bonding Value | |||||||||||||||||||||||||||||||||
| Channel ID |
20
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
33
|
34
|
35
|
36
|
37
|
38
|
39
|
40
|
41
|
42
|
43
|
44
|
193
|
194
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Not locked
|
Not locked
|
Not locked
|
Not locked
|
Not locked
|
Not locked
|
Locked
|
Locked
|
Locked
|
Not locked
|
Not locked
|
Not locked
|
Locked
|
Not locked
|
Not locked
|
Locked
|
Locked
|
Not locked
|
Not locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
| Frequency |
495 MHz
|
453 MHz
|
459 MHz
|
465 MHz
|
471 MHz
|
477 MHz
|
483 MHz
|
489 MHz
|
501 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
|
597 MHz
|
603 MHz
|
609 MHz
|
615 MHz
|
621 MHz
|
627 MHz
|
633 MHz
|
639 MHz
|
722000000
|
957000000
|
| SNR |
43.7 dB
|
31.9 dB
|
29.4 dB
|
29.3 dB
|
26.8 dB
|
34.2 dB
|
40.7 dB
|
37.0 dB
|
0.0 dB
|
0.0 dB
|
0.0 dB
|
0.0 dB
|
0.0 dB
|
0.0 dB
|
35.6 dB
|
36.7 dB
|
28.5 dB
|
0.0 dB
|
0.0 dB
|
0.0 dB
|
26.9 dB
|
0.0 dB
|
0.0 dB
|
29.7 dB
|
26.3 dB
|
0.0 dB
|
0.0 dB
|
36.9 dB
|
33.3 dB
|
30.0 dB
|
33.2 dB
|
36.3 dB
|
0.0 dB
|
26.4 dB
|
| Power Level |
-6.1 dBmV
|
-17.3 dBmV
|
-19.8 dBmV
|
-22.0 dBmV
|
-18.8 dBmV
|
-13.5 dBmV
|
-9.9 dBmV
|
-7.6 dBmV
|
-7.6 dBmV
|
-8.8 dBmV
|
-10.4 dBmV
|
-12.0 dBmV
|
-12.6 dBmV
|
-13.7 dBmV
|
-14.4 dBmV
|
-15.2 dBmV
|
-15.2 dBmV
|
-14.5 dBmV
|
-14.4 dBmV
|
-14.8 dBmV
|
-14.8 dBmV
|
-14.7 dBmV
|
-14.3 dBmV
|
-13.0 dBmV
|
-11.1 dBmV
|
-11.2 dBmV
|
-13.5 dBmV
|
-15.3 dBmV
|
-15.9 dBmV
|
-16.6 dBmV
|
-16.8 dBmV
|
-16.3 dBmV
|
-10.6 dBmV
|
-22.4 dBmV
|
| Modulation |
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
Unknown
|
Unknown
|
Unknown
|
256 QAM
|
Unknown
|
Unknown
|
256 QAM
|
256 QAM
|
256 QAM
|
Unknown
|
Unknown
|
Unknown
|
256 QAM
|
Unknown
|
Unknown
|
256 QAM
|
256 QAM
|
Unknown
|
Unknown
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
OFDM
|
OFDM
|
*Channel ID 20 is the Primary channel
|
Upstream
|
Channel Bonding Value | |||||
| Channel ID |
17
|
18
|
19
|
20
|
43
|
|
|---|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
|
| Frequency |
16 MHz
|
22 MHz
|
29 MHz
|
35 MHz
|
36 MHz
|
|
| Symbol Rate |
5120
|
5120
|
5120
|
5120
|
0
|
|
| Power Level |
54.5 dBmV
|
54.5 dBmV
|
54.5 dBmV
|
54.5 dBmV
|
48.5 dBmV
|
|
| Modulation |
QAM
|
QAM
|
QAM
|
QAM
|
OFDMA
|
|
| Channel Type |
ATDMA
|
ATDMA
|
ATDMA
|
ATDMA
|
TDMA
|
|
| CM Error Codewords | ||||||||||||||||||||||||||||||||||
| Channel ID |
20
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
33
|
34
|
35
|
36
|
37
|
38
|
39
|
40
|
41
|
42
|
43
|
44
|
193
|
194
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unerrored Codewords |
1558856
|
5804724
|
6106951
|
4373688
|
1717609
|
6557712
|
6566672
|
6576891
|
0
|
0
|
0
|
61
|
0
|
0
|
6617864
|
6673510
|
6620833
|
0
|
0
|
0
|
2753880
|
0
|
0
|
6742645
|
733792
|
0
|
0
|
6841568
|
5016576
|
2939126
|
4724452
|
6931730
|
1519619
|
1558856
|
| Correctable Codewords |
361711
|
3895
|
14964
|
22485
|
142022
|
3121
|
2868
|
2422
|
0
|
0
|
0
|
0
|
0
|
0
|
1910
|
1917
|
6939
|
0
|
0
|
0
|
3689776
|
0
|
0
|
2033
|
3557977
|
0
|
0
|
1987
|
440324
|
640912
|
595675
|
2235
|
498152
|
361711
|
| Uncorrectable Codewords |
1197142
|
10848
|
14115
|
14272
|
8325
|
7763
|
6916
|
5699
|
0
|
0
|
0
|
0
|
0
|
0
|
3926
|
3637
|
4839
|
0
|
0
|
0
|
203810
|
0
|
0
|
3094
|
2444394
|
0
|
0
|
4157
|
855251
|
1978028
|
1402741
|
4848
|
1021005
|
1197142
|
user_yeyjbf
2 Messages
28 days ago
And sometimes the internet drops
1
0
BruceW
Gold Problem Solver
•
26K Messages
28 days ago
The signal values posted are terrible. Network connection problems like this are often due to poor coax connections or damaged coax cable, usually in or near your home. Running the cable through a surge protector, a defective splitter, or too many splitters can cause signal problems as well. If there is an amplifier in the line make sure it's getting power.
If you can't find the problem or you'd rather have Comcast take care of it and an employee does not respond to your message here, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. It's not likely they can fix the problem remotely. If not, insist they send a tech out to identify the cause and correct it.
If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit (approx $100) unless you have their Service Protection Plan ( https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device or anything outside your home you shouldn't be charged.
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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