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Upstream Performance Issue

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Upstream Performance Issue

I subscribe to the Extreme 150 service and have regularly had consistent download speeds of 160 to 180 Mbps and upload speeds of 20 to 24 Mbps.  Back in November, I saw a drop within a very short window where the download speeds were generally "acceptable" (went as low as 1.01 Mbps), but the upload speeds were reduced to ~4Mbps (with some days as low as 0.80 Mbps).  Since then, I have not been able to record a speed higher than 6.5 Mbps. I have had multiple technicans out with the last one actually taking my modem to the tap at the street and reproducing the same reduced performance.  This was helpful as it removed any wiring or conectivity probelsm within my house.  These results triggered maintenance to come out and they identified "noise" coming from some of my neighbors that was beign fed back into the sytem.  They made some changes and indicated the signals all looked good and performance should be improved.   In the last week, the download performance has been relatively solid, but the upload speed has not changed (maxing out at ~5 Mbps).  Below are the technical details of my gateway and signals.  Does anyone have a suggested next step to resolve the poor upload performance and get back to the usual 24 Mbps?  What could be causing this issue?  I did notice that on the upload signal, one of the channels does not seem to be locking/bonding and also was told my tech support that it appears my uSNR for one of the ports was way off at 13.8 vs ~35 for the other three (does not seem to be showing in the information available to me or listed below).  I also noticed the upstream is reporting DOCSIS 2.0 instead of 3.0 even thogh 3.0 is supposed to be availabel in my Atlatna suburb and the gateway supports 3.0.

 

Thank you in advance!

 

 

Initialization Procedure

Initialize Hardware:Complete
Acquire Downstream Channel:Complete
Upstream Ranging:Complete
DHCP bound:Complete
Set Time-of-Day:Complete
Configuration File Download:Complete
Registration:Complete

 

Cable Modem

HW Version:11.0
Vendor:ARRIS Group, Inc.
BOOT Version:4.2.0.45
Core Version:10.1.11
Model:TG1682G
Product Type:XB3
Flash Part:256 MB
Download Version:10.1.11.SIP.PC20.CT
 
 
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
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
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Frequency
465.00 MHz
471.00 MHz
477.00 MHz
483.00 MHz
489.00 MHz
495.00 MHz
501.00 MHz
507.00 MHz
513.00 MHz
519.00 MHz
525.00 MHz
531.00 MHz
537.00 MHz
543.00 MHz
555.00 MHz
567.00 MHz
573.00 MHz
579.00 MHz
585.00 MHz
591.00 MHz
597.00 MHz
603.00 MHz
609.00 MHz
615.00 MHz
               
SNR
37.36 dB
36.39 dB
37.36 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
36.61 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
37.36 dB
37.36 dB
               
Power Level
-3.30 dBmV
-4.30 dBmV
-3.40 dBmV
-4.00 dBmV
-3.40 dBmV
-4.30 dBmV
-3.40 dBmV
-4.10 dBmV
-3.60 dBmV
-4.10 dBmV
-3.30 dBmV
-3.70 dBmV
-3.20 dBmV
-3.20 dBmV
-3.20 dBmV
-3.20 dBmV
-3.50 dBmV
-3.50 dBmV
-3.80 dBmV
-3.70 dBmV
-3.80 dBmV
-3.10 dBmV
-3.20 dBmV
-3.10 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

 

Upstream
Channel Bonding Value
Index
1
2
3
4
5
6
7
8
Lock Status
Locked
Locked
Not Locked
Locked
Not Locked
Not Locked
Not Locked
Not Locked
Frequency
36.40 MHz
15.70 MHz
22.80 MHz
29.60 MHz
       
Symbol Rate
5120 KSym/s
5120 KSym/s
0 KSym/s
5120 KSym/s
       
Power Level
44.50 dBmV
45.00 dBmV
0.00 dBmV
44.25 dBmV
       
Modulation
64 QAM
64 QAM
QPSK
64 QAM
       
Channel Type
DOCSIS2.0 (ATDMA)
DOCSIS2.0 (ATDMA)
(Unknown)
DOCSIS2.0 (ATDMA)
 
 

 

CM Error Codewords
Unerrored Codewords
657468148
1233098927
1233098312
1233085844
1233095732
1233090095
1233098119
1233102655
1233107051
1233114716
1233136909
1233122443
1233125611
1233110033
1233117684
1233124836
1233121801
1233123828
1233131373
1233131805
1233140332
1233149497
1233135687
1233140762
0
0
0
0
0
0
0
0
Correctable Codewords
20138
17951
20855
23515
24221
27063
25558
23659
23516
21358
18917
17573
18189
19641
21212
21184
18648
19678
21068
21522
18265
19807
19932
20213
0
0
0
0
0
0
0
0
Uncorrectable Codewords
114177
126890
136589
147874
141167
144239
142248
142160
138829
142576
130422
150163
147232
145102
146126
140123
146666
147972
148416
151852
146619
152241
155892
151226