Slow Speeds on XB7

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sm30
I Plan to Stick Around
Posts: 23

Re: Slow Speeds on XB7

Has anyone who have been experiencing slower speeds with the XB7 gotten a resolution?

 

I have also been experiencing slower speeds switching from the CODA-4582 to the XB7 modem. My modem is currently in bridge mode and I have done all testing with a wired connection directly to the XB7 modem. I was getting average 950 Mb/s with the CODA modem. Now I am averaging 250-300 Mb/s on the XB7. I have been back and forth with a few managers from the tech department for a month now and they all have said they have not heard of any customers having slower speeds with the XB7. Would it be possible for the moderators @CommunityHelps to forward this issue with slow speeds from this thread to the appropriate management office for the tech managers?

 

Here are my current modem stats:

 

Downstream - Channel Bonding Value

Index
12
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
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
621 MHz
279 MHz
849 MHz
855 MHz
861 MHz
579 MHz
585 MHz
591 MHz
597 MHz
603 MHz
609 MHz
615 MHz
633 MHz
639 MHz
645 MHz
651 MHz
657 MHz
663 MHz
669 MHz
675 MHz
681 MHz
687 MHz
693 MHz
699 MHz
705 MHz
711 MHz
717 MHz
723 MHz
825 MHz
831 MHz
837 MHz
843 MHz
350000000
SNR
41.1 dB
41.4 dB
40.2 dB
40.3 dB
40.3 dB
41.2 dB
41.3 dB
41.2 dB
41.0 dB
40.9 dB
41.3 dB
41.2 dB
40.9 dB
40.7 dB
40.5 dB
40.4 dB
40.1 dB
40.1 dB
40.0 dB
39.5 dB
40.1 dB
39.9 dB
39.9 dB
40.1 dB
39.9 dB
39.9 dB
39.9 dB
39.8 dB
39.8 dB
40.1 dB
39.9 dB
40.0 dB
NA
Power Level
0.7 dBmV
0.5 dBmV
0.8 dBmV
0.5 dBmV
0.7 dBmV
0.4 dBmV
0.4 dBmV
0.4 dBmV
0.6 dBmV
0.7 dBmV
0.4 dBmV
0.6 dBmV
-1.1 dBmV
-1.3 dBmV
-1.6 dBmV
-1.6 dBmV
-1.7 dBmV
-1.7 dBmV
-1.9 dBmV
-1.7 dBmV
-1.9 dBmV
-2.1 dBmV
-2.1 dBmV
-2.0 dBmV
-2.3 dBmV
-2.2 dBmV
-1.9 dBmV
-2.1 dBmV
-1.3 dBmV
-1.0 dBmV
-1.0 dBmV
0.9 dBmV
NA
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

 

Upstream - Channel Bonding Value

Index
1
2
3
4
Lock Status
Locked
Locked
Locked
Locked
Frequency
21 MHz
25 MHz
32 MHz
38 MHz
Symbol Rate
2560
5120
5120
5120
Power Level
35.5 dBmV
36.5 dBmV
37.3 dBmV
36.5 dBmV
Modulation
QAM
QAM
QAM
QAM
Channel Type
TDMA_AND_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
408133749
477406688
477413432
477419897
477426195
477433093
477439282
477446212
477451768
477459116
477464718
477471098
477477676
477483896
477490226
477493724
477500132
477505764
477513419
477520716
477525475
477532182
477537849
477543924
477550307
477557319
477564308
477571387
477576833
477583669
477586596
477588582
408133749
Correctable Codewords
19666466
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19666466
Uncorrectable Codewords
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-G-
Resident Expert
Resident Expert
Posts: 2,497

Re: Slow Speeds on XB7

@sm30  Your upstream and downstream stats are all normal and your error stats are totally clean.  I don't think the "NA" on your downstream OFDM channel is anything to worry about, especially if the Unerrored and Correctable Codewords counters are incrementing.  I am also seeing "NA" for the SNR and Power Level stats on the downstream OFDM channel as well on my XB6, as are every other customer who has recently posted stats from their Ignite gateway.  The high number of Correctable Codewords on the OFDM channel is also totally normal, and actually a good thing.

 

If you are seeing full speeds with Bridge Mode disabled on your XB7, then you can make a good case for @CommunityHelps  to create a ticket and escalate it to the appropriate support teams for further investigation.

 

Tagging @RogersGordon  who once also confirmed similar issues with the Technicolor XB6.



sm30
I Plan to Stick Around
Posts: 23

Re: Slow Speeds on XB7

@CommunityHelps@RogersGordon, can this please be escalated to the appropriate support teams for further investigation? I haven't been contacted by either party yet.

RogersMoin
Moderator
Moderator
Posts: 2,012

Re: Slow Speeds on XB7

Hello, @sm30.

 

Thank you for your patience, we can help further troubleshoot and submit a ticket for you to have the issue investigated. Please send us a private message at @CommunityHelps. You can find details about our private messaging in this blog

 

Cheers,

RogersMoin

Draconix
I Plan to Stick Around
Posts: 14

Re: Slow Speeds on XB7

So the Unerrored and Correctable Codewords are normal, but should I be concerned with this high amount of Uncorrectable Codewords?

 

CM Error Codewords  
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
3761816603
2883287216
2883293390
2883295888
2883304866
2883309537
2883317088
2883322551
2883328873
2883333974
2883340593
2883347243
2883353739
2883357185
2883363043
2883369590
2883375742
2883382207
2883387662
2883395204
2883402074
2883407622
2883411954
2883407044
2883408806
2883423654
2883430394
2883435204
2883440508
2883445779
2883448342
2883455770
3761816603
1500755844
48
14
7
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4492
2632
0
0
0
0
636
1310
91
1500755844
0
30
26
28
60
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4064
6275
0
0
0
0
784
1745
28
0

 

My speeds have gone down significantly since switching from the CODA-4582 to the XB6.

-G-
Resident Expert
Resident Expert
Posts: 2,497

Re: Slow Speeds on XB7


@Draconix wrote:

So the Unerrored and Correctable Codewords are normal, but should I be concerned with this high amount of Uncorrectable Codewords?


I don't think that this is something that you should get too alarmed about.  You are still seeing zero Uncorrectables on your D3.1 downstream channel, which is good.  How concerned you should be all depends on whether those Uncorrectable error counts continue to grow, and at what rate.  Right now, those uncorrectables on the D3.0 channels are still a tiny, tiny fraction of the overall traffic, and your D3.1 channel is clean.

 

I my case, I'm used to seeing zero (or almost zero) uncorrectables across all channels.  Then I may suddenly see a bunch of uncorrectables appear in the stats.  (It could simply be due to a noise spike.)  I will keep an eye on those counters and if the number of Uncorrectable errors continues to increase, I will take note.  If they continue to increase at a high rate, I will report it to Rogers.  If they stay where they are, I will reboot my modem to zero the counters.

 

The error rates could likely also increase when the hot summer weather hits.



Draconix
I Plan to Stick Around
Posts: 14

Re: Slow Speeds on XB7

Alright thank you, I appreciate the info and I'll keep an eye on the stats. I reboot my modem and router once a week, so once everything is back to 0 I'll easily be able to see if the errors come back. I should note that I previously had all zeroes but then a technician came to check on the signal to see why my speeds are lower, and he did something outside that made those Uncorrectable Codewords start appearing.

-G-
Resident Expert
Resident Expert
Posts: 2,497

Re: Slow Speeds on XB7

@Draconix  Do you have Bridge Mode enabled on your XB7 (and using your own router) or are you running in a default configuration, in "gateway mode" with Bridge Mode disabled?



Draconix
I Plan to Stick Around
Posts: 14

Re: Slow Speeds on XB7

I started with an XB7 but switched to an XB6. Also yes I am using Bridge Mode connected to my Asus RT-AC86U.

-G-
Resident Expert
Resident Expert
Posts: 2,497

Re: Slow Speeds on XB7

@Draconix  I don't know what could be causing your slow speeds.  It could be a Rogers network issue, modem software bugs, some other issue involving your own equipment, or all of the above.  Rogers also does not tell us if they are actively tracking any issues.

 

I would advise disabling Bridge Mode on your XB6, disconnecting your router, and perform a speed test with a computer connected directly to the XB6 gateway over Ethernet.  If you get full speeds in this configuration, at least you can rule out a Rogers network issue.  If you still continue to see slow speeds, then Rogers will also be a better position to troubleshoot the problem and escalate issues internally for further investigation.