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Upgraded from 350 to 1GB Speed, but slower than old speed.

farske
On our wavelength

Hiya

I updated 2 months ago to the superfast 1GB speed, and got the upgraded hub 4.

I use Router Modem Mode to -> Archer C7 -> Wired to PC.

I have a few connected devices and WAPs but my testing and troubleshooting is done from my main PC.

I have a mixture of Cat 5e and Cat 6 cables so they shouldn't influence any speed issues.

I upgrade to 1Gig so I'm wondering why I pay more for less performance.

My speed tests before were often nearer the top range of my last package, but now it fluctuates and seems to be even slower at times and I'm wondering if it has some other setting issue.

It seems on average to be the old sped, or slower.

I've seen some success, but the posts result in PMs and solutions, so I'm holding out hope!

Thanks!

All info requested from the main community page below:

Info from Hub 4 Status.

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status
Online
DOCSIS 3.1
Primary downstream channel
Locked
SC-QAM
DOCSIS 3.0 channels
31
4
DOCSIS 3.1 channels
1
0

 

Primary Downstream Service Flow

SFID
89692
Max Traffic Rate
1200000450
Max Traffic Burst
42600
Min Traffic Rate
0



Primary Upstream Service Flow

SFID
89691
Max Traffic Rate
55000270
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort

 

See next post reply.

1 ACCEPTED SOLUTION

Accepted Solutions


@farske wrote:

Downstream

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

253310000009.00000036.609653QAM25625
11390000006.30000334.925610QAM2561
21470000006.19999734.925610QAM2562
31550000006.40000235.779911QAM2563
41630000006.69999735.595078QAM2564
51710000006.90000235.779911QAM2565
61790000007.09999835.595078QAM2566
71870000007.30000335.779911QAM2567
81950000007.30000335.779911QAM2568
92030000007.19999735.779911QAM2569
102110000007.40000236.386890QAM25610
112190000007.59999836.386890QAM25611
122270000007.59999836.609653QAM25612
132350000007.50000035.595078QAM25613
142430000007.30000335.595078QAM25614
152510000007.30000335.083549QAM25615
162590000007.80000335.083549QAM25616
172670000007.90000235.779911QAM25617
182750000007.90000235.595078QAM25618
192830000007.40000235.595078QAM25619
202910000007.59999835.083549QAM25620
212990000009.50000036.386890QAM25621
2230700000010.00000036.609653QAM25622
233150000009.50000036.386890QAM25623
243230000009.30000336.609653QAM25624
263390000009.19999736.386890QAM25626
273470000009.69999737.355988QAM25627
283550000009.50000036.386890QAM25628
293630000009.30000335.779911QAM25629
303710000009.69999736.609653QAM25630
313790000009.59999836.386890QAM25631



3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25Locked36.6096531959170
1Locked34.9256107262670
2Locked34.9256107067090
3Locked35.7799116857230
4Locked35.5950785229460
5Locked35.7799114260960
6Locked35.5950784046980
7Locked35.7799113535490
8Locked35.7799113406060
9Locked35.7799113621720
10Locked36.3868903256400
11Locked36.3868902767990
12Locked36.6096532891360
13Locked35.5950784101410
14Locked35.5950784854160
15Locked35.0835495145540
16Locked35.0835495318840
17Locked35.7799114368980
18Locked35.5950783981010
19Locked35.5950785965520
20Locked35.0835496549350
21Locked36.3868902088060
22Locked36.6096531386450
23Locked36.3868901849330
24Locked36.6096531789670
26Locked36.3868901766860
27Locked37.3559881203330
28Locked36.3868901500300
29Locked35.7799112165120
30Locked36.6096531828660
31Locked36.3868901997220



3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33964K1880QAM4096424


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
33Locked3810.31251279755501145

 

 


Your downstream power levels are high, the DOCSIS 3.1 channel is technically out of spec (-6 to +10 in spec, 0bB being optimal)

The other concern is the Uncorrectables, highlighted, which you shouln't have any at all.

SNR is all over the place also.

Plenty of T3 timeouts also.

Looks like a noisy line.

One thing you can check is to ensure QOS isn't enabled on your Archer as it could be limiting the speed based on your old connection speed.

See where this Helpful Answer was posted

23 REPLIES 23

farske
On our wavelength

Downstream

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

253310000009.00000036.609653QAM25625
11390000006.30000334.925610QAM2561
21470000006.19999734.925610QAM2562
31550000006.40000235.779911QAM2563
41630000006.69999735.595078QAM2564
51710000006.90000235.779911QAM2565
61790000007.09999835.595078QAM2566
71870000007.30000335.779911QAM2567
81950000007.30000335.779911QAM2568
92030000007.19999735.779911QAM2569
102110000007.40000236.386890QAM25610
112190000007.59999836.386890QAM25611
122270000007.59999836.609653QAM25612
132350000007.50000035.595078QAM25613
142430000007.30000335.595078QAM25614
152510000007.30000335.083549QAM25615
162590000007.80000335.083549QAM25616
172670000007.90000235.779911QAM25617
182750000007.90000235.595078QAM25618
192830000007.40000235.595078QAM25619
202910000007.59999835.083549QAM25620
212990000009.50000036.386890QAM25621
2230700000010.00000036.609653QAM25622
233150000009.50000036.386890QAM25623
243230000009.30000336.609653QAM25624
263390000009.19999736.386890QAM25626
273470000009.69999737.355988QAM25627
283550000009.50000036.386890QAM25628
293630000009.30000335.779911QAM25629
303710000009.69999736.609653QAM25630
313790000009.59999836.386890QAM25631



3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25Locked36.6096531959170
1Locked34.9256107262670
2Locked34.9256107067090
3Locked35.7799116857230
4Locked35.5950785229460
5Locked35.7799114260960
6Locked35.5950784046980
7Locked35.7799113535490
8Locked35.7799113406060
9Locked35.7799113621720
10Locked36.3868903256400
11Locked36.3868902767990
12Locked36.6096532891360
13Locked35.5950784101410
14Locked35.5950784854160
15Locked35.0835495145540
16Locked35.0835495318840
17Locked35.7799114368980
18Locked35.5950783981010
19Locked35.5950785965520
20Locked35.0835496549350
21Locked36.3868902088060
22Locked36.6096531386450
23Locked36.3868901849330
24Locked36.6096531789670
26Locked36.3868901766860
27Locked37.3559881203330
28Locked36.3868901500300
29Locked35.7799112165120
30Locked36.6096531828660
31Locked36.3868901997220



3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33964K1880QAM4096424


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
33Locked3810.31251279755501145

 

 

farske
On our wavelength

 

CONFIG

 

General Configuration

Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
cmreg-vmdg640-bbt076+voc-b.cm

 

UPSTREAM

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
16030000045.0205995120 KSym/sec64QAM1
23940000044.0205995120 KSym/sec64QAM4
35370000044.5205995120 KSym/sec64QAM2
44620000044.2705995120 KSym/sec64QAM3


3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1US_TYPE_STDMA0050
2US_TYPE_STDMA00100
3US_TYPE_STDMA0070
4US_TYPE_STDMA00110

 

Network Log (I did try resetting it with the tool prior to this post)

Network Log

Time Priority Description

Mon Jan 31 10:20:43 20223SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 31 10:20:48 20225Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;


@farske wrote:

Downstream

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

253310000009.00000036.609653QAM25625
11390000006.30000334.925610QAM2561
21470000006.19999734.925610QAM2562
31550000006.40000235.779911QAM2563
41630000006.69999735.595078QAM2564
51710000006.90000235.779911QAM2565
61790000007.09999835.595078QAM2566
71870000007.30000335.779911QAM2567
81950000007.30000335.779911QAM2568
92030000007.19999735.779911QAM2569
102110000007.40000236.386890QAM25610
112190000007.59999836.386890QAM25611
122270000007.59999836.609653QAM25612
132350000007.50000035.595078QAM25613
142430000007.30000335.595078QAM25614
152510000007.30000335.083549QAM25615
162590000007.80000335.083549QAM25616
172670000007.90000235.779911QAM25617
182750000007.90000235.595078QAM25618
192830000007.40000235.595078QAM25619
202910000007.59999835.083549QAM25620
212990000009.50000036.386890QAM25621
2230700000010.00000036.609653QAM25622
233150000009.50000036.386890QAM25623
243230000009.30000336.609653QAM25624
263390000009.19999736.386890QAM25626
273470000009.69999737.355988QAM25627
283550000009.50000036.386890QAM25628
293630000009.30000335.779911QAM25629
303710000009.69999736.609653QAM25630
313790000009.59999836.386890QAM25631



3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25Locked36.6096531959170
1Locked34.9256107262670
2Locked34.9256107067090
3Locked35.7799116857230
4Locked35.5950785229460
5Locked35.7799114260960
6Locked35.5950784046980
7Locked35.7799113535490
8Locked35.7799113406060
9Locked35.7799113621720
10Locked36.3868903256400
11Locked36.3868902767990
12Locked36.6096532891360
13Locked35.5950784101410
14Locked35.5950784854160
15Locked35.0835495145540
16Locked35.0835495318840
17Locked35.7799114368980
18Locked35.5950783981010
19Locked35.5950785965520
20Locked35.0835496549350
21Locked36.3868902088060
22Locked36.6096531386450
23Locked36.3868901849330
24Locked36.6096531789670
26Locked36.3868901766860
27Locked37.3559881203330
28Locked36.3868901500300
29Locked35.7799112165120
30Locked36.6096531828660
31Locked36.3868901997220



3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33964K1880QAM4096424


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
33Locked3810.31251279755501145

 

 


Your downstream power levels are high, the DOCSIS 3.1 channel is technically out of spec (-6 to +10 in spec, 0bB being optimal)

The other concern is the Uncorrectables, highlighted, which you shouln't have any at all.

SNR is all over the place also.

Plenty of T3 timeouts also.

Looks like a noisy line.

One thing you can check is to ensure QOS isn't enabled on your Archer as it could be limiting the speed based on your old connection speed.

Hi Carl,
Thanks for taking the time to look into it and highlight some issues.

I'll double-check QOM now.

Is there anything else I can amend here, or is this going to be down to VM?


@farske wrote:
Hi Carl,
Thanks for taking the time to look into it and highlight some issues.

I'll double-check QOM now.

Is there anything else I can amend here, or is this going to be down to VM?

VM will need to arrange an engineer visit to check over your connection.

Will I be Pm'd and contacted and arranged based off this post do you think?
I cant imagine trying to ring and book an engineer.


@farske wrote:
Will I be Pm'd and contacted and arranged based off this post do you think?
I cant imagine trying to ring and book an engineer.

VM will reply to this thread, however it can take a few days to a week.

...and then around another week for the actual appointment.

farske
On our wavelength
Haha, oh my.

Ok,maybe I'll get lucky 😄