Primary downstream channel Locked SC-QAM

[aikou]

Good afternoon.

I have recently moved to Giga1 and at first everything was running sweet. I have noticed that in the last few days my down is limited to around 250mb.

I run the hub in modem mode and connect through TP Link Deco. The PC that runs the tests is directly wired to the router.

Checking the status on the modem is can see that it is showing 

Primary downstream channel

Locked

SC-QAM

Please find screenshots below

I have powered down and rebooted both the modem and my Deco systems. I have also tried to use the online diagnostics 

Any assistance with this would be great

Thank you

Chris

[gary_dexter]

Post the Network, Upstream and Downstream logs from the hubs admin pages as text. Images won’t get approved. 

[aikou]

3.0 Downstream channels

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

25	331000000	1.2	39	QAM256	25
1	139000000	-0.1	39	QAM256	1
2	147000000	0	38.6	QAM256	2
3	155000000	0	40.4	QAM256	3
4	163000000	-0.2	38.6	QAM256	4
5	171000000	-0.3	39	QAM256	5
6	179000000	-0.4	40.4	QAM256	6
7	187000000	-0.3	39	QAM256	7
8	195000000	-0.2	40.4	QAM256	8
9	203000000	0	39	QAM256	9
10	211000000	0.2	39	QAM256	10
11	219000000	0.3	40.4	QAM256	11
12	227000000	0.4	40.4	QAM256	12
13	235000000	0.7	40.4	QAM256	13
14	243000000	0.6	40.9	QAM256	14
15	251000000	0.7	40.4	QAM256	15
16	259000000	1.4	40.4	QAM256	16
17	267000000	1.4	40.4	QAM256	17
18	275000000	1.4	40.4	QAM256	18
19	283000000	1.2	40.4	QAM256	19
20	291000000	1	40.4	QAM256	20
21	299000000	1.6	40.4	QAM256	21
22	307000000	1.6	40.4	QAM256	22
23	315000000	1.5	40.9	QAM256	23
24	323000000	1.3	39	QAM256	24
26	339000000	1.4	40.4	QAM256	26
27	347000000	1.4	40.4	QAM256	27
28	355000000	1.3	40.4	QAM256	28
29	363000000	1.4	40.4	QAM256	29
30	371000000	1.4	40.4	QAM256	30
31	379000000	1.4	40.4	QAM256	31

3.0 Downstream channels

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

25	Locked	38.983261	0	0
1	Locked	38.983261	0	0
2	Locked	38.605377	0	0
3	Locked	40.366287	0	0
4	Locked	38.605377	0	0
5	Locked	38.983261	0	0
6	Locked	40.366287	0	0
7	Locked	38.983261	0	0
8	Locked	40.366287	0	0
9	Locked	38.983261	0	0
10	Locked	38.983261	0	0
11	Locked	40.366287	0	0
12	Locked	40.366287	0	0
13	Locked	40.366287	0	0
14	Locked	40.946209	0	0
15	Locked	40.366287	0	0
16	Locked	40.366287	0	0
17	Locked	40.366287	0	0
18	Locked	40.366287	0	0
19	Locked	40.366287	0	0
20	Locked	40.366287	0	0
21	Locked	40.366287	0	0
22	Locked	40.366287	0	0
23	Locked	40.946209	0	0
24	Locked	38.983261	0	0
26	Locked	40.366287	0	0
27	Locked	40.366287	0	0
28	Locked	40.366287	0	0
29	Locked	40.366287	0	0
30	Locked	40.366287	0	0
31	Locked	40.366287	0	0

3.1 Downstream channels

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

33

96

4K

1880

QAM4096

424

3.1 Downstream channels

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

33

Locked

42

1.9

83331815

1096

[aikou]

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	39400000	44	5120 KSym/sec	64QAM	4
2	46200000	43.8	5120 KSym/sec	64QAM	3
3	53700000	44.3	5120 KSym/sec	64QAM	2
4	60300000	44.5	5120 KSym/sec	64QAM	1

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	0	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

[gary_dexter · Accepted solution]

Nothing amiss there.

Is QOS disabled on the TP-Link?

When you say wired direct to the router I assume you mean the Deco?

[aikou]

Hello Gary, 

Thank you for that reply. 

I didn't realise I had that active on the Deco and it was set to 350 down and 40 up.

Turned off and speeds have returned to what I expect.

For clarity yes I was plugged directly into the Deco.

Thank you again