Gig1 Slow Ethernet (half or worse)

[mcons]

Hi, we got an upgrade to Gig1 last week but we aren't getting Gig1 speeds.

Samknows reports speeds to the Super Hub 4 as perfect, in excess of 1000mbps but plugging in a device to ethernet (correct cable tested 5E and 2 different Cat6, 1gbps enabled on the NIC) it sits between 300 and 600mbps.

This was even worse when the hub was still in router mode. Since been switched to modem mode to use with Netgear router, but the fact of the matter is, ethernet connections are nowhere near 1gbps as I would expect.

We upgraded from 200mbps so could this be a power level issue? Barely getting double the speed. Speed tests zoom between 400 to 800 and then after the initial spike, lower down during the test closer to the 300/400 mbps mark. To be clear, this is ethernet.

[mcons]

Refresh data

3.0 Downstream channels

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

25	331000000	3.599998	40.366287	QAM256	25
1	139000000	1.400002	40.366287	QAM256	1
2	147000000	1.599998	40.366287	QAM256	2
3	155000000	1.700001	40.946209	QAM256	3
4	163000000	1.799999	40.366287	QAM256	4
5	171000000	2.200001	40.366287	QAM256	5
6	179000000	2.200001	40.946209	QAM256	6
7	187000000	2.400002	40.366287	QAM256	7
8	195000000	2.500000	40.366287	QAM256	8
9	203000000	2.299999	40.366287	QAM256	9
10	211000000	2.900002	40.366287	QAM256	10
11	219000000	2.900002	40.946209	QAM256	11
12	227000000	2.799999	40.366287	QAM256	12
13	235000000	3.099998	40.366287	QAM256	13
14	243000000	2.900002	40.366287	QAM256	14
15	251000000	3.099998	40.366287	QAM256	15
16	259000000	3.200001	40.366287	QAM256	16
17	267000000	3.000000	40.366287	QAM256	17
18	275000000	3.500000	40.946209	QAM256	18
19	283000000	3.900002	40.366287	QAM256	19
20	291000000	4.199997	40.946209	QAM256	20
21	299000000	4.099998	40.366287	QAM256	21
22	307000000	4.199997	40.366287	QAM256	22
23	315000000	3.599998	40.366287	QAM256	23
24	323000000	3.299999	40.366287	QAM256	24
26	339000000	3.299999	40.366287	QAM256	26
27	347000000	3.599998	40.366287	QAM256	27
28	355000000	3.500000	40.366287	QAM256	28
29	363000000	4.099998	40.946209	QAM256	29
30	371000000	3.400002	40.366287	QAM256	30
31	379000000	4.099998	40.366287	QAM256	31

3.0 Downstream channels

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

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

43

4.2

286824458

0

[mcons]

3.0 Upstream channels

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

1	32600000	46.270599	5120 KSym/sec	64QAM	3
2	46200000	46.520599	5120 KSym/sec	64QAM	1
3	25800000	45.770599	5120 KSym/sec	32QAM	4
4	39400000	46.520599	5120 KSym/sec	64QAM	2

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	8	0
4	US_TYPE_STDMA	0	0	0	0

Refresh data

General Configuration

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

Primary Downstream Service Flow

SFID	45044
Max Traffic Rate	1230000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	45043
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

[Adduxi]

Levels all look okay at the moment.  Have you run a speed test at RealSpeed - SamKnows  directly connected to the Hub via a known good Cat 6 cable, using a gigabit enabled device, e.g. laptop?  If not, please do so and let us know the result.

[mcons]

Hi there, thanks for your response.

All speed tests have been performed using SamKnows.

Samknows reports speeds TO the Super Hub 4 as perfect, in excess of 1000mbps but plugging in a device to ethernet port 1, port 2, port 3, whatever (correct cable tested 5E and 2 different Cat6, 1gbps enabled on the NIC) it sits between 300 and 600mbps when running samknows.com/realspeed. For example, saw an initial spike of 800mbps before it quickly shotdown to the 300/400 mark and settled there. 

I mean, I can buy even more cables? I don't have a cable tester unfortunately, but does the fact that it managed to spike up 800mbps for a second not mean that the cable is as advertised?

It's now been tested with 3 different brands of Cat6 across across 5 cables and 2 different brands of Cat5e cables for 7 different 1gbps cables and 2 different devices, making sure 1gbps is enabled on the device's LAN card.

[-tony-]

the cables would seem ok - are all the tests to the same wired device - if so try a test to that device with the hum in modem mode - if its still slow leave the hub in modem mode and put the pc into safe mode with networking and try that

you could also try a full reset of the hub 

[mcons]

Hi Tony, when you say a full reset of the hub, do you mean a factory reset or just a power cycle?
I will indeed try safe mode with networking, but I have tried 2 different windows devices.

[-tony-]

---

@mcons wrote:
Hi Tony, when you say a full reset of the hub, do you mean a factory reset or just a power cycle?
I will indeed try safe mode with networking, but I have tried 2 different windows devices.

---

both are worth trying - start with a power cycle and if that does nothing then a full reset - thats a last resort as it will set everything back to default - so you need to set things back to how you want them - passwords etc if you do reset it

[Zach_R]

Hi @mcons,

Apologies for the delayed response here, and sorry to hear you've been having some connection speed issues lately.

Are these ongoing today? If so, has the advice that @-tony- has offered helped at all?

Thanks,
 

[mcons]

Hi, apologies for the radio silence.

So plugged in direct to the modem, restarting, safe mode with networking etc. it's the same scenario.

We'll do a speed test and it will initially shoot up to 800 or so mbps and then slowly crawl down during the test and sit around 500mbps.

To be honest, I haven't tried a factory reset of the hub, but nothing has changed from the default settings anyway. I can try this today though if you think it might help.