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mcons
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Message 1 of 14
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Gig1 Slow Ethernet (half or worse)

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.

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mcons
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Message 2 of 14
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Re: Gig1 Slow Ethernet (half or worse)

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
253310000003.59999840.366287QAM25625
11390000001.40000240.366287QAM2561
21470000001.59999840.366287QAM2562
31550000001.70000140.946209QAM2563
41630000001.79999940.366287QAM2564
51710000002.20000140.366287QAM2565
61790000002.20000140.946209QAM2566
71870000002.40000240.366287QAM2567
81950000002.50000040.366287QAM2568
92030000002.29999940.366287QAM2569
102110000002.90000240.366287QAM25610
112190000002.90000240.946209QAM25611
122270000002.79999940.366287QAM25612
132350000003.09999840.366287QAM25613
142430000002.90000240.366287QAM25614
152510000003.09999840.366287QAM25615
162590000003.20000140.366287QAM25616
172670000003.00000040.366287QAM25617
182750000003.50000040.946209QAM25618
192830000003.90000240.366287QAM25619
202910000004.19999740.946209QAM25620
212990000004.09999840.366287QAM25621
223070000004.19999740.366287QAM25622
233150000003.59999840.366287QAM25623
243230000003.29999940.366287QAM25624
263390000003.29999940.366287QAM25626
273470000003.59999840.366287QAM25627
283550000003.50000040.366287QAM25628
293630000004.09999840.946209QAM25629
303710000003.40000240.366287QAM25630
313790000004.09999840.366287QAM25631


3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors
25Locked40.36628700
1Locked40.36628700
2Locked40.36628700
3Locked40.94620900
4Locked40.36628700
5Locked40.36628700
6Locked40.94620900
7Locked40.36628700
8Locked40.36628700
9Locked40.36628700
10Locked40.36628700
11Locked40.94620900
12Locked40.36628700
13Locked40.36628700
14Locked40.36628700
15Locked40.36628700
16Locked40.36628700
17Locked40.36628700
18Locked40.94620900
19Locked40.36628700
20Locked40.94620900
21Locked40.36628700
22Locked40.36628700
23Locked40.36628700
24Locked40.36628700
26Locked40.36628700
27Locked40.36628700
28Locked40.36628700
29Locked40.94620900
30Locked40.36628700
31Locked40.36628700


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)
33Locked434.22868244580

 

 

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mcons
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Message 3 of 14
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Re: Gig1 Slow Ethernet (half or worse)

3.0 Upstream channels

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

13260000046.2705995120 KSym/sec64QAM3
24620000046.5205995120 KSym/sec64QAM1
32580000045.7705995120 KSym/sec32QAM4
43940000046.5205995120 KSym/sec64QAM2



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1US_TYPE_STDMA0000
2US_TYPE_STDMA0000
3US_TYPE_STDMA0080
4US_TYPE_STDMA0000

 

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
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Adduxi
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Message 4 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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.

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mcons
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Message 5 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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.

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-tony-
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Message 6 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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 

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mcons
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Message 7 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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.
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-tony-
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Message 8 of 14
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Re: Gig1 Slow Ethernet (half or worse)


@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

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Zach_R
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Message 9 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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,
 



Zach - Forum Team


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mcons
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Message 10 of 14
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Re: Gig1 Slow Ethernet (half or worse)

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.

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