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ElliottVM
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Gig1 Upload slow 25Mbps

Hi All,

I’ve had gig1 for a few months now and while download is hitting over 1Gbps my upload is limited to 25Mbps.

I have carried out a number of RealSpeed tests via SamKnows and doesn’t ever hit anything faster. I had raised a support case via email but have heard nothing from them - this was over a month  ago.

Below is a breakdown of the router; I’ve tried running in modem mode and router noise, different times during the day and different speed test sites (but really relying on SamKnows Real Speed).

I was previously on M500 and was able to achieve over 25Mbps so it’s absolutely related to the Gig1 service.

Any help would be great.

3.0 Upstream channels

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

13260000041.55120 KSym/sec16QAM5
25370000043.35120 KSym/sec32QAM2
34620000042.35120 KSym/sec16QAM3
43940000041.55120 KSym/sec16QAM4



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1US_TYPE_STDMA0000
2US_TYPE_STDMA0000
3US_TYPE_STDMA0020
4US_TYPE_STDMA0000

  Primary Upstream Service Flow

SFID
266089
Max Traffic Rate
55000270
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort

 

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

 

Real Speed Results

625966B3-2FE7-4046-BBB8-82E1DEEC9BB0.jpeg

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JitteryPinger
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Re: Gig1 Upload slow 25Mbps

When did you upgrade to Gig1 from M500.

There is currently al ot of issues with Upstream Congestion due to increased demand of upload traffic due to working from home and now also virtual classrooms which consume a fair chunk of bandwidth.

This isn't helped by the fact that DOCSIS (Cable Broadband Tech) isn't designed in a way to give high upstream bandwidth or capacity 'yet'

If I've helped please let me know 🙂 Matt

A 10+ Year Virgin Media veteran, been here through the Up's and the Down's and Down's....
Gigabit 5G Vodafone 5G EE BQM Hub 4 BQM Hub 3 BQM Hitron CGNV4 BQM TT BQM

Technical Support - AV & Networking - Customer Service - Finance - Culinary - Construction
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Tazz
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Re: Gig1 Upload slow 25Mbps

It seems your upload channels are running at 16QAM/32QAM and should be running at 64QAM. This will reduce capacity. You need an engineer to put this right. Make sure the cable is tight too.

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JitteryPinger
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Re: Gig1 Upload slow 25Mbps


@Tazz wrote:

It seems your upload channels are running at 16QAM/32QAM and should be running at 64QAM. This will reduce capacity. You need an engineer to put this right. Make sure the cable is tight too.


Thanks for spotting that.... can't believe I missed that.

Time for some sleep.

If I've helped please let me know 🙂 Matt

A 10+ Year Virgin Media veteran, been here through the Up's and the Down's and Down's....
Gigabit 5G Vodafone 5G EE BQM Hub 4 BQM Hub 3 BQM Hitron CGNV4 BQM TT BQM

Technical Support - AV & Networking - Customer Service - Finance - Culinary - Construction
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