Menu
Reply
Highlighted
  • 5
  • 0
  • 0
Joining in
213 Views
Message 1 of 7
Flag for a moderator

Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

Hi there!

I've just upgraded from the 350mb internet package to the Gig1 Fibre and I've noticed I'm getting quite a lot of latency spikes/couple of random router restarts (which then resets the password on the router, and both the default (one printed on the bottom) and my set password won't work).

 

I've been reading a couple of posts and a few people have mentioned that in the network stats, you want a downstream power closest to 0 dBmV, but nothing over 10. All of mine are at about 11 - 12 dBmV (I can't screenshot/post right now as for some reason the status page has stopped loading!!!) On the cable coming in from the wall, there is already a 10db attenuator from when I first joined Virgin Media a few years ago (so I think when I had the original SuperHub 2 installed by the engineer, and then also when I had the Superhub 3). Could the "high" 12 dBmV on my downstream be an issue?

 

Here is a link to my TBB monitor (Live)

0fe7c8f9f2b916ee3b701ff89b0435cf5c219d9a

 

And a snapshot

4aab5ff86393bb6423a63700162a824d1aa3c180-14-11-2020

 

 

If anyone can offer any help, or point me in the right direction I'd really appreciate it!! 🙂  I'm using a Cat7 Ethernet cable (saw in some other threads people checking if they had a cat6+) so the connection between my PC and router should be fine!. 🙂 

0 Kudos
Reply
Highlighted
  • 5
  • 0
  • 0
Joining in
140 Views
Message 2 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

3.0 Downstream channels

ChannelFrequency (Hz)Power (dBmV)SNR (dB)ModulationChannel ID
113900000011.00000038.983261QAM2561
214700000010.80000338.983261QAM2562
315500000010.90000240.366287QAM2563
416300000010.80000340.946209QAM2564
517100000010.69999740.366287QAM2565
617900000010.69999740.366287QAM2566
718700000010.80000340.946209QAM2567
819500000011.00000040.366287QAM2568
920300000011.19999738.983261QAM2569
1021100000011.30000338.983261QAM25610
1121900000011.30000340.366287QAM25611
1222700000011.30000338.983261QAM25612
1323500000011.30000338.605377QAM25613
1424300000011.50000038.605377QAM25614
1525100000011.69999738.983261QAM25615
1625900000012.09999838.983261QAM25616
1726700000011.90000240.366287QAM25617
1827500000011.40000240.366287QAM25618
1928300000011.09999840.366287QAM25619
2029100000010.90000240.366287QAM25620
2129900000011.09999838.983261QAM25621
2230700000011.50000038.983261QAM25622
2331500000011.69999738.983261QAM25623
2432300000011.69999738.983261QAM25624
2536300000011.50000038.983261QAM25625
2637100000011.50000039.397190QAM25626
2737900000011.59999840.366287QAM25627
2838700000011.80000338.605377QAM25628
2939500000012.09999838.983261QAM25629
3040300000012.40000240.946209QAM25630
3141100000012.59999840.366287QAM25631

 

3.0 Downstream channels

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

1Locked000
2Locked293600
3Locked387800400
4Locked293600
5Locked293600
6Locked293600
7Locked293600
8Locked293600
9Locked293600
10Locked293600
11Locked293670
12Locked293600
13Locked293600
14Locked293600
15Locked293600
16Locked293600
17Locked293600
18Locked293600
19Locked293600
20Locked293600
21Locked293600
22Locked293600
23Locked293680
24Locked293600
25Locked293600
26Locked293600
27Locked293600
28Locked293610
29Locked293600
30Locked293600
31Locked1749707700

 

3.1 Downstream channels

 

ChannelChannel Width (MHz)FFT TypeNumber of Active SubcarriersModulation (Active Profile)First Active Subcarrier (Hz)
159964K1880QAM4096759



3.1 Downstream channels

Channel IDLock StatusRxMER Data (dB)PLC Power (dBmV)Correcteds (Active Profile)Uncorrectables (Active Profile)
159Locked 13.026640
0 Kudos
Reply
Highlighted
  • 5
  • 0
  • 0
Joining in
200 Views
Message 3 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

Here is my router stats for the downstream, for some reason my post keeps getting deleted about 5 minutes after I post this 😞 
 

3.0 Downstream channels

Channel

Frequency (Hz)

Power (dBmV)

SNR (dB)

Modulation

Channel ID

1

139000000

11.000000

38.983261

QAM256

1

2

147000000

10.800003

38.983261

QAM256

2

3

155000000

11.000000

40.366287

QAM256

3

4

163000000

10.900002

40.366287

QAM256

4

5

171000000

10.699997

40.366287

QAM256

5

6

179000000

10.699997

40.366287

QAM256

6

7

187000000

10.800003

40.366287

QAM256

7

8

195000000

11.000000

40.366287

QAM256

8

9

203000000

11.199997

38.605377

QAM256

9

10

211000000

11.400002

38.983261

QAM256

10

11

219000000

11.300003

40.366287

QAM256

11

12

227000000

11.400002

38.983261

QAM256

12

13

235000000

11.400002

38.605377

QAM256

13

14

243000000

11.599998

38.983261

QAM256

14

15

251000000

11.800003

38.983261

QAM256

15

16

259000000

12.199997

38.983261

QAM256

16

17

267000000

12.000000

40.366287

QAM256

17

18

275000000

11.400002

40.366287

QAM256

18

19

283000000

11.099998

40.366287

QAM256

19

20

291000000

10.900002

40.366287

QAM256

20

21

299000000

11.000000

38.983261

QAM256

21

22

307000000

11.599998

38.983261

QAM256

22

23

315000000

11.800003

38.983261

QAM256

23

24

323000000

11.699997

38.983261

QAM256

24

25

363000000

11.400002

38.983261

QAM256

25

26

371000000

11.500000

38.983261

QAM256

26

27

379000000

11.699997

40.366287

QAM256

27

28

387000000

11.800003

38.983261

QAM256

28

29

395000000

12.099998

38.983261

QAM256

29

30

403000000

12.400002

40.366287

QAM256

30

31

411000000

12.500000

40.366287

QAM256

31




3.0 Downstream channels

Channel

Lock Status

RxMER (dB)

Pre RS Errors

Post RS Errors

1

Locked

0

0

0

2

Locked

110395556

0

0

3

Locked

180471833

0

0

4

Locked

110169629

0

0

5

Locked

110140006

0

0

6

Locked

110215786

0

0

7

Locked

110267231

0

0

8

Locked

99542121

0

0

9

Locked

99678741

0

0

10

Locked

99792056

0

0

11

Locked

99712472

0

0

12

Locked

99390647

0

0

13

Locked

99271639

1

0

14

Locked

99415779

0

0

15

Locked

99241982

1

0

16

Locked

100291393

0

0

17

Locked

100218947

0

0

18

Locked

100040154

0

0

19

Locked

100289338

0

0

20

Locked

100201126

0

0

21

Locked

100473728

0

0

22

Locked

100127946

1

0

23

Locked

100159002

1

0

24

Locked

108731270

1

0

25

Locked

109048389

1

0

26

Locked

108980178

0

0

27

Locked

108986882

1

0

28

Locked

108906016

0

0

29

Locked

108832044

1

0

30

Locked

108993529

1

0

31

Locked

392667155

0

0



3.1 Downstream channels

Channel

Channel Width (MHz)

FFT Type

Number of Active Subcarriers

Modulation (Active Profile)

First Active Subcarrier (Hz)

159

96

4K

1880

QAM4096

759




3.1 Downstream channels

Channel ID

Lock Status

RxMER Data (dB)

PLC Power (dBmV)

Correcteds (Active Profile)

Uncorrectables (Active Profile)

159

Locked

 

13.1

2375476

0

 

0 Kudos
Reply
Highlighted
  • 5
  • 0
  • 0
Joining in
135 Views
Message 4 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

3.0 Downstream channels

Channel

Frequency (Hz)

Power (dBmV)

SNR (dB)

Modulation

Channel ID

1

139000000

11.000000

38.983261

QAM256

1

2

147000000

10.800003

38.983261

QAM256

2

3

155000000

10.900002

40.366287

QAM256

3

4

163000000

10.800003

40.946209

QAM256

4

5

171000000

10.699997

40.366287

QAM256

5

6

179000000

10.699997

40.366287

QAM256

6

7

187000000

10.800003

40.946209

QAM256

7

8

195000000

11.000000

40.366287

QAM256

8

9

203000000

11.199997

38.983261

QAM256

9

10

211000000

11.300003

38.983261

QAM256

10

11

219000000

11.300003

40.366287

QAM256

11

12

227000000

11.300003

38.983261

QAM256

12

13

235000000

11.300003

38.605377

QAM256

13

14

243000000

11.500000

38.605377

QAM256

14

15

251000000

11.699997

38.983261

QAM256

15

16

259000000

12.099998

38.983261

QAM256

16

17

267000000

11.900002

40.366287

QAM256

17

18

275000000

11.400002

40.366287

QAM256

18

19

283000000

11.099998

40.366287

QAM256

19

20

291000000

10.900002

40.366287

QAM256

20

21

299000000

11.099998

38.983261

QAM256

21

22

307000000

11.500000

38.983261

QAM256

22

23

315000000

11.699997

38.983261

QAM256

23

24

323000000

11.699997

38.983261

QAM256

24

25

363000000

11.500000

38.983261

QAM256

25

26

371000000

11.500000

39.397190

QAM256

26

27

379000000

11.599998

40.366287

QAM256

27

28

387000000

11.800003

38.605377

QAM256

28

29

395000000

12.099998

38.983261

QAM256

29

30

403000000

12.400002

40.946209

QAM256

30

31

411000000

12.599998

40.366287

QAM256

31




3.0 Downstream channels

Channel

Lock Status

RxMER (dB)

Pre RS Errors

Post RS Errors

1

Locked

0

0

0

2

Locked

2936

0

0

3

Locked

3878004

0

0

4

Locked

2936

0

0

5

Locked

2936

0

0

6

Locked

2936

0

0

7

Locked

2936

0

0

8

Locked

2936

0

0

9

Locked

2936

0

0

10

Locked

2936

0

0

11

Locked

2936

7

0

12

Locked

2936

0

0

13

Locked

2936

0

0

14

Locked

2936

0

0

15

Locked

2936

0

0

16

Locked

2936

0

0

17

Locked

2936

0

0

18

Locked

2936

0

0

19

Locked

2936

0

0

20

Locked

2936

0

0

21

Locked

2936

0

0

22

Locked

2936

0

0

23

Locked

2936

8

0

24

Locked

2936

0

0

25

Locked

2936

0

0

26

Locked

2936

0

0

27

Locked

2936

0

0

28

Locked

2936

1

0

29

Locked

2936

0

0

30

Locked

2936

0

0

31

Locked

17497077

0

0



3.1 Downstream channels

Channel

Channel Width (MHz)

FFT Type

Number of Active Subcarriers

Modulation (Active Profile)

First Active Subcarrier (Hz)

159

96

4K

1880

QAM4096

759




3.1 Downstream channels

Channel ID

Lock Status

RxMER Data (dB)

PLC Power (dBmV)

Correcteds (Active Profile)

Uncorrectables (Active Profile)

159

Locked

 

13.0

2664

0

 

0 Kudos
Reply
Highlighted
  • 11.46K
  • 889
  • 1.46K
Alessandro Volta
180 Views
Message 5 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

Your Upstream Power Levels are too high (Max 10dBmV)

This will need an engineer to put right.

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 7 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.

***********************************************************************************************************************************

Mike Robinson
Retired Aircraft Engineer & Computer Based Training and Learning Designer for many of the world's Military Arms.


My Broadband Ping - 26_Aug_2020

Highlighted
  • 5
  • 0
  • 0
Joining in
138 Views
Message 6 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed


@MikeRobbo wrote:

Your Upstream Power Levels are too high (Max 10dBmV)

This will need an engineer to put right.

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 7 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.


Hi Mike,

 

Thanks so much for getting back to me! Do you mean my Downstream Power Levels? For somereason whenever I posted by my Downstream and Upstream stuff it would delete the 2nd post 😞

 

3.0 Upstream channels

Channel

Frequency (Hz)

Power (dBmV)

Symbol Rate (ksps)

Modulation

Channel ID

1

39400000

31.020599

5120 KSym/sec

64QAM

4

2

32600000

30.020599

5120 KSym/sec

64QAM

5

3

46200000

31.520599

5120 KSym/sec

64QAM

3

4

53700000

32.020599

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

1

0

2

US_TYPE_STDMA

0

0

1

0

3

US_TYPE_STDMA

0

0

1

0

4

US_TYPE_STDMA

0

0

1

0

 

 

 

I was worried I might need an engineer, thanks for flagging that, might give them a call (guessing it will have to be Monday now!), is it the same number as customer services? 0345 454 1111?

 

Cheers!

 

 

My Broadband Ping - Virgin Fibre

0 Kudos
Reply
Highlighted
  • 3.53K
  • 208
  • 272
Forum Team
Forum Team
11 Views
Message 7 of 7
Flag for a moderator

Re: Upgraded to Gig1 Fibre - Latency Spikes/fluctuation in speed

Hi BubbleTree,

 

Thanks for posting and sorry to see you've been having some issues with your connection.

 

I've been able to locate your account using your forum details and can see you were able to get through to speak to an agent.

 

I have however run a check on your equipment and can see the hubs upstream and downstream power levels are out of specification. I've arranged for an engineer to come and take a closer look, you can view the time and date of your appointment via your online account here

 

Alex_Rm

0 Kudos
Reply