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Quinnaay
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Packet loss and high latency

For around 2 months I’ve had unplayable gameplay due to packet loss and ping spikes.

I’ve had 3 engineers round in a couple of weeks and a router change to potentially cure it and it still has not. It’s totally unacceptable and I’m fed up now.

I’ve been running a BQM the last couple of days please see below 

 




3.0 Downstream channels

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

253310000002.438.6QAM25625
323870000001.838.6QAM25632
334910000000.238.6QAM25633
344990000000.337.6QAM25634
355070000000.238.6QAM25635
365150000000.138.6QAM25636
61790000004.239QAM2566
71870000004.339QAM2567
81950000004.239QAM2568
92030000004.238.6QAM2569
10211000000439QAM25610
112190000004.239QAM25611
122270000004.239QAM25612
13235000000439QAM25613
14243000000439QAM25614
15251000000439QAM25615
162590000003.639QAM25616
172670000003.639QAM25617
182750000003.538.6QAM25618
192830000003.838.6QAM25619
20291000000439QAM25620
212990000003.739QAM25621
223070000003.238.6QAM25622
233150000002.838.6QAM25623
243230000002.738.6QAM25624
263390000002.238.6QAM25626
273470000002.238.6QAM25627
283550000002.339QAM25628
293630000002.238.6QAM25629
303710000002.238.6QAM25630
313790000002.138.6QAM25631



3.0 Downstream channels

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

25Locked38.60537700
32Locked38.60537700
33Locked38.60537700
34Locked37.63627600
35Locked38.60537700
36Locked38.60537700
6Locked38.98326100
7Locked38.98326100
8Locked38.98326100
9Locked38.60537700
10Locked38.98326100
11Locked38.98326100
12Locked38.98326100
13Locked38.98326100
14Locked38.98326100
15Locked38.98326100
16Locked38.98326100
17Locked38.98326100
18Locked38.60537700
19Locked38.60537700
20Locked38.98326100
21Locked38.98326100
22Locked38.60537700
23Locked38.60537700
24Locked38.60537700
26Locked38.60537700
27Locked38.60537700
28Locked38.98326100
29Locked38.60537700
30Locked38.60537700
31Locked38.60537700



3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
159964K1880QAM4096392


3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
159Locked411.3508013590

 

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Adduxi
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Re: Packet loss and high latency

You need to post the Upstream levels as well.  Network log is also missing?

The Downstream looks okay, but the BQM is a tad noisy, and shows some signs of over utilisation during peak evening hours.

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Quinnaay
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Re: Packet loss and high latency

Todays graph not in peak hours too

3.0 Upstream channels

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

125800000405120 KSym/sec64QAM4
23260000040.35120 KSym/sec64QAM3
33940000041.35120 KSym/sec64QAM2
44620000042.35120 KSym/sec64QAM1



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1US_TYPE_STDMA0000
2US_TYPE_STDMA0000
3US_TYPE_STDMA0000
4US_TYPE_STDMA00

0

 


17:17:443Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Wed 01/12/2021 17:19:145MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Wed 01/12/2021 17:31:305DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Thu 02/12/2021 18:38:033No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sun 05/12/2021 04:52:434DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sun 05/12/2021 04:52:446DHCP Renew - lease parameters tftp file-cmreg-vmdg640-bbt062+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Mon 06/12/2021 19:00:073No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Wed 08/12/2021 16:52:444DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Wed 08/12/2021 16:52:446DHCP Renew - lease parameters tftp file-cmreg-vmdg640-bbt062+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Fri 10/12/2021 10:43:015MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Fri 10/12/2021 10:55:195DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:42:296CM-STATUS message sent. Event Type Code: 2; Chan ID: 32; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:42:315Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:43:083Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:45:195MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:53:503SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:53:545Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;Sat 11/12/2021 13:54:016CM-STATUS message sent. Event Type Code: 4; Chan ID: 3; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

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Andrew-G
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Re: Packet loss and high latency

I think that the downstream power levels might be showing an amplifier that's been incorrectly setup, with excessive slope.  It's not immediately obvious from the table because (in addition to the continuing failure of many Hub 4s to report pre and post-RS errors) the table isn't ranked in frequency order, as the Hub 3 results are.  As and when the image gets approved you'll see what I mean where I charted your numbers power level versus frequency.

AndrewG_0-1639755822210.png

Ideally the power levels should be flattish or sloping gently downwards as frequency rises, but your numbers show what (to my mind) is far too steep a slope and too wide a range from highest to lowest.  Whether that's the root cause of your problems I don't know, but it needs sorting. 

 

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Corey_C
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Re: Packet loss and high latency

Thanks for your post and welcome to the Community Forums, Quinnaay,


Sorry to hear that you have been having connection issues. How has things been since your post?
I have run a remote diagnostic and have not been able to identify any issues with your connection.
We can also provide online broadband help here: https://www.virginmedia.com/help/services-support/broadband
Let us know if you need any further help.


Cheers,
Corey C

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Quinnaay
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Re: Packet loss and high latency

C16F154D-2F54-4874-9F6B-AD994069080B.jpeg

 @corey_c

 

still absolutely tragic and unplayable.

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Kath_F
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Re: Packet loss and high latency

Hi Quinnaay, 

Thanks for coming back to us in the Community and apologies to hear things are continuing to look dreadful. 

I can see that you are already in a conversation privately with my colleague regarding this. Due to this, I'm going to leave this with them 🙂

If you have any further issues, please let us know. 

Thanks, 

Kath_F
Forum Team




New around here? To find out more about the Community check out our Getting Started guide


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