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SH3 Modem Mode - Latency Spikes.

Plenty of threads on this already but the more noise we make i can only hope Virgin start to take notice.

I have had 3 engineers in the last few weeks, no improvement. I also foolishly upgraded from M200 to M350 in hope that would solve my issues but its exactly the same and now im on a new 12month contact. 

 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/a208014e844e09b35b3e38144f5112fff9f002c3-12-05-2020

toms88_0-1589279371634.png

Considering moving to the Voom business service, is anyone here from Virgin able to confirm if i can do that? I dont want to pay cancellation fees if i do move service.

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Message 2 of 25
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Re: SH3 Modem Mode - Latency Spikes.

Hi there my name is Pawan Paul I am a virgin media technician I can give you a few tips for example make sure all connections are tight from the back of the hub to the isolater then do a hard rest which can be found at the back of the hub

All and any advice given is based on my experience in the field. If my answer was helpful to you please Mark as helpful or consider leaving the post some Kudos.

 

Fancy £50 off your bill? Ask me how and you might just get it!


Here to help! I'm a technician helping out whilst working from home. Find out more


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Re: SH3 Modem Mode - Latency Spikes.

https://community.virginmedia.com/t5/Networking-and-WiFi/Intermittent-high-latency/m-p/4251362/highl...

Connection is a dumpster fire - Virgin Media Community - 4246208

Intermittent packet loss, high latency throughout ... - Page 3 - Virgin Media Community - 4163632

3 more threads on the same topic.  Good call, lets get them all collated.  We need a statement from Virgin Media's Engineering Team on the following points: 

My Broadband Ping - Home
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Re: SH3 Modem Mode - Latency Spikes.

I appreciate your help but im WAY past checking cables and turning things on and off. Please look at the threads here, and start drawing some conclusions. 

Multiple threads, same issue. One thing that ties every complaint together....SH3 and Modem Mode. Unless you saying we are all crazy i dont get whats the issue you side actually looking at our comments regarding FW of the SH3.

 

£50 off my bill at this point is insulting. I have been calling and complaining since Feb about my internet at home and i pay £85 a month. 

At the very least can someone acknowledge our feedback and make it feel like we are being heard? Right now i feel like VM have totally ignored me since Feb.

 

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Alessandro Volta
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Re: SH3 Modem Mode - Latency Spikes.

Do you run pfSense?

VM need to rollback the firmware they hardly care about us in modem mode.

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Re: SH3 Modem Mode - Latency Spikes.

Yep, running PFSense as well. 

 

Yeah thats whats making me so angry, its obvious what the fault is but VM are just doing what about it? Nothing.

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Re: SH3 Modem Mode - Latency Spikes.

I had a better quality connection running a 4G router on PAYG.

Sure, not as fast but was sure as heck a better quality than this dumpster fire full of cabbages.

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Message 8 of 25
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Re: SH3 Modem Mode - Latency Spikes.

If you got the gear we can work out if the ICMP for BQM is dropping downstream or upstream by Wireshark host 80.249.99.164 if you receive a ping every 1.000ms ~ 0.999ms then its upstream.

Another thing to test but likely may not work is if the hub in modem mode idle delay sending packets so if you run a ping every 10ms delay that may get it out of idle or run my Test for outgoing ports Big dot test 1to999 for a long load to see if your BQM shows fine.   

 

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Re: SH3 Modem Mode - Latency Spikes.

 

Is this normal? Unix 01/01/1970?

Time Priority Description

12/05/2020 18:56:54Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:32criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:21:28noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:32criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:12:59criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:07:9Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:07:4criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:07:4Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:07:4criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 07:06:53Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:32criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:08:14Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:08:11criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:08:10Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:08:10criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:08:10Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:01:47Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:01:42Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:01:42criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/05/2020 15:01:41Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Downstream

 

Downstream bonded channels

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

11387500002.735256 qam1
21467500002.535256 qam2
31547500002.235256 qam3
4162750000235256 qam4
51707500001.935256 qam5
6178750000236256 qam6
7186750000235256 qam7
81947500001.736256 qam8
92027500001.536256 qam9
102107500001.235256 qam10
112187500001.436256 qam11
122267500001.536256 qam12
132347500001.436256 qam13
142427500001.236256 qam14
152507500000.936256 qam15
162587500000.736256 qam16
172667500000.736256 qam17
182747500000.736256 qam18
192827500000.736256 qam19
202907500000.736256 qam20
212987500000.535256 qam21
223067500000.735256 qam22
233147500001.236256 qam23
243227500001.436256 qam24



Downstream bonded channels

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

1Locked35.510590
2Locked35.725160
3Locked35.5204090
4Locked35.78770
5Locked35.71550
6Locked36.31510
7Locked35.71550
8Locked36.3940
9Locked36.31280
10Locked35.71490
11Locked36.6950
12Locked36.3540
13Locked36.31080
14Locked36.61550
15Locked36.32170
16Locked36.31150
17Locked36.32130
18Locked36.31520
19Locked36.31570
20Locked36.32350
21Locked35.53470
22Locked35.72950
23Locked36.32170
24Locked36.32650

 

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Re: SH3 Modem Mode - Latency Spikes.

Upstream bonded channels

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

1603000004.2512064 qam1
2462000004.25512064 qam3
3537000004.225512064 qam2
4394000534.225512064 qam4



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000
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