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Slowdown in the evening

gjchester
On our wavelength

Hi.

First I'm an IT person so I've tried the obvious...

I have a Hub 3.0 and the contract is Volt 350.  We also have O2 sim only so should get a boosted deal.

I also have the hub in MODEM mode, and use a Sophos UTM as a router.  I say this as I don't want to have a conversation with 1st line support who will want me to rejig the house setup to use the hub in router mode if its I can help it.    Typically I get about 200m bps.  I know it could be higher but I'm gessing there is an overhead in the appliance but dont worry to much.
Recently in the afternoon our speeds drastically dropping according to Speedtest.net,  it coud be contention but I'm also see ing CM errors.    My PC that I test on is wired to a gigabit switch and on to the router, so its dont think its a slow device creating issues.plus I'd see that all the time not just the evening

This morning (8am)  I got about 190 ish MBPS but tonight (17:47) speedtest is reporting 28.85 mbps. 

I think this is probalby going to need a engineer call out, There are lots of RCS errors in the network log (mac partially redacted), I'm just looking for some confirmation before I fight first line support and a fixed script about going to router mode on the hub....

Can someone case an eye over it and say if it looks OK or do I need someone to do some local testing?

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1307000000538256 qam22
2139000000330256 qam1
31470000003.531256 qam2
41550000004.132256 qam3
51630000003.932256 qam4
61710000003.933256 qam5
71790000004.135256 qam6
81870000004.335256 qam7
91950000004.336256 qam8
102030000004.337256 qam9
112110000004.137256 qam10
122190000003.737256 qam11
132270000003.936256 qam12
14235000000437256 qam13
152430000003.737256 qam14
162510000003.537256 qam15
172590000003.538256 qam16
182670000003.938256 qam17
192750000004.138256 qam18
20283000000438256 qam19
212910000004.340256 qam20
222990000004.638256 qam21
233150000005.440256 qam23
243230000005.540256 qam24


 

1 ACCEPTED SOLUTION

Accepted Solutions

Cardiffman282
Knows their stuff

Also look out for possible local network congestion by setting up a BQM https://www.thinkbroadband.com/broadband/monitoring/quality

Also check for local faults on 0800 561 0061. 

I'm not a Very Insightful Person (just a little bit, sometimes). I don't work for Virgin Media (but then nor do any of the offshore customer service agents).

See where this Helpful Answer was posted

13 REPLIES 13

gjchester
On our wavelength

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked38.916065293
2Locked30.747793461079784670
3Locked31.1-117850013336892036
4Locked32.7-892197231737429
5Locked32.9-1538312097798279
6Locked33.331548550886723
7Locked35.546250884016906326
8Locked35.79350480173924918
9Locked36.6414186864170405
10Locked37.36270618753260309
11Locked37.62429273534254
12Locked37.647210841311
13Locked36.3549320794
14Locked37.61127631753
15Locked37.63023119912
16Locked37.37971011652
17Locked38.6159535584
18Locked38.6157952092
19Locked38.616719126
20Locked38.9163549
21Locked40.3156896
22Locked38.91735674
23Locked40.3145559
24Locked40.31374240

 

Upstream bonded channels

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

13010000051512064 qam4
23660000051512064 qam3
34310003449.5512064 qam2
44960000051512064 qam1



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
k;fg87dsfd;kfoA,.iyewrkldJKDH



Primary Downstream Service Flow

SFID726
Max Traffic Rate402500089
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID725
Max Traffic Rate38500089
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort

 

Network Log
Time Priority Description
20/11/2023 17:46:45 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:46:8 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:40:3 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:38:15 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:27:18 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:43 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:41 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:20 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:20:45 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:11:18 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:09:42 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:08:5 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:06:22 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:03:45 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:03:42 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:02:43 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:02:40 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:01:59 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 16:56:58 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 16:55:54 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

Cardiffman282
Knows their stuff

Also look out for possible local network congestion by setting up a BQM https://www.thinkbroadband.com/broadband/monitoring/quality

Also check for local faults on 0800 561 0061. 

I'm not a Very Insightful Person (just a little bit, sometimes). I don't work for Virgin Media (but then nor do any of the offshore customer service agents).

gjchester
On our wavelength

Doh,  Apologes I went to mark both as helpful and didn't know I could only do it once.
The Box is the wall at the back, this may be complicated by the fact we live in a 3 story town house and the cables come along the sofits and down  but I can at least check as far as my wiring.   

My Local Green box is also a mess, its not seated right on the base,  (and hasnt been for years) so it could be at that end.  I'll take a good look tommorow and see.  

Many Thanks to you both, 

 

gjchester
On our wavelength

For what its worth its now recording 41mbps down and 31.97 up onspeed test with no differnece other than I went and ate dinner...

gjchester
On our wavelength

More log as I may end up raising it via here than first line support..

Network Log
Time Priority Description
20/11/2023 18:22:5 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:16:40 critical No Ranging Response received - T3 time-out;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:00:6 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:58:51 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:58:47 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:58:44 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:53:22 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:52:41 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:46:45 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:46:8 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:40:3 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:38:15 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:27:18 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:43 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:41 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:24:20 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:20:45 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:11:18 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:09:42 Warning! Lost MDD Timeout;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 17:08:5 Warning! RCS Partial Service;CM-MAC=40:0d: xx:xx:xx:xx;CMTS-MAC=00:5f: xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

Adduxi
Very Insightful Person
Very Insightful Person

Apart from the very bad connection, you are still only on a configuration file for 350?  No sign of any VOLT benefits to your speed tier. 

I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more

Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks

Roger_Gooner
Alessandro Volta

The easy checks you can do yourself are powering off the hub, checking that the cable is not damaged or twisted and that all connections between hub and wall socket are tight. Power on the hub and see what happens.

--
Hub 5, TP-Link TL-SG108S 8-port gigabit switch, 360
My Broadband Ping - Roger's VM hub 5 broadband connection

Hi 

Tried rebooting, and the conenction at the CM is tight. Noting has changed recently but I understand its workt chelcking the cables are tight as they can work loose.     I'll go look at the the outside box and local green box later in the light.

This is my BQM , NOTE the 100% loss  at 2:30 ish is expected as I reboot the router each day, partly as I was seeing issues and this helped, and also it means any updates are automatically applied every day.

Also the CM's see no errors since 10:30 PM yesterday in the log.and we are currently running at closer to the expected speed.

gjchester_0-1700548096926.png

 

Also I've seen no errors since 10:30 PM yesterday in the log.

 
20/11/2023 22:38:36 Warning! Lost MDD Timeout;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 22:35:14 Warning! RCS Partial Service;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 19:00:38 Warning! Lost MDD Timeout;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 19:00:34 Warning! RCS Partial Service;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 19:00:22 Warning! Lost MDD Timeout;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:59:22 Warning! RCS Partial Service;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:57:42 Warning! Lost MDD Timeout;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:55:56 critical No Ranging Response received - T3 time-out;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
20/11/2023 18:22:5 Warning! Lost MDD Timeout;CM-MAC=40:0d:xx:xx:xx:xx;CMTS-MAC=00:5f:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1307000000540256 qam22
21390000004.438256 qam1
31470000004.538256 qam2
41550000004.538256 qam3
51630000004.538256 qam4
61710000004.640256 qam5
71790000004.840256 qam6
81870000004.839256 qam7
91950000004.640256 qam8
102030000004.540256 qam9
112110000004.540256 qam10
122190000004.540256 qam11
132270000004.340256 qam12
14235000000440256 qam13
152430000003.540256 qam14
162510000003.540256 qam15
172590000003.740256 qam16
182670000003.740256 qam17
19275000000440256 qam18
202830000004.540256 qam19
212910000004.940256 qam20
22299000000540256 qam21
233150000005.540256 qam23
24323000000640256 qam24



I think I’ve got idea where the issue may lie, it’s might not be evenings but weather.

Any tips how I get this escalated quickly past first line support as there’s no changes that can be done remotely to fix that wall box.

 

This is our wallbox. I’m pretty sure it should not be open at the top or side, not cracked and is probably letting water in..  

IMG_0457.jpeg

IMG_0458.jpeg

Mind you the Green box in the road probably is as bad,  I’m sure those cables should be inside and the top down so it’s at least waterproof.

 

 

 

IMG_0456.jpeg