Virgin Media Community

[Ruchir189]

Hi Team,

Account number: [MOD EDIT: PERSONAL INFORMATION REMOVED]
Area reference: 22

I am observing a very drastic ups and down in my Virgin Media Broadband speed. I have M100 plan where the speed limit is 108 Mbps but sometimes it goes even more that 108 Mbps but most of the time I found its very low like under 10 Mbps which gives me lot of trouble during working from home and hamper my work.

I am using LAN cable in my desktop machine, so it shouldn't be a WiFi or Distance issue.

Hope you can access my router logs remotely to investigate on this issue or please let me know if  you need anything from my end.

Thanks and looking forward your response ASAP.

 [MOD EDIT: Personal and private information has been removed from this post. Please do not post personal or private information in your public posts. Please review the Forum Guidelines]

[gary_dexter]

Please post the network, upstream and downstream logs from the hub admin pages 

[Ruchir189]

Thanks a lot Gary for your prompt response.

Please find below logs as requested. Logs are exceeding in this message, so please see follow another message in continuation of this one.

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)	402750000	Locked
Ranged Upstream Channel (Hz)	39400000	Locked
Provisioning State	Online

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

1	402750000	6.4	38	256 qam	25
2	186750000	8	38	256 qam	7
3	194750000	7.9	38	256 qam	8
4	202750000	7.5	38	256 qam	9
5	210750000	7.4	38	256 qam	10
6	218750000	7.1	38	256 qam	11
7	226750000	7.1	38	256 qam	12
8	234750000	7.3	38	256 qam	13
9	242750000	7.4	38	256 qam	14
10	250750000	7.1	38	256 qam	15
11	258750000	7	38	256 qam	16
12	266750000	7	38	256 qam	17
13	274750000	6.6	38	256 qam	18
14	282750000	6.5	38	256 qam	19
15	290750000	6.9	38	256 qam	20
16	298750000	6.9	38	256 qam	21
17	306750000	6.4	38	256 qam	22
18	314750000	6.4	38	256 qam	23
19	322750000	6.5	38	256 qam	24
20	410750000	6.5	38	256 qam	26
21	418750000	6.3	38	256 qam	27
22	426750000	6.5	38	256 qam	28
23	434750000	6.5	38	256 qam	29
24	442750000	6.5	38	256 qam	30

Downstream bonded channels

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

1	Locked	38.9	64932	7453
2	Locked	38.9	103211	15749
3	Locked	38.9	100622	14054
4	Locked	38.9	96334	13834
5	Locked	38.6	96203	16367
6	Locked	38.9	94796	11573
7	Locked	38.9	93167	12484
8	Locked	38.9	89378	18493
9	Locked	38.9	85713	14480
10	Locked	38.9	84859	9208
11	Locked	38.9	82084	11258
12	Locked	38.9	81221	17710
13	Locked	38.9	81899	5920
14	Locked	38.9	83327	9226
15	Locked	38.9	80872	13367
16	Locked	38.9	82919	6440
17	Locked	38.9	80417	7287
18	Locked	38.9	79718	8666
19	Locked	38.6	78287	12529
20	Locked	38.6	63806	11611
21	Locked	38.9	64819	3182
22	Locked	38.9	62585	3847
23	Locked	38.6	59892	6302
24	Locked	38.9	57245	7405

Upstream bonded channels

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

1	39400000	4.275	5120	64 qam	2
2	46200120	4.3	5120	64 qam	1
3	25800105	4.25	5120	32 qam	4
4	32600033	4.275	5120	64 qam	3

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[Ruchir189]

Network Log

Time Priority Description

02/07/2020 21:38:13	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 21:38:2	Warning!	LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 07:43:32	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2020 03:07:21	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/07/2020 07:49:52	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/06/2020 23:51:22	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/06/2020 14:28:55	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/06/2020 00:11:24	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/06/2020 08:10:31	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/06/2020 08:10:30	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/06/2020 00:56:31	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 11:47:36	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 11:45:1	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 02:24:32	Error	DHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 02:06:13	Error	DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 00:59:13	Error	DHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 00:47:56	Error	DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/06/2020 00:06:43	Error	DHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/06/2020 22:47:39	Error	DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/06/2020 22:44:53	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

General Configuration

Network access	Allowed
Maximum Number of CPEs	1
Baseline Privacy	Enabled
DOCSIS Mode	Docsis30
Config file	cmreg-vmdg505-rtsl10016u-b.cm

Primary Downstream Service Flow

SFID	233014
Max Traffic Rate	117000047
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	233013
Max Traffic Rate	10500047
Max Traffic Burst	16320
Min Traffic Rate	0
Max Concatenated Burst	16320
Scheduling Type	BestEffort

[Alex_RM]

Hi Ruchir189,

Thanks for posting, and sorry to see you're having some issues with the broadband speeds. 

The hub stats from here all look within the specifications we would expect. 

Can you confirm if your device has a gigabit NIC and if you're using a Cat6 Ethernet cable?

Alex_Rm