Just had Gig1 added to my service - Massive change in variability but no real speed increase

[Thwaker]

Hi All

Anyone else moved to gig1 ? How long did it take to see a change in speed - speed test is showing no change, SamKnows is showing no change... so wondering if it takes time for the service to provision ?

I saw a huge increase in variability on throughput and latency. The graph below is from the line monitoring - you can see when the provision to 1G happened yesterday - before that throughput is a constant 550mbps flat line - after that it's all over the shop as is the latency.

48hr plot

 

5day plot

All connections are via Ethernet - No Wifi involved.

[DJ_Shadow1966]

Hello

Which hub do you have is it either a hub 3 or a hub 4 if you still have a hub 3 then that will not run for a 1gb service ?

Regards Mike

[Thwaker]

Hub 4 - everything attached to Gigabit switching. Port to port on network is 928,428Kbits with a <0msec latency (That's from iPerf so in reality is running at theoretical GE max of 940Mbps)

Hub 4 has been working since December with no issue on M500.

thanks 

[conman33158]

It might be a good start to upload your router stats and setup a BQM and we can see if anything is amiss 🙂

Type 192.168.0.1 or (192.168.100.1 if you have your Hub in Modem mode) into your address bar at the top of your browser

Do NOT log in, just click “Check Router Status” at the bottom of the page. Sometimes the “Check Router Status” is missing, in this case just go ahead and log in and go to Advanced Settings-> Tools-> Network Status.

Please copy and paste the contents of the Downstream, Upstream, Configuration and Network Log tabs, if you get a yellow warning just click the Post button again.

Do not try to fit everything in one post! You can use more than one post for each configuration tab if needed!

If you get a warning when you hit “Post” just hit “Post” again and it should work ok!

Please do not use screenshots

Also can you please setup a Broadband Quality Monitor (BQM) at thinkbroadband.com. Just click on Create a new monitor.

Under your graph you just created Click (Share Live Graph)

Copy the text in the “Direct Link” box and paste it on here

[N3m3sis1]

Please try what I posted here. I switched from 600Mbs to 1Gb service and had the same issues until I did this. https://community.virginmedia.com/t5/Speed/Slow-Speeds-from-Hub4-to-PC-on-1Gb-s-A-partial-Solution-a...

Let me know how it goes

[Thwaker]

Apologies for the delay - All the details are here (Link is still topping out at 600Mbps unshaped)

https://www.thinkbroadband.com/broadband/monitoring/quality/share/7127de4d8eef4786eb3842f1039978a0b94efcca

3.0 Downstream channels

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

1	138750000	6.1	37.4	QAM256	1
2	146750000	5.4	37.4	QAM256	2
3	154750000	5	37.6	QAM256	3
4	162750000	4.6	37.6	QAM256	4
5	170750000	4.4	37.6	QAM256	5
6	178750000	4.1	37.6	QAM256	6
7	186750000	3.8	37.6	QAM256	7
8	194750000	3.7	37.6	QAM256	8
9	202750000	3.2	37.6	QAM256	9
10	210750000	3.1	37.6	QAM256	10
11	218750000	2.7	37.4	QAM256	11
12	226750000	2.3	37.4	QAM256	12
13	234750000	1.1	37.6	QAM256	13
14	242750000	1.4	38.6	QAM256	14
15	250750000	1.5	38.6	QAM256	15
16	258750000	2	39	QAM256	16
17	266750000	1.5	38.6	QAM256	17
18	274750000	1.2	38.6	QAM256	18
19	282750000	0.6	38.6	QAM256	19
20	290750000	0.4	38.6	QAM256	20
21	298750000	0.3	38.6	QAM256	21
22	306750000	0.1	38.6	QAM256	22
23	314750000	0.5	38.6	QAM256	23
24	322750000	0.3	38.6	QAM256	24
25	330750000	1.1	38.6	QAM256	25
26	338750000	0.7	38.6	QAM256	26
27	346750000	-0.7	38.6	QAM256	27
28	354750000	-1.4	38.6	QAM256	28
29	362750000	-1.8	38.6	QAM256	29
30	370750000	-1.5	38.6	QAM256	30
31	378750000	-2.1	39	QAM256	31

3.0 Downstream channels

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

1	Locked	37.355988	0	0
2	Locked	37.355988	0	0
3	Locked	37.636276	0	0
4	Locked	37.636276	0	0
5	Locked	37.636276	0	0
6	Locked	37.636276	0	0
7	Locked	37.636276	0	0
8	Locked	37.636276	0	0
9	Locked	37.636276	0	0
10	Locked	37.636276	0	0
11	Locked	37.355988	0	0
12	Locked	37.355988	0	0
13	Locked	37.636276	0	0
14	Locked	38.605377	0	0
15	Locked	38.605377	0	0
16	Locked	38.983261	0	0
17	Locked	38.605377	0	0
18	Locked	38.605377	0	0
19	Locked	38.605377	0	0
20	Locked	38.605377	1	0
21	Locked	38.605377	0	0
22	Locked	38.605377	0	0
23	Locked	38.605377	0	0
24	Locked	38.605377	0	0
25	Locked	38.605377	0	0
26	Locked	38.605377	0	0
27	Locked	38.605377	0	0
28	Locked	38.605377	0	0
29	Locked	38.605377	1	0
30	Locked	38.605377	0	0
31	Locked	38.983261	0	0

[Thwaker]

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	cmreg-vmdg640-bbt076-b.cm

Primary Downstream Service Flow

SFID	62896
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	62895
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

[Thwaker]

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status	Online	DOCSIS 3.1
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	31	4
DOCSIS 3.1 channels	1	0

3.0 Upstream channels

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

1	32600000	48.3	5120 KSym/sec	64QAM	5
2	46200000	51.3	5120 KSym/sec	64QAM	3
3	53700000	52.3	5120 KSym/sec	64QAM	2
4	39400000	49.5	5120 KSym/sec	64QAM	4

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	0	0

[Thwaker]

Refresh data

Network LogTime Priority Description

Fri 09/04/2021 07:57:59	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 09/04/2021 07:58:02	6	CM-STATUS message sent. Event Type Code: 24; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 09/04/2021 07:58:04	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Fri 09/04/2021 07:58:29	6	CM-STATUS message sent. Event Type Code: 24; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon 12/04/2021 12:58:04	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Sun 18/04/2021 03:42:39	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon 19/04/2021 13:28:07	4	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:01:24	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 29/04/2021 10:39:39	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 29/04/2021 10:39:50	5	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 29/04/2021 10:40:27	6	CM-STATUS message sent. Event Type Code: 4; Chan ID: 33; 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;
Thu 01/01/1970 00:01:20	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[conman33158]

I don't see a 3.1 downstream channel. Your upload power levels are too high and your download power levels could do with being levelled out a bit, you would need an engineer to put right and so far your BQM is showing a lot of latency spikes which could be caused by the high upload power levels.

Best to ring Virgin on or just after 8am on 0345 454 1111 or 150 from a Virgin landline, alternatively you can wait here for a Virgin staff member to pick it up, but unfortunately this will typically be between 5-10 days, sometimes sooner, sometimes later depending on how busy they are. If you decide to call it in it will run through a few automated options and after that ring back again and it should recognise that you have rang previously and then put you in the queue for a Virgin representative.