50M How many Downstream Channels should I have?

cdgilbert · 11-04-2011, 18:35

Hi

I have had 50 mb for a year now and have never had problems.

Over the weekend my connection was up and down (LS16). This problem occured for someone else in my area too http://community.virginmedia.com/t5/...16/td-p/438657

The connection has now been restored but I now only have one Downstream channel (i has 3 before)

Cable Modem Operation Configuration
General Configuration
Network Access : Allowed
Maximum Number of CPEs : 1
Baseline Privacy : Enabled
DOCSIS Mode : DOCSIS 3.0
Config File : 7dsfd;kfoA,.iyewrkld
Primary Downstream Service Flow
SFID : 5422
Max Traffic Rate : 53000000 bps
Max Traffic Burst : 3044 bytes
Min Traffic Rate : 0 bps
Primary Upstream Service Flow
SFID : 5421
Max Traffic Rate : 5140000 bps
Max Traffic Burst : 8160 bytes
Min Traffic Rate : 0 bps
Max Concatenated Burst : 8160 bytes
Scheduling Type : Best Effort
　
　
Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 322750000 N/A N/A N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y N/N/N N/N/N N/N/N
Channel Id 121 N/A N/A N/A
Modulation 256QAM N/A N/A N/A
Symbol Rate
(Msym/sec) 6.952 N/A N/A N/A
Interleave Depth I=12
J=17 N/A N/A N/A
Power Level
(dBmV) 7.24 N/A N/A N/A
RxMER
(dB) 38.61 N/A N/A N/A
Correctable
Codewords 227 N/A N/A N/A
Uncorrectable
Codewords 306 N/A N/A N/A

Peter_ · 11-04-2011, 18:37

You have a fault and need to call the 50Mb Support line on 0800 052 0431 as you should not have one downstream on 50Mb.

cdgilbert · 11-04-2011, 18:41

Thanks.

Will give them a call.

Skie · 11-04-2011, 21:45

Out of pure curiosity, what speeds are you getting on speedtest.net?

cdgilbert · 11-04-2011, 21:54

28meg. Was getting the full 50 before.

Skie · 11-04-2011, 22:03

Cheers!

I'm going to annoy VM staff now and claim that means 4 channel capable kit can handle up to 112meg without any changes (and 8 channel kit 224meg)

Neo-Tech · 11-04-2011, 22:04

If I remember correctly there was an outage in Leeds on Saturday morning, could be related.

I'm assuming you've tried the usual power on and off?

jb66 · 11-04-2011, 22:06

The modem could but the network couldn't handle it well

cdgilbert · 11-04-2011, 22:14

Yeah rebooted a number of times. The other strange thing that is now happening is that it takes about 45 mins to establish a connection

error:

MDD message timeout;CM-MAC=00:22:68:f0:ee:b9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;

Neo-Tech · 11-04-2011, 22:24

This might be worth a shot, login to the modem's GUI, click on Tools at the top and click Reset. On my old Ambit 256, I'd usually catch on to another channel.

cdgilbert · 11-04-2011, 22:36

Sounds like a plan..
however I dont see any 'tools' option when I goto http://192.168.100.1/

Options are:-
•Information
•Status
•Downstream
•Upstream
•Upstream Burst
•Operation Config.
•Event Log

Thankks

Neo-Tech · 11-04-2011, 23:08

It's right at the top of the page in the header in small writing.

cdgilbert · 11-04-2011, 23:23

Thanks neo

Still cannot see it. Even looked at the source html of the page. Maybe it was removed in later versions?

Peter_ · 12-04-2011, 05:56

Quote:

Originally Posted by Skie

Cheers!

I'm going to annoy VM staff now and claim that means 4 channel capable kit can handle up to 112meg without any changes (and 8 channel kit 224meg)

He will have an unstable connection struggling to get a connection hence the requirement for a technician.

---------- Post added at 05:56 ---------- Previous post was at 05:55 ----------

Quote:

Originally Posted by Neo-Tech

This might be worth a shot, login to the modem's GUI, click on Tools at the top and click Reset. On my old Ambit 256, I'd usually catch on to another channel.

Not available on his modem VMNG300 ( MAC address tells me which model ) and reboot does the same.

Nopanic · 12-04-2011, 07:32

Quote:

Originally Posted by cdgilbert

Hi

Cable Modem Operation Configuration
General Configuration
Network Access : Allowed
Maximum Number of CPEs : 1
Baseline Privacy : Enabled
DOCSIS Mode : DOCSIS 3.0
Config File : 7dsfd;kfoA,.iyewrkld
Primary Downstream Service Flow
SFID : 5422
Max Traffic Rate : 53000000 bps
Max Traffic Burst : 3044 bytes
Min Traffic Rate : 0 bps
Primary Upstream Service Flow
SFID : 5421
Max Traffic Rate : 5140000 bps
Max Traffic Burst : 8160 bytes
Min Traffic Rate : 0 bps
Max Concatenated Burst : 8160 bytes
Scheduling Type : Best Effort
　
　
Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 322750000 N/A N/A N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y N/N/N N/N/N N/N/N
Channel Id 121 N/A N/A N/A
Modulation 256QAM N/A N/A N/A
Symbol Rate
(Msym/sec) 6.952 N/A N/A N/A
Interleave Depth I=12
J=17 N/A N/A N/A
Power Level
(dBmV) 7.24 N/A N/A N/A
RxMER
(dB) 38.61 N/A N/A N/A
Correctable
Codewords 227 N/A N/A N/A
Uncorrectable
Codewords 306 N/A N/A N/A

I'm the first to say networks isn't my thing .. but I see a 7.24 as a high power level on 50Mb ..