Two disconnections on 50mb
 

Both yesterday and today now ive had two disconnections.

When clicking on network and sharing center the connection between Router and PC is fine yet connection between router and net isnt and when u click fix it says cannot find DNS or DNS not responding.

The circular planet light on the router also goes from green to yellow.

Is this a router problem?

Re: Two disconnections on 50mb
 

Try a direct connection and see.

Re: Two disconnections on 50mb
 

Just happened again this time modem refused to lock back on...

Here is the modem event log....
MOD: Log removed due to CM-MAC

Here are the power levels....

Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 299000000 307000000 315000000 323000000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 136 137 138 139
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) 0.55 -0.18 0.29 0.51
RxMER
(dB) 37.36 37.36 37.36 37.94
Correctable
Codewords 12 19 25 21
Uncorrectable
Codewords 283 280 256 247


Cable Modem Upstream
US-1 US-2 US-3 US-4
Channel Type 1.0 N/A N/A N/A
Channel ID 1 N/A N/A N/A
Frequency
(Hz) 47400000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 50.50 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 5 0 0 0
T4 Timeouts 0 0 0 0

---------- Post added at 20:01 ---------- Previous post was at 19:41 ----------

and again....

MOD:Log removed due to CM-MAC addresses
Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 299000000 307000000 315000000 323000000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 136 137 138 139
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) 6.10 5.72 5.95 5.96
RxMER
(dB) 37.36 37.64 37.94 37.94
Correctable
Codewords 0 2 4 7
Uncorrectable
Codewords 287 254 252 277


Channel Type 1.0 N/A N/A N/A
Channel ID 1 N/A N/A N/A
Frequency
(Hz) 47400000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 50.00 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 55 0 0 0
T4 Timeouts 0 0 0 0

---------- Post added at 20:31 ---------- Previous post was at 20:01 ----------

50mb support just reset my modem and my upstream has greatly increased....

https://www.cableforum.co.uk/images/...2010/02/50.png

Re: Two disconnections on 50mb
 

Re: Two disconnections on 50mb
 

Thanks Kymmy

Re: Two disconnections on 50mb
 

Doesn't look good. The T3 timeouts and fluctuating downstream power.

The latter could be local - that would have been my favourite except that your RxMER doesn't fluctuate with the power. I suppose there are conditions where it's not an impairment - perhaps an amplifier or common path distortion which would show as bad SNR at the CMTS.

Needs calling in IMO.

Re: Two disconnections on 50mb
 

got a tech coming out Tuesday, apparently downstream is a little "To high" according to second line support.

But if its downstream why is the upstream whats causing the problems, from the own modem logs we can see upstream is the issue....

Fri Feb 5 19:54:36 2010 Fri Feb 5 19:54:36 2010 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel

This happened 3 times now.

Re: Two disconnections on 50mb
 

Return path has always been a problem for you, this was the case when you were on 20Mbit on D3 what makes you think it would be any different on 50Mbit/D3?
Still you can have tech after tech, CEO call after CEO call, must break up the day for you.

Re: Two disconnections on 50mb
 

Sephiroth its definately upload related....

I just did an upload of a file and it max's out at 161k which is around 1.3mb/s lower than what i should be getting. The only time i got what i should be is when support reset my modem and i was getting 1.58mb for a few hrs till the modem reset on its own accord again and went back to 1.33mb. Also from the modem logs of not being able to lockon to an upstream channel.

Re: Two disconnections on 50mb
 

I'd get the engineer (if he's the right sort) to test back to the cabinet, particularly the amplifiers. I'm not saying ot is the cause but it could need elimination from the equation.

Re: Two disconnections on 50mb
 

Network techs don't do home calls, he won't be the right sort.

Proving out the RF network is easy enough, just check CMTS for issues from other modems in the postcode on the same equipment.

A more relevant question would be to work out why this happened:

Power Level (dBmV) 0.55 -0.18 0.29 0.51

Power Level (dBmV) 6.10 5.72 5.95 5.96

Both levels are fine, an unexplained swing like that is not, though it is an almost exactly 6dBmV swing and upstream power dropped by 0.5dBmV - consistent with removal of a 6dB forward path attenuator, the 0.5dBmV upstream change being insertion loss on the attenuator. If you removed an attenuator put it back and your power levels are nigh on perfect.

Re: Two disconnections on 50mb
 

I dont have an Attenuator, i did have a 3dBmv but he took it off when he installed 50mb and said i didnt need and took it with him.

Second line support have stated two things.....
First stated it was a download signal as its up just on the edge of being ok.

Then when i pointed out the T3 Errors in the log they stated that the upstream was "A little High"...

Now the connection only tends to die really if its under stress for example, I reciently wiped and reloaded system to put on Windows 7 and im attempting to do a full download of all emails from a Googlemail address which is about 1.7GB worth of emails, now i cannot download emails and use the connection to browse at the same time as the connection will just stop as if its hit a brick wall and it will either recover after about 20 T3 Errors appear on the Modem settings or the modem will reboot and sometimes like the day before yesterday refused to lock back on and i had to ring support who reset my modem.

If it is the upstream thats the cause if its not right and is being saturated for some reason would it cause T3 errors and reboots?

Broadbandings i have been through this weird increase and decrease of signals with Virgin in the past.... Now last November they replaced my modem again which put me back onto the DOCSIS 1.0 network and upstream levels dropped from 53dBmv to around 48dBmv. Just after christmas for some reason the modem went back onto the docsis 1.1 network for no reason the only thing i can think of is network relief and the modem refused point blank to lock on and the level was 61dBmv. I rang support who reset the modem and the modem jumped over back to Docsis 1.0 and back to around 48dBmv and never had a problem since now until again upgrading to the BSR.

Re: Two disconnections on 50mb
 

The upstream power is fine. The downstream power is fine. It moving suggests someone removed attenuation from somewhere.

The previous signal changes are not unexpected behaviour between the two networks and aren't an issue in this case, no other network to choose from.

You seem to have the exact same problems you did before - poor return path on the 47.4MHz channel. They can't move you to another channel as there just isn't one.

Re: Two disconnections on 50mb
 

So what do u suggest?

Re: Two disconnections on 50mb
 

Another ISP. I have.

Re: Two disconnections on 50mb
 

QFE

As did I a long time ago.

In an ideal world VM would have provided me with a service I wanted, due to factors beyond their control they couldn't serve my needs.

After 6 six service techs, network techs and headend techs, it goes without saying more calls to VM then I care to remember. I moved to another ISP.

My time is precious, tech visits & calls ate into my time. So if you have nothing to do all day but wait for techs to visit & make calls to your ISP or derive some pleasure from said calls and visits then I guess it beats watching daytime TV.

Re: Two disconnections on 50mb
 

Nice when you've got a choice to go elsewhere..

Not had a problem with VM apart from the fact I would like a continous bank of IP's and a faster upload... The faster upload just ain't gonna happen here until 2012 as we're restricted to ADSL (8mb though 6.5 as we're 1km from the exchange)

Re: Two disconnections on 50mb
 

You must be right in the middle of all the areas you discuss, they're all either being upgraded or in early tranches.

---------- Post added at 13:15 ---------- Previous post was at 13:12 ----------

3 significant outages and VM having no plans to perform the necessary work to resolve my issues is quite enough. After first week long outage was repeated within a month I was unhappy but stuck with it, teething trouble, another outage recently was enough.

I know why my area sucks, rather than rebuilding the network or upgrading it VM just crowbarred DOCSIS 3 onto it. Until they spend some serious time and money here it isn't adequate reliability wise for my needs.

Re: Two disconnections on 50mb
 

I'm dead smack between Luton and Bedford, UBR for me is Flitwick..

SO please tell me what can I expect?? ;) I can;t upgrade to 20/1 on the business package as they still haven't sorted out the sticky IP's on 20Mb. I'd love to know that I'll have options especially as my 2 year contract either ended last month or ends this month.

Re: Two disconnections on 50mb
 

Thicker string to go between the tin cans :p:

Re: Two disconnections on 50mb
 

What do you think I am... a Mancunian?????

Re: Two disconnections on 50mb
 

If they cannot get this right then and supply me what are my chances of getting out of the contract?

Re: Two disconnections on 50mb
 

Given your previous brushes with VM I would imagine them being ecstatic to see the back of you ;)

You've 30 days to back out of new contracts anyway.

---------- Post added at 14:14 ---------- Previous post was at 14:11 ----------

This would depend on your phone exchange I guess.

At 1km away though you should be good for 16+Mbit - I'm 1.4km away, 1.9km of string, and predicted 14.

Re: Two disconnections on 50mb
 

Even if the phone exchange has a 21CN upgrade date of q2 2011 :(

Re: Two disconnections on 50mb
 

No LLU?

Doesn't need to be 21CN, It's WBC / Wholesale Broadband Connect that is the interesting one.

Re: Two disconnections on 50mb
 

No LLU or btwc at all :(

Re: Two disconnections on 50mb
 

The Only LLU operators in my area are Sky but i had problems last year getting that fitted on a communal system, AOL, Orange, Cable and wireless, and Talk Talk.

Re: Two disconnections on 50mb
 

Strange to say, Connection this evening has been utterly flawless, ive been downloading emails, chatting, browsing and downloading at the same time and all fine.

This is the kind of speed im getting.
http://img246.imageshack.us/img246/4...re50mbs.th.jpg

Re: Two disconnections on 50mb
 

SOOOO! Annoyed now, tech came out today to look at my upstream, not only did he manage to rise my downstream by 5dBmv in the process and now my downstream is sluggish but also ONLY! managed to get my upstream power down by .25dBmv.

Why would an engineer up the downstream tap when the downstream was almost at 0dBmv across the board, then fit a 3dBmv Attenuator in order to get it to 5dBmv when the problem wasnt with downstream????!!!???

I rang him back and told him and he claims he will be back out this evening to undo what he did.

If he doesnt im gonna flip again at virgin!

This is all i get now and i cant even download my emails while i surf as websites wont open!

https://www.cableforum.co.uk/images/...2010/02/35.png

Re: Two disconnections on 50mb
 

You had two disconnects, your were unsure as to weather it was the modem or router.
By all accounts your connection didn't drop since you edited your post to say it had dropped again.

You got straight on to VM true to form, as soon as there is dust in your modem your calling/posting on the groups.

A tech has made a non existing problem worse.
Sympathy for you, I have non.

Re: Two disconnections on 50mb
 

So i have a non existing problem that they admitted to?LOL!

Yeah good one :-)

and it wasnt 2 discconnections, it was 4 disconnections and 154 T3 errors in 2 days.

Re: Two disconnections on 50mb
 

This bit I can't understand as it would infer that both 20Mb and 10Mb users would not be able to do it as they don't have enough d/l speed. (ie it takes more than 26Mb to do it)

Re: Two disconnections on 50mb
 

wow... your emails must be massive!!!! :shocked:

Re: Two disconnections on 50mb
 

Digital fanatic Thats just it they arnt lol thats the problem, the connection after he tinkered with it again was that bad i couldnt download emails using outlook and browse the net at the same time, it was as if it was strugling for bandwith...

Now hes just been again and put all back to where it was on the download side of things and it seems fine

https://www.cableforum.co.uk/images/...2010/02/34.png

http://img651.imageshack.us/img651/8...stfile1.th.jpg