What else could it be? - Page 4

Welshchris · 14-10-2009, 11:26

after about 2hrs so far ive noticed a few things..
1. on the Ambit 256 my upstream fluctuates upwards from 50dBmv to the highest ive seen it of 54dBmv and on the 50mb it fluctuates downwards from 49 to around 47.3.

2. on the new 50mb modem there are NO downstream or upstream lock errors occuring what so ever.

Welshchris · 15-10-2009, 20:26

i think i have worked out that the problem is now upstream related.

On 20mb modem used to reboot and not lock on.

on 50mb my connection stops, in network and sharing center, the connection between computer and network is fine, but network and internet drops for about 20 seconds.

Also when this is happening the upload lite on the modem blinks very slow.

Welshchris · 18-10-2009, 03:59

Virgin claim that my modem wasnt doing what i claimed it was.

This time i recorded it!

http://www.youtube.com/watch?v=i_wop8jMhKI

Welshchris · 19-10-2009, 10:24

I just recieved a call from a Virgin Network Engineer.

After being told "I cant prove im having the problem and its impossible im having the problem" another modem acting like mine was witnessed in Swansea just up the road on Saturday.

I have also recorded my problems for "Proof" and uploaded them to Youtube and they have seen it and admitted its the same problem and a problem with the BSR where its not assigning IPs properly to some modems and must be a config error as its only giving out 24hr leases to some modems and then dropping connections when they r up like mine.

Here are the vids...

http://www.youtube.com/watch?v=i_wop8jMhKI

http://www.youtube.com/watch?v=Q-N-4rZ37QQ

This one shows the modem a few mins later than the video above locked on but still unable to get a connection to the internet.

http://www.youtube.com/watch?v=xganVqIP9Ec

Kymmy · 19-10-2009, 10:27

Please keep to one thread about the same problem

JoeBloggs · 19-10-2009, 11:17

Hi

I think I maybe having the same problem as you Welshchris. For the last 3 weeks now (mostly everyday) my internet just dies, stone cold dead. It happens mostly overnight. Because every bloody morning I go to go look at the news and bang 'no connection'.

It's really annoying having to reset you CM + router everyday.

So do you think the same is happening to me? ie the 24hr thing?

I'm in swansea too btw.

JoeBloggs · 19-10-2009, 11:39

Here's my info.

Quote:

Information
Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant
MAC Address : xx:xx:xx:xx:xx:xx
Serial Number : xxxxxxxxxxxx
Boot Code Version : 1.1.2c
Software Version : 2.111.1001
Hardware Version : 1.9

Quote:

Downstream
Downstream Lock : Locked
Downstream Channel Id : 69
Downstream Frequency : 307000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 2.5 dBmV
Downstream SNR : 37.5 dB

Quote:

Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 47400000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 42.5 dBmV
Upstream Mini-Slot Size : 2

(Click pic below for the CM log)

JoeBloggs · 19-10-2009, 11:47

Here's another thought aswell, when its gone down, I've gone into my routers page (192.168.1.1) and normally you should see your virgin ip (ie 84.153.bla.bla), but I'm pretty sure it was showing 0.0.0.0.

So that would mean a problem on their end wouldn't it not? As if it cannot assign me an IP until the modem is rebooted.

Looks like you've nailed it on the head with assigning ip problem and expiring after 24hrs, this does sound very much like our problem.

Welshchris · 19-10-2009, 19:55

Quote:

Originally Posted by JoeBloggs

Here's another thought aswell, when its gone down, I've gone into my routers page (192.168.1.1) and normally you should see your virgin ip (ie 84.153.bla.bla), but I'm pretty sure it was showing 0.0.0.0.

So that would mean a problem on their end wouldn't it not? As if it cannot assign me an IP until the modem is rebooted.

Looks like you've nailed it on the head with assigning ip problem and expiring after 24hrs, this does sound very much like our problem.

i have an engineer contacting me in regards to this who is a member on here by the weekend, u seem to have identical issues as im having, i will pass ur name on here to him and have him contact u.

JoeBloggs · 19-10-2009, 23:38

Thanks! Hope you (we) get it sorted.

I've not had much problems with VM over the years, as you can probably tell I only show up on cableforum if I am pretty sure the problem is on there end, there does not seem to be any problems on my end.

All the best

Welshchris · 24-10-2009, 06:45

right for those having the probs we are having in Swansea or elsewhere this is what ive been updated on so far.....

We are looking at DHCP Server issues. There seems to be a problem with the way the spanning tree is put out on them, and also the false requests they are getting from Routers that cause them to either ignore the request or shut down the ports.

So basically whats happening instead of the IP Lease getting renewed or the modem getting issued with an IP at switch on neither happens and the ready light flashes with no connection what so ever.

So far although they know the problem is there they dont know where it is or how to fix it.

Welshchris · 27-10-2009, 12:24

Right ive now been told they r gonna try and get a repull organised....

But why cant they understand it doesnt lie in the cabling between my flat and the cabinet as this wouldnt be affecting all the other people in Swansea with identical issues!

Ignitionnet · 27-10-2009, 16:28

I must have missed where 3 people posting on here was indicative of everyone in Swansea.

I would imagine a few more complaints if this were affecting everyone in the Swansea area, would also be on the service status page. There's several posters here who are on the Swansea network who are, going by the lack of complaints from them, happily ticking over.

You realise that ex-ntl tech support is based in very close to Swansea and a lot of those guys would be using the Swansea network. I would imagine they would be quite aware of issues with their staff cable.

As posted previously by a tech on this thread and as you've reported there have been power fluctuations and a repull is a good idea if nothing else is evident.

If you have so little confidence you can give your month's notice at this time also.

Welshchris · 27-10-2009, 17:18

Quote:

Originally Posted by Broadbandings

As posted previously by a tech on this thread and as you've reported there have been power fluctuations and a repull is a good idea if nothing else is evident.

Thats where ur wrong, ive already stated and been told that the cabling is fine and that the problem is at the BSR. So why now are they stating the problem is with the cabling.

Also the other 3 people found just happen to be on the same part of the BSR
cpc2-cwma7-2-0-cust***.7-3.cable.virginmedia.com

and just happen to drop out at the EXACT same times as i do.

Ignitionnet · 27-10-2009, 17:24

That'll point to a fault with your local cabling in that case, assuming that everyone is dropping out simultaneously with you. Certainly doesn't indicate DHCP though, that'd kill everyone in the entire area off as their leases expired.

Given that you don't believe that DHCP is ok why are you so sure that the tech guys are correct saying that the cabling is fine, especially in light of how you originally reported this, as spiking upstream transmit power?

You do know that the local network engineers have absolutely no way of checking the 'spanning tree' on the DHCP servers, right?

Did you ever capture a report of how long one of the leases that the DHCP is giving you is?