Packet Loss After Maintenance
 

Can anybody shed any light on this problem, all was well with the internet until it went off on Monday due to essential maint (according to the service status page) since then download speeds are slow and connecting to websites is really slow:-

Tbb Graph

http://www.thinkbroadband.com/ping/s...f4cbc2a5a.html

The big red bit is where my missus turned the s/hub off last night


Downstream :-


Downstream
DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 290750000 Hz 282750000 Hz 298750000 Hz 306750000 Hz 314750000 Hz 322750000 Hz N/A N/A
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked N/A N/A
Channel ID 39 38 40 41 42 43 N/A N/A
Modulation QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 N/A N/A
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 N/A N/A
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 N/A N/A
Power Level (dBmV) -0.3 dBmV -0.2 dBmV -0.6 dBmV -1.0 dBmV 0.2 dBmV 0.1 dBmV N/A N/A
RxMER (dB) 40.3 dB 40.2 dB 40.4 dB 40.3 dB 39.9 dB 40.3 dB N/A N/A

Upstream

Upstream
US-1 US-2 US-3 US-4
Channel Type 2.0 N/A N/A N/A
Channel ID 58 N/A N/A N/A
Frequency (Hz) 35800000 Hz N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation QAM16 N/A N/A N/A
Symbol Rate (Sym/sec) 5120000 N/A N/A N/A
Mini-Slot Size 128 N/A N/A N/A
Power Level (dBmV) 40.0 dBmV N/A N/A N/A
T1 Timeouts 0 N/A N/A N/A
T2 Timeouts 0 N/A N/A N/A
T3 Timeouts 43 N/A N/A N/A
T4 Timeouts 0 N/A N/A N/A

I don't know what the essential Maint was but there where 3 Virgin vans at the box over the road from me
Any Ideas?

Thanks
Dave

Re: Packet Loss After Maintenance
 

i think they are busy doing lots of work for upstream upgrades atm. I have seen loads of vans around my area as well. You might find that if there was a fault they have done something to get you back up and running but it won't be 100% until they have carried out all the repair work which might take a couple of days. Power levels are fine though.

Re: Packet Loss After Maintenance
 

Thanks, but I didn't have a fault before they started doing the work and the service status shows that Broadband service is Good (I think not)

Dave

Re: Packet Loss After Maintenance
 

From the TBB I'd say whatever they've done has put noise on your upstream. Something the techs on the VM forum can check - but that would need sorting as everyone on your segment on the same upstream channel would be affected. Can you ask any of your neighbours?

Re: Packet Loss After Maintenance
 

Thanks for replying but I have tried that but most of those that have Virgin are getting on a bit and don't know what I'm on about, and are a bit loath to let me have a play with their computers, (can't say I blame them), is there anyway to get Virgin interested as I feel that if I phone up CS I'll get the old " we can't find anything wrong from our end " scenario.

Dave

Re: Packet Loss After Maintenance
 

I know what you mean abou calling VM. Duringoffice hours, you can get a UK agent and they're good people. Just put the phhone down if you get India and try again.

Also there's the VM Commnity Forum (via virginmedia.com). The techs there take about 4 days to get round to you but they have all the tools necessary to check the upstream noise level. If you post there, just add that "Seph thought it might be upstream noise".

Keep us posted.

Re: Packet Loss After Maintenance
 

Thanks, have done will give it a few days and see if I get anywhere.

Dave

Re: Packet Loss After Maintenance
 

Gave CS a ring and got straight through to a UK agent, confirmed there was a problem, sent a tech round today, who confirmed that the Wirral area has been having a lot of upgrade work done and that this had introduced a lot of noise on the system as you rightly said. Things have improved since Sun afternoon and I now have a ticket number and a proposed completion date.So hopefully it will be sorted properly very soon.

Dave

Re: Packet Loss After Maintenance
 

turn your equipment off, wait 30odd seconds then power up. stability should be restored.

Re: Packet Loss After Maintenance
 

Whereabouts in the country are you?

Re: Packet Loss After Maintenance
 

Wallasey,Wirral, CH44.

Dave

Re: Packet Loss After Maintenance
 

In this scenario there's one important reason for trying that but you omitted the explanation, so the user might well be none the wiser even if it was successful for an indeterminate period of time?

Care to elaborate on your suggestion? or is this simply another one of your cloned "dunno why but seems like a fing everyone else try's" efforts? :rolleyes:

Re: Packet Loss After Maintenance
 

route work done on the network has caused some form of cockup. a re-sync seems to bring back stability. with regards to packet loss, i dont know.

Re: Packet Loss After Maintenance
 

A some what generic answer that is singularly uninformative and even more confusing when you don't appear to know how your suggestion could potentially relate to the users actual packet loss symptoms?

Further more the potential clues are already there in previous posts! ;)
So now you've re-read them, let's start again from basics:

1.What specifically do you think the probable "route work" on the network entails given the context of previous diagnosis and consequent corroborative information that the OP has apparently obtained from support?

2.Again given the packet loss/noise and where it (most likely) occurs in that context what do you think might possibly change when the OP reboots his CM/Hub?

3.Thus what should you have ideally suggested the OP checks before and after he reboots?

….and your bonus question -
4. Similarly the converse - if it doesn't change what is likely to prevent it?

Re: Packet Loss After Maintenance
 

@ daveybm - could you please post ping monitor results for the 16th, 17th and 18th