Cable Forum - View Single Post - Modem rebooting frequently. Upstream problems in Woking.

DeadKenny · 07-09-2004, 11:02

Okay, thought it would be better to summarise my problems in one place rather than on the back of other people's threads.

The story so far...

26th August 2004, Cable Modem had rebooted during the early hours of the morning and my router needed a kick which made it pick up a new IP address. I noticed at this point that the UBR addresses have changed too.

Since then I'm getting slow upstream traffic causing my web server to be painfully slow (including trying to access via secure shell from work), plus when browsing at home web sites are slow to connect to with almost every request requiring a refresh several times to get the pages to load.

On investigation when IM'ing with (what I assume is) an NTL guy, we work out that this is due to my 58 upstream power level (right on the limit, though it has been for a year without problems), and this can cause packet loss. Sure enough when tested with pings to the UBR, there's a load of packet loss (but none when pinging the modem).

Then on the 2nd September, my cable modem starts rebooting frequently, mostly during daytime hours. This is due to it failing to lock onto the upstream signal (see my avatar). It generally goes down mid-morning and recovers in the evening. It's been like this ever since so I'm now without broadband for the majority of the time except a short slot in the evening.

So, I try calling tech support only to be told by the automated messages that they are having "technical difficulties" and probably can't help as a result, may have to wait a while to get to speak to anyone, and then promptly get cut off when I pick an option to speak to someone.

I try using the email support form on the ntlworld site, only to get a reply to call on the tech support number instead.

As some may remember, I had the same problem a couple of years back, pretty much shortly after I got the cable modem, and it was an on and off problem where it would be down for days, weeks at a time, and then okay for months. Official tech support were no help, but certain people at nthellworld.com sorted me out. There were two fixes as I remember, one was to actually connect the new coax line that had been pulled some months earlier as I was still split off the downstairs flat, though it made no difference to the upstream power, and the other was to tweak something in the green box down the road, although the upstream power always remained between 55 and 58, but at least the connection stayed and it's been like that for a year, until the 26th.

According to another post here there was some work done in Woking on the 26th, which would explain the IP change, and with the new UBR IP address perhaps the UBR has been "upgraded" and it's now knackered power levels or something?

07-09-2004, 11:02	#1
DeadKenny Inactive Join Date: Jul 2003 Location: Woking Age: 53 Services: PlusNet 2Mbps Premier. BT. Sky Digital. TiVo. Posts: 273	Modem rebooting frequently. Upstream problems in Woking. Okay, thought it would be better to summarise my problems in one place rather than on the back of other people's threads. The story so far... 26th August 2004, Cable Modem had rebooted during the early hours of the morning and my router needed a kick which made it pick up a new IP address. I noticed at this point that the UBR addresses have changed too. Since then I'm getting slow upstream traffic causing my web server to be painfully slow (including trying to access via secure shell from work), plus when browsing at home web sites are slow to connect to with almost every request requiring a refresh several times to get the pages to load. On investigation when IM'ing with (what I assume is) an NTL guy, we work out that this is due to my 58 upstream power level (right on the limit, though it has been for a year without problems), and this can cause packet loss. Sure enough when tested with pings to the UBR, there's a load of packet loss (but none when pinging the modem). Then on the 2nd September, my cable modem starts rebooting frequently, mostly during daytime hours. This is due to it failing to lock onto the upstream signal (see my avatar). It generally goes down mid-morning and recovers in the evening. It's been like this ever since so I'm now without broadband for the majority of the time except a short slot in the evening. So, I try calling tech support only to be told by the automated messages that they are having "technical difficulties" and probably can't help as a result, may have to wait a while to get to speak to anyone, and then promptly get cut off when I pick an option to speak to someone. I try using the email support form on the ntlworld site, only to get a reply to call on the tech support number instead. As some may remember, I had the same problem a couple of years back, pretty much shortly after I got the cable modem, and it was an on and off problem where it would be down for days, weeks at a time, and then okay for months. Official tech support were no help, but certain people at nthellworld.com sorted me out. There were two fixes as I remember, one was to actually connect the new coax line that had been pulled some months earlier as I was still split off the downstairs flat, though it made no difference to the upstream power, and the other was to tweak something in the green box down the road, although the upstream power always remained between 55 and 58, but at least the connection stayed and it's been like that for a year, until the 26th. According to another post here there was some work done in Woking on the 26th, which would explain the IP change, and with the new UBR IP address perhaps the UBR has been "upgraded" and it's now knackered power levels or something?