Hi Tobi,

Did you try with an other VDSL-CPE?

I remember that a swisscom technician mentioned, that fritzbox do have strange behaviors sometimes.

saludos miguel

On 25.04.13 14:58, Tobias Oetiker wrote:

We have this VDSL2 line at one of our customer sites, which aquired high packet loss from one day to the other ...

we are using a fritzbox 7390 at the site and according to its log there are no problems, also the DSL Information tab does no count a high number of errors ...

Here are the smokeping observations of the link

http://oss.oetiker.ch/smokeping-demo/?displaymode=n;start=2013-01-15%2013:50...

Any hints on getting this fixed.

cheers tobi

Hello Tobias

On 25.04.2013 14:58, Tobias Oetiker wrote:

We have this VDSL2 line at one of our customer sites, which aquired high packet loss from one day to the other ...

Did you turn off and on the device once since the high packet loss started? Eventually it could create a more stable DSL link. Could be noise from neighbors lines.

Any hints on getting this fixed.

I am not sure if mine will help, but it is probably worth a try. Else you should probably escalate this to your ISP, which then would check with Swisscom.

bye Fabian

Hi Tobias, maybe a look into the DSL spectrum display in the fritzbox will show some hint to decide its DSL related or just on the Network level it need a bit experiences to interpret that display, but basically if there are gaps in the spectrum there is definitely something wrong. could be the splitter or even the cable passing a waterfilled tube.

an simple u72 passing 4m water can cause strange effects, which you even will see in the spectrum. i experienced once at a client site someone drilled holes in the wall for mounting speakers, he cut a bit of insulation of the cable and the screw was making contact to one of the wires. Every switch off of the FL lamps in that office caused the link to retrain.

Roger

Am 25.04.2013 09:58, schrieb Tobias Oetiker:

We have this VDSL2 line at one of our customer sites, which aquired high packet loss from one day to the other ...

we are using a fritzbox 7390 at the site and according to its log there are no problems, also the DSL Information tab does no count a high number of errors ...

Here are the smokeping observations of the link

http://oss.oetiker.ch/smokeping-demo/?displaymode=n;start=2013-01-15%2013:50...

Any hints on getting this fixed.

cheers tobi