Checking internet connection

Alan McKinnon alan at linuxholdings.co.za
Sun Jul 2 18:16:36 UTC 2006


On Sun, 2006-07-02 at 13:32 -0400, ubuntu at rio.vg wrote:
> Dotan Cohen wrote:
> > On 02/07/06, ubuntu at rio.vg <ubuntu at rio.vg> wrote:
> >> Type 'traceroute www.google.com' on the command line, or 'mtr
> >> www.google.com' if you have mtr installed.
> >>
> >> Run traceroute a few times and you should be able to tell where the
> >> problem begins...
> >>
> > 
> > I had to install both of them. MTR is great- it appears that my router
> > is losing about 2% packets, the infrastructure is losing about 8%
> > packets, and the ISP is losing about 14%. What values are considered
> > good/ bad? All the hops along the way are losing between 2%-6%. Is
> > this normal? Also, should my router be losing 2% of the packets?
> > 
> > Thanks. I really, really appreciate the help.
> > 
> 
> All of those values are very bad.  I would first look at your router.
> Perhaps there's something wrong with your cabling?  Once your connection
> to your router is clean, then start talking to the infrastructure people...

Here in South Africa we have a wireless ISP (iBurst) where you run into
similar issues if the MTU is set wrong on your end. For normal internet
usage it's 1500, but this provider requires 1380 or so for best results.
Perhaps you have a similar situation.

alan





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