Re: level3.net in Chicago - high packet loss?!?

[Network Fortius <netfortius () gmail com>]

And how exactly would you interpret the number returned by net_loss  
(int), in a column called "LOSS", in reference to reachability of a  
"hop" between two end points:

int net_loss(int at)
{
  if ((host[at].xmit - host[at].transit) == 0)
    return 0;
  /* times extra 1000 */
  return 1000*(100 - (100.0 * host[at].returned / (host[at].xmit -  
host[at].transit)) );
} ?

Thanks,
Stef
Network Fortius, LLC


On Sep 6, 2005, at 7:45 AM, Robert E.Seastrom wrote:

> Network Fortius <netfortius () gmail com> writes:
>
>
> > Anybody having any idea why such a high packet loss on lever3's
> > network, in Chicago?
>
> End-user misinterpreting output from MTR.  This network does not
> appear to have any packet loss end-to-end.
>
>                                         ---Rob
>
>
>
> > Stef:~ scm$ mtr -r www.yahoo.com
> > ...
> > tbr1-p010802.cgcil.ip.att.net             0%    16   16   15.12
> > 24.21   49.26
> > ggr2-p310.cgcil.ip.att.net                0%    16   16   13.18
> > 42.66  118.99
> > so-1-1-0.edge1.chicago1.level3.net        0%    16   16   14.48
> > 35.84  126.48
> > so-2-1-0.bbr1.chicago1.level3.net        63%     6   16   14.44
> > 43.74   79.97
> >                                                                     
> > ^^^^^^^
> > as-1-0.bbr2.sanjose1.level3.net           0%    16   16   61.95
> > 80.64  176.01
> > ge-10-2.ipcolo3.sanjose1.level3.net       0%    16   16   63.37
> > 95.61  148.46
> > unknown.level3.net                        0%    16   16   63.34
> > 86.46  168.62
> > unknown-66-218-82-217.yahoo.com           0%    16   16   62.09
> > 88.91  127.58
> > p4.www.scd.yahoo.com                      0%    16   16   64.51
> > 89.96  183.79
> >
> > TIA,
> > Stef
> > Network Fortius, LLC