[j-nsp] strange packet loss without impact

[Matthias Brumm]

Hi!

Links are on 1000 Mbit full duplex. Anything else would result in errors on
the links.

Regards,

Matthias

2011/7/4 Adam Leff <adam at leff.co>

> I realize this will sound silly, but have you checked for half-duplex
> on your interfaces?
>
> Those onboard J6350 interfaces are actually 10/100/1000, so if you
> don't have the speed and link-mode hardcoded,  do a show interfaces
> extensive ge-0/0/# and check the link partner section to ensure you're
> running full-duplex.
>
> Adam
>
> On Jul 4, 2011, at 7:01, Matthias Brumm <matthias at brumm.net> wrote:
>
> > Hello!
> >
> > Since some weeks now, we have a strange packet loss on one of our edge
> > locations.
> >
> > A few days ago an IX informed us about packet loss on our router. The
> router
> > in place is a J6350. We have a 1 Gig line to us and two 1 Gig lines to
> some
> > uplinks. Every communication goes through a 1 Gig copper link to a
> ProCurve
> > 2810-24G. So the external links are connected to the switch and the
> switch
> > via one cable with the router.
> >
> > The packet loss is strange, because:
> >
> > 1. In smokeping during the busy hours of the day, there are losses of
> about
> > 5%
> > 2. From my workstation I get packet loss of about 10 up to 50%
> > 3. There are no errors on the switch or router interface (except i.e.
> VLAN
> > errors)
> > 4. no customers have reported any problems. But there are many customers
> > relying on real time communication (VoIP/RDP)
> > 5. The switch port with the router is showing maximum 200 Mbit
> > 6. The router is showing 20% real-time threads
> >
> > According to the datasheet the J-Series should be able to deliver this
> > performance easily. Or are the onboard Gig-Interfaces the problem? Of
> course
> > I know, that this physical configuration is a bad idea, and I will change
> is
> > very soon to ease the load on this particular port.
> >
> > Any other ideas?
> >
> > Regards,
> >
> > Matthias
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>