[j-nsp] Finding drops

Dave Bell me at geordish.org
Mon Jan 21 15:38:20 EST 2019


Are you sure your tester is capable of generating that volume of traffic?

Dave

On Mon, 21 Jan 2019 at 20:09, Jason Lixfeld <jason-jnsp at lixfeld.ca> wrote:

> Hi all,
>
> I’m doing some RFC2544 tests through an MX204.  The tester is connected to
> et-0/0/2, and the test destination is somewhere out there via et-0/0/0.  64
> byte packets seem to be getting dropped, and I’m trying to find where on
> the box those drops are being recorded.
>
> I’ve distilled the test down to generating 100 million 64 byte (UDP)
> packets to the destination, but the counters on et-0/0/2 read as though
> they’ve only received about 76.6% of those packets.
>
> If I change the test to send 100 million 100 byte packets, the counters on
> et-0/0/2 account for all packets.
>
> I’ve tried looking at various output to find a counter that registers the
> missing packets, but I’m not having any luck.
>
> Aside from 'show interface et-0/0/2 extensive’, I’ve looked here with no
> luck:
>
> show interface queue et-0/0/2
> show pfe statistics traffic detail
> show pfe statistics exceptions
> show pfe statistics error
>
> Somewhere else I should be looking?
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