[dpdk-users] pktgen w pcap file

Sara Gittlin sara.gittlin at gmail.com
Wed Jul 10 15:41:21 CEST 2019

Thank you Keith

On Wed, Jul 10, 2019 at 4:19 PM Wiles, Keith <keith.wiles at intel.com> wrote:

> The way Pktgen works is it loads the packets into memory until it fills up
> the number of buffers allocated, which I think is 8192 buffers. If you pcap
> file is more then that they are ignored.
> Pktgen has different modes for the transmitting packets, the PCAP is
> loaded and assign to a port, but it doe not mean they will be sent. The
> default mode is single packet mode and you have to enable PCAP file to be
> sent using the enable <portlist> pcap command. Then you have to do a start
> <portlist> on that port to send the pcap files. Each mode has its own set
> of buffers it can send, so you can switch to modes and be able to reenable
> pcap mode on a port to send the pcap buffers again.
> The pcap data loaded into memory will be sent over and over if you send
> more than the number of pcap packets you loaded. The way DPDK works it
> possible they will be send out of order :-(
> > On Jul 10, 2019, at 8:12 AM, Sara Gittlin <sara.gittlin at gmail.com>
> wrote:
> >
> > Hi all
> > I'm running the pkgen w pcap file ,  -s P:http.pcap
> > but i dont see any  pkts  in the receive side
> > Is pktgen automatically transmits the pcap after startup ? or i have to
> > manually run it from the cli ?
> > is it possible to run this pcap many times?
> > Thank you
> > -Sara
> Regards,
> Keith

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