On Tue, Sep 25, 2012 at 7:20 PM, Richard Blalock <[email protected]> wrote: > Tcpreplay is getting packets out of sequence if I replay them at anything
Not sure what you mean by "Tcpreplay getting packets out of sequence"? Tcpreplay doesn't "get" packets, it only sends them. > even close to original speed. I have to slow them down to around 1/100th of > the original speed in order for them to get back and forth in correct > sequence. The packets are being replayed through the exact same DUT, so the > latency should be identical. I've manually edited the ARP tables, so there > shouldn't be any ARP requests to slow it down. Any idea why this is > happening? Are you saying that the DUT is seeing the packets out of order? Tcpreplay only sends the packets in order of the pcap- it's not multi-threaded and there's no mechanism to skip around a pcap file. If you're seeing a problem with out of order packets being sent, then it's something to do with your kernel, or NIC/NIC driver. If you're running linux on your tcpreplay box, try: tcpdump -i any -s0 -w test.pcap and see if you're seeing the problem there. That or something with how you are checking for packet order is the cause of the problem or some intermediary device causing the problem. For example if you're going through a modern switch which has a store & forward architecture, that can change the order of packets. Sorry I don't have a good answer, but I really have no idea what your test bed looks like and have no way of reproducing it. -- Aaron Turner http://synfin.net/ Twitter: @synfinatic http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin "carpe diem quam minimum credula postero" ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Tcpreplay-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/tcpreplay-users Support Information: http://tcpreplay.synfin.net/trac/wiki/Support
