Hi, I'm trying to capture and replay multicast traffic, and I've a problem with big packets.
I send UDP traffic from PC1 to PC2, and capture then on PC1 : $ tcpdump -w myCapture.pcap -s0 -i eth2 dst port 7767 Then I replay it on PC1 : $ tcpreplay --intf1=eth2 myCapture.pcap The traffics seems arrive, as shows me tcpdump on PC2: $ tcpdump -n -s0 -i eth2 dst port 7767 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes 15:58:36.938789 IP 192.168.2.42.40720 > 224.0.0.1.7767: UDP, length 9 15:58:37.939454 IP 192.168.2.42.40720 > 224.0.0.1.7767: UDP, length 2009 15:58:38.940371 IP 192.168.2.42.40720 > 224.0.0.1.7767: UDP, length 2009 15:58:39.941367 IP 192.168.2.42.40720 > 224.0.0.1.7767: UDP, length 2009 ... On PC2, I have a simple application which receive multicast packets. When I directly send traffic from PC1 to PC2, my application receive all the packets, but when I replay the same traffic with tcpreplay, it only receive the first packet, which is smaller. I tryed to send only small packets, and it works. Is there any option to modify the packets size which are recorded by tcpdump (I used the -s0 option)? Did I make a mistake in my tcpdump or tcpreplay command? Thanks a lot for your help. Best regards Violette ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Tcpreplay-users mailing list Tcpreplay-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tcpreplay-users Support Information: http://tcpreplay.synfin.net/trac/wiki/Support
