On Mon, Jul 27, 2015 at 10:47:18AM +0000, Unnikannan Nair, Jishnu wrote: > > Hi > Do you have any suggestions for me to solve this issue about wrong number of > packets shown?? > > Regards > Jishnu > > > > > -----Original Message----- > From: Unnikannan Nair, Jishnu > Sent: 24. juli 2015 02:48 PM > To: 'Vadim Kochan'; '[email protected]' > Subject: RE: [netsniff-ng] captured packets > > Hi > I connected an old COTS sniffer, used by our network team to check if it was > fault with network, but that sniffer can capture the whole packets as said by > tcpreplay, where as netsniff-ng still shows a lower value, while it doesn't > show any packet drops. > > Regards > Jishnu > > > -----Original Message----- > From: Vadim Kochan [mailto:[email protected]] > Sent: 24. juli 2015 01:25 PM > To: Unnikannan Nair, Jishnu > Cc: '[email protected]' > Subject: Re: [netsniff-ng] captured packets > > On Fri, Jul 24, 2015 at 11:01:48AM +0000, Unnikannan Nair, Jishnu wrote: > > Hi > > I'm trying to check if there are any packet loss going on when doing a > > packet capture dump using netsniff-ng using tcpreplay. I used netsniff to > > log the verbose output of the whole capture and check if there any dropped > > packets. The log shows zero dropped packets. So I used a script to add all > > the packets captured by netsniff-ng but it seems the value I got is not the > > same as the value shown by tcpreplay at the end of the capture, Why is > > that?? > > TCP replay send 27388000 and netsniff-ng gets 27386202 with zero dropped > > packets on the log file. > > > > > > TCPreplay : > > > > tcpreplay -i eth1 -M 90Mbps --loop 100 --preload-pcap --sleep-accel=1 > > /share/capture/job1/*.pcap > > Output: > > Actual: 27388000 packets (13649364800 bytes) sent in 1173.92 seconds. > > Rated: 11627168.0 bps, 88.71 Mbps, 23330.38 pps > > Statistics for network device: eth1 > > Attempted packets: 27388000 > > Successful packets: 27388000 > > Failed packets: 0 > > Retried packets (ENOBUFS): 0 > > Retried packets (EAGAIN): 0 > > > > Netsniff-ng: > > > > netsniff-ng -d eth1 --out=/share/capture/ --prefix="job1_" -s -ring-size > > 4096 --interval 2MiB -f "dst net 224.10.10 or dst net 224.11.11" -b 1-4 -V > > > /share/capture.log > > > > capture log : > > > > > > pcap file I/O method: scatter-gather > > RX,V3: 4096.00 MiB, 65536 Blocks, each 65536 Byte allocated > > IRQ: eth1:19 > CPU4 > > Running! Hang up with ^C! > > HI, > > What is the netsniff-ng version which is used in this particular example ? > Or it was compiled from the up-to-date sources ? >
Hi, I am planning do some testing and investigating but with iperf + netsniff-ng + network namespaces, but really currently I dont have time to do it, only at least in few next days. Sorry for the delay! I keep in mind your issue! Regards, -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
