First thought is that you are using the "-K" or "--preload-pcap" option, and
your VM doesn't have enough memory available to reload a PCAP file. If not, we
need much more information including the version of tcpreplay, options, OS info
and any kernel logs. Also, what type of virtual machine are you using?
Fred.
From: Reham Mohamed <reham.fmoha...@gmail.com<mailto:reham.fmoha...@gmail.com>>
Reply-To: Main forum for tcpreplay
<tcpreplay-users@lists.sourceforge.net<mailto:tcpreplay-users@lists.sourceforge.net>>
Date: Friday, May 2, 2014 at 3:33 AM
To: Main forum for tcpreplay
<tcpreplay-users@lists.sourceforge.net<mailto:tcpreplay-users@lists.sourceforge.net>>
Subject: Re: [Tcpreplay-users] Generating flows between virtual hosts using
tcpreplay
Thanks a lot for your help.
Now i am trying to replay a pcap file on one virtual machine, but once the
computer starts to run this file, the whole system stop working. The pcap file
is almost 2 GB. What should i do to solve this problem?
Thanks
On Thu, May 1, 2014 at 6:32 PM, Sandeep Kumar
<sandeepdas....@gmail.com<mailto:sandeepdas....@gmail.com>> wrote:
If i'm not mistaken then tcpwrite/tcpedit is right tool to change pcap files.
Its simple to use. Just do a little bit of search and you will be easily able
to do that.
Regards,
Sandeep
On Thu, May 1, 2014 at 9:07 PM, Reham Mohamed
<reham.fmoha...@gmail.com<mailto:reham.fmoha...@gmail.com>> wrote:
Thanks for your reply.
I am a beginner in using tcpreplay. I could not understand how should i change
in the pcap file. The pcap file i am using contains a lot of packets that are
destined to many hosts other than host B i want to send the flows to. What i
want to do it forward the flows in the pcap file from host A to host B using
tcpreplay. What are the command i should use to be able to do so?
Thank you!
On Thu, May 1, 2014 at 5:10 PM, Sandeep Kumar
<sandeepdas....@gmail.com<mailto:sandeepdas....@gmail.com>> wrote:
You need to edit your pcap files before playing them using tcpreplay.
So for example in your pcap file there are few packets which you want to be
destined to a certain Host A's IP X.X.X.X.
You need to change the destination IP address of packets in your pcap file and
set it to IP address of Host A X.X.X.X along with that you need to change the
destination MAC address and set it to the either the MAC of next switch or the
MAC of Host A.
Make sure that you set proper Checksum at both Network and transport level.
Then play your file using tcpreplay the packets will reach to required
destination.
Regards,
Sandeep
On Thu, May 1, 2014 at 7:48 PM, Reham Mohamed
<reham.fmoha...@gmail.com<mailto:reham.fmoha...@gmail.com>> wrote:
Hello,
I am using mininet to create an emulated topology which contains two switches,
each one of them is connected to two hosts. I am trying to use tcpreplay to use
a pcap file to generate flows from host 1 to host 2. How can this be done? how
can i sent flows using pcap files from one host to another?
Your help is highly appreciated,
Thanks in advance,
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