Name
tcpreplay - Replay network traffic stored in pcap files
There's PReplay for Windows, tcpreplay and capedit for Linux/UNIX, and then a bunch of specialized tools for replaying specific types of traffic, usually related to. I got the same problem like allan, but I have windows 7, I have unallocated disk space enough to install Centos 7, but the problem is that after install centos 7 at the boot time there is no option for windows 7,I read that Centos come with Grub2 but I am not sure if I missed something during the installation for that option. Hi, On the online manual, it was mentioned that to install tcpreplay on Windows, I will 'need to install Winpcap the port of libpcap for Windows. For whatever reason, it seems important that you install the Winpcap files in the Cygwin root directory (/Wpdpack).' What is meant by installing the winpcap files in the Cygwin root directory? With that said, you'll need Cygwin to compile/run tcpreplay. You'll also need to install Winpcap – the port of libpcap for Windows. For whatever reason, it seems important that you install the Winpcap files in the Cygwin root directory (/Wpdpack). Be sure to install both the driver and DLL files AND developer pack.
Synopsis
tcpreplay [-flag [value]].. [--opt-name [[=| ]value]]..
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- -q, --quiet Quiet mode.
- -Tstring, --timer=string
- Select packet timing mode: select, ioport, rdtsc, gtod, nano, abstime. This option may appear up to 1 times. The default string for this optionis: gtod
Print nothing except the statistics at the end of the run
Allows you to select the packet timing method to use:
nano - Use nanosleep() API
select - Use select() API
ioport - Write to the i386 IO Port 0x80
rdtsc - Use the x86/x86_64/PPC RDTSC
gtod [default] - Use a gettimeofday() loop
abstime - Use OS X' s='' absolutetime=''>
Reduce the amount of time we would normally sleep between two packets by the specified number of usec. This provides a 'fuzz factor' to compensate forrunning on a non-RTOS and other processes using CPU time. Default is disabled.
Override the calculated number of RDTSC clicks/usec which is often the speed of the CPU in Mhz. Only useful if you specified --timer=rdtsc
When enabling verbose mode (-v) you may also specify one or more additional arguments to pass to tcpdump to modify the way packets aredecoded. By default, -n and -l are used. Be sure to quote the arguments like: -A '-axxx' so that they are not interpreted by tcpreplay. Please see thetcpdump(1) man page for a complete list of options.
Cache pcap file(s) the first time they are cached in RAM so that subsequent loops don't incurr any disk I/O latency in order to increase performance. Makesure you have enough free RAM to store the entire pcap file(s) in memory or the system will swap and performance will suffer.
This option loads the specified pcap(s) into RAM before starting to send in order to improve replay performance while introducing a startup performance hit.Preloading can be used with or without --loop and implies --enable-file-cache.
By default, tcpreplay will send packets based on the size of the 'snaplen' stored in the pcap file which is usually the correct thing to do. However,occasionally, tools will store more bytes then told to. By specifying this option, tcpreplay will ignore the snaplen field and instead try to send packetsbased on the original packet length. Bad things may happen if you specify this option.
By default, tcpreplay will send all the packets. Alternatively, you can specify a maximum number of packets to send.
Specify a floating point value to modify the packet replay speed. Examples:
Specify a floating point value for the Mbps rate that tcpreplay should send packets at.
Cache pcap file(s) the first time they are cached in RAM so that subsequent loops don't incurr any disk I/O latency in order to increase performance. Makesure you have enough free RAM to store the entire pcap file(s) in memory or the system will swap and performance will suffer.
This option loads the specified pcap(s) into RAM before starting to send in order to improve replay performance while introducing a startup performance hit.Preloading can be used with or without --loop and implies --enable-file-cache.
By default, tcpreplay will send packets based on the size of the 'snaplen' stored in the pcap file which is usually the correct thing to do. However,occasionally, tools will store more bytes then told to. By specifying this option, tcpreplay will ignore the snaplen field and instead try to send packetsbased on the original packet length. Bad things may happen if you specify this option.
By default, tcpreplay will send all the packets. Alternatively, you can specify a maximum number of packets to send.
Specify a floating point value to modify the packet replay speed. Examples:
Specify a floating point value for the Mbps rate that tcpreplay should send packets at.
Allows you to step through one or more packets at a time.
When trying to send packets at very high rates, the time between each packet can be so short that it is impossible to accurately sleep for the requiredperiod of time. This option allows you to send multiple packets at a time, thus allowing for longer sleep times which can be more accuratelyimplemented.
How To Install Tcpreplay On Windows 10
Option Presets
Any option that is not marked as not presettable may be preset by loading values from configuration ('RC' or '.INI') file(s). The homerc fileis '$$/', unless that is a directory. In that case, the file '.tcpreplayrc' is searched for within that directory.
Signals
tcpreplay understands the following signals:
SIGUSR1 Suspend tcpreplay
SIGCONT Restart tcpreplay
See Also
tcpreplay-edit(1), tcpdump(1), tcpprep(1), tcprewrite(1), libnet(3)
Bugs
How To Install Tcpreplay On Windows Media Player
tcpreplay can only send packets as fast as your computer's interface, processor, disk and system bus will allow.
Packet timing at high speeds is a black art and very OS/CPU dependent.
Replaying captured traffic may simulate odd or broken conditions on your network and cause all sorts of problems.
In most cases, you can not replay traffic back to/at a server.
Some operating systems by default do not allow for forging source MAC addresses. Please consult your operating system's documentation and the tcpreplay FAQif you experience this issue.
Author
Copyright 2000-2010 Aaron Turner
For support please use the tcpreplay-users@lists.sourceforge.net mailing list.
The latest version of this software is always available from: http://tcpreplay.synfin.net/
Released under the Free BSD License.
This manual page was AutoGen-erated from the tcpreplay option definitions.
Referenced By
tcpbridge(1)