Tcpreplay Examples. Tcpreplay package official download Hi im looking for the official rpm of that package for redhat 7 all that i found is this: RPM RedHat EL 7 tcpreplay 4.1.0 x8664 rpm is that the correct one? Looks likes a fedora one.
gtod [default] - Use a gettimeofday() loop
abstime - Use OS X's AbsoluteTime API
--sleep-accel=number
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Reduce the amount of time to sleep by specified usec. This option takes an integer number as its argument. The default number for this optionis:
0
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.
--rdtsc-clicks=number
Specify the RDTSC clicks/usec. This option may appear up to 1 times. This option takes an integer number as its argument. The default number for thisoption is:
0
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
-v, --verbose
Print decoded packets via tcpdump to STDOUT. This option may appear up to 1 times.
-Astring, --decode=string
Arguments passed to tcpdump decoder. This option may appear up to 1 times. This option must appear in combination with the following options: verbose.
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.
-K, --enable-file-cache
Enable caching of packets to internal memory. This option must appear in combination with the following options: loop.
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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.
--preload-pcap
Preloads packets into RAM before sending.
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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.
-cstring, --cachefile=string
Split traffic via a tcpprep cache file. This option may appear up to 1 times.
-istring, --intf1=string
Server/primary traffic output interface. This option may appear up to 1 times.
-Istring, --intf2=string
Client/secondary traffic output interface. This option may appear up to 1 times. This option must appear in combination with the following options:cachefile.
--listnics
List available network interfaces and exit.
-lnumber, --loop=number
Loop through the capture file X times. This option may appear up to 1 times. This option takes an integer number as its argument. The value of numberis constrained to being:
The default number for this option is:
1
--pktlen
Override the snaplen and use the actual packet len. This option may appear up to 1 times.
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.
-Lnumber, --limit=number
Limit the number of packets to send. This option may appear up to 1 times. This option takes an integer number as its argument. The value of numberis constrained to being:
The default number for this option is:
-1
By default, tcpreplay will send all the packets. Alternatively, you can specify a maximum number of packets to send.
-xstring, --multiplier=string
Modify replay speed to a given multiple. This option may appear up to 1 times. This option must not appear in combination with any of the following options:pps, mbps, oneatatime, topspeed.
Specify a floating point value to modify the packet replay speed. Examples:
-pnumber, --pps=number
Replay packets at a given packets/sec. This option may appear up to 1 times. This option must not appear in combination with any of the following options:multiplier, mbps, oneatatime, topspeed. This option takes an integer number as its argument.
-Mstring, --mbps=string
Replay packets at a given Mbps. This option may appear up to 1 times. This option must not appear in combination with any of the following options:multiplier, pps, oneatatime, topspeed.
Specify a floating point value for the Mbps rate that tcpreplay should send packets at.
-t, --topspeed
Replay packets as fast as possible. This option must not appear in combination with any of the following options: mbps, multiplier, pps, oneatatime.
-o, --oneatatime
Replay one packet at a time for each user input. This option must not appear in combination with any of the following options: mbps, pps, multiplier,topspeed.
Allows you to step through one or more packets at a time.
--pps-multi=number
Number of packets to send for each time interval. This option must appear in combination with the following options: pps. This option takes an integernumber as its argument. The value of number is constrained to being:
The default number for this option is:
1
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.
-P, --pid
Print the PID of tcpreplay at startup.
--stats=number
Print statistics every X seconds. This option takes an integer number as its argument. The value of number is constrained to being:
Note that this is very much a 'best effort' and long delays between sending packets may cause equally long delays between printing statistics.
-V, --version
Print version information.
-h, --less-help
Display less usage information and exit.
-H, --help
Display usage information and exit.
-!, --more-help
Extended usage information passed thru pager.
- [rcfile], --save-opts[=rcfile]
Save the option state to rcfile. The default is the last configuration file listed in the OPTION PRESETS section, below.
-rcfile, --load-opts=rcfile, --no-load-opts
Load options from rcfile. The no-load-opts form will disable the loading of earlier RC/INI files. --no-load-opts is handled early, outof order.
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.
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.
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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.