The first MAC address will be used for the server to client traffic and the optional second MAC address will be used for the client to server traffic. For support please use the tcpreplay-users lists. Pad or truncate packet data to match header length. Override output DLT encapsulation. Apparently this should always be 0, but if you can use any 1 byte value. 
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Specify a floating point value for the Mbps rate that tcpreplay should send packets at.
Bad things may happen if you specify this option. Loop through the capture file X times.
tcpreplay v releases: Pcap editing and replay tools for *NIX and Windows
Preloading can be used with or without --loop and implies --enable-file-cache. Description This manual page briefly documents the tcpreplay command. Specify a floating point value to modify the packet replay speed.
Allows you to step through one or more packets at a time.
tcpreplay(1) - Linux man page
When enabling verbose mode -v you may also specify one or more additional arguments to pass to tcpdump to modify the way packets are decoded. Hence, you should only use this if you know know that your Tcprelay provides the FCS when reading raw packets.
The value of number is constrained to being:. 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 required period of time. Takes a pair of comma deliminated ethernet MAC addresses which will replace the destination MAC address of outbound packets. This option must not appear in combination with any of the following options: Higher numbers increase verbosity.
This option may appear up to 1 times. For more details, please see the Tcpreplay Manual at: Replay one packet at a time for each user input. For support please use the tcpreplay-users lists.
Specify a floating point value for the Mbps rate that tcpreplay should send packets at. The latest version of this software is always available from: Each colon delimited port pair consists of the port to match followed by the port number to rewrite. This option may appear up to 2 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. The default string for this option is: Override default MTU length bytes.
tcpreplay(1) - Linux man page
By tcprepkay, tcpreplay will send packets based on the size of the "snaplen" stored in the pcap file which is usually the correct thing to do. The first MAC address will be used for the server to client traffic and the optional second MAC address will be used for the client to server traffic.
However, occasionally, tools will store more bytes then told to. If the IP address in the packet matches the first netblock, it is rewriten using the second netblock as a mask against the high order bits.
The default string for this option is: Split traffic via a tcpprep cache file.
Allows you to rewrite ethernet frames to add a By specifying this option, tcpreplay will ignore the snaplen field and instead try to send packets based on the original packet length. By default, no Tcreplay data link type conversion will be made. Make sure 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 allows you to send multiple packets at a time, thus allowing for longer sleep times which can be more accurately implemented.
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