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TCP_WINDOW_SIZE.Iperf3 -s - Server listening on 5201 - Compile it using the make command # make. The TCP window size option can be set by the environment variable Indicates options that support a K or M suffix for kilo- or mega. v, -version print version information and quit
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y, -reportstyle C report as a Comma-Separated Values x, -reportexclude exclude C(connection) D(data) M(multicast) S(settings) V(server) reports Z, -linux-congestion set TCP congestion control algorithm (Linux only) T, -ttl # time-to-live, for multicast (default 1) P, -parallel # number of parallel client threads to run L, -listenport # port to receive bidirectional tests back on I, -stdin input the data to be transmitted from stdin F, -fileinput input the data to be transmitted from a file t, -time # time in seconds to transmit for (default 10 secs) r, -tradeoff Do a bidirectional test individually n, -num # number of bytes to transmit (instead of -t) d, -dualtest Do a bidirectional test simultaneously c, -client run in client mode, connecting to b, -bandwidth # for UDP, bandwidth to send at in bits/sec O, -source specify source for Source Specific Multicast -X, -interface specify interface for Source Specific Multicast U, -single_udp run in single threaded UDP mode N, -nodelay set TCP no delay, disabling Nagle's Algorithm M, -mss # set TCP maximum segment size (MTU - 40 bytes) C, -compatibility for use with older versions does not sent extra msgs B, -bind bind to, an interface or multicast address w, -window # TCP window size (socket buffer size) p, -port # server port to listen on/connect to o, -output output the report or error message to this specified file m, -print_mss print TCP maximum segment size (MTU - TCP/IP header) l, -len # length of buffer to read or write (default 8 KB) i, -interval # seconds between periodic bandwidth reports f, -format format to report: Kbits, Mbits, KBytes, MBytes Inside that help output you should now see new SSM specific attributes -X and -0 used for selecting out interface and source IP for multicast group. You can check if it is working by trying to see the output of Iperf help. Now you should be able to use new Iperf app. Start building Iperf app with configure, make, make install commands: iperf-ssm-master]#. Inflating: iperf-ssm-master/src/tcp_window_size.cĬheck if you now have new “iperf-ssm-master” folder inside /root ~]# lsĮnter “iperf-ssm-master” directory ~]# cd iperf-ssm-master/ ~]#sudo yum remove iperfĮxtract downloaded file ~]#unzip master.zip If you don’t have one, server will tell that to you when you hit enter. Remove currently existing Iperf installation if you have one. Place yourself inside root directory where we will build our new Iperf version ~]#cd /rootĭownload special SSM enabled Iperf version into /root directory ~]#wget
COMMAND TO INSTALL IPERF2 MAC DOWNLOAD
Install tools needed to download files from the internet and unzip them ~]#yum install unzip Here are few steps that should work from your Cent OS 6.8 Linux Server and hopefully from other similar distributions to:
COMMAND TO INSTALL IPERF2 MAC HOW TO
The idea here is to show how to make this version of Iperf work on your Cent OS or similar Linux machine. Fortunately there are always some developers which are interested in networking so one of them developed a special Iperf version 2.0.5 with SSM support. I was aware that Iperf is a good enough tool to generate and measure multicast and unicast traffic but support for SSM was missing from current version.
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I was preparing lab environment to test configuration of Source-Specific Multicast on Juniper SRX Equipment and needed a tool to generate and measure Source-Specific Multicast streams.