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From: Chris Hall <chris.hall@stackpath.com>
To: "users@dpdk.org" <users@dpdk.org>
Subject: [dpdk-users] pktgen - IP address randomness
Date: Mon, 22 May 2017 23:31:30 +0000	[thread overview]
Message-ID: <DM5PR10MB14180DB693EB33564F509E2B92F80@DM5PR10MB1418.namprd10.prod.outlook.com> (raw)

Hello,

pktgen-3.2.4

I Looking to get as much randomness out of src ip’s as possible. Using this config in lua…

        pktgen.src_ip('0', 'start',"0.0.0.1");
        pktgen.src_ip('0', 'min', "0.0.0.1");
        pktgen.src_ip('0', 'max', "255.255.255.254");
        pktgen.src_ip('0', 'inc', "1.1.1.1");

running a packet capture of 5Million packets on the receiving host, parsing the pcap file, based on source ip, seems I can only get about 32769 uniq ip's, (each connected about 150 times).

As a comparison I used hping3 with --rand-source option (5million packets) I can get about 4942744 uniq ip’s.

Is there a configure option(s) somewhere that could be tuned for more randomness or is the above parms just wrong ?

Thanks much.

  *   Chris




             reply	other threads:[~2017-05-22 23:31 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-22 23:31 Chris Hall [this message]
2017-05-23  5:16 ` Shyam Shrivastav
2017-05-23 11:50   ` Wiles, Keith
2017-05-23 11:49 ` Wiles, Keith

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