Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!shadooby!ginosko!usc!sargas.usc.edu!tli
From: tli@sargas.usc.edu (Tony Li)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  Counting Internet Hosts (and Users)
Message-ID: <20444@usc.edu>
Date: 11 Oct 89 07:34:36 GMT
References: <8910101451.AA01170@interlan.interlan.com>
Sender: news@usc.edu
Reply-To: tli@sargas.usc.edu (Tony Li)
Organization: University of Southern California, Los Angeles, CA
Lines: 23

In article <8910101451.AA01170@interlan.interlan.com>
kasten@interlan.interlan.COM (Frank Kastenholz) writes: 
    Gee, 
    
    Seems like there is a simpler way to do it......
    
        for (i=0; i<0xffffffff; i++)
             foo = ping(i)
            if (foo == answered)
               number_of_hosts++;
    
    Its only an order n problem . . . no fancy protocols, no worrying about
    whether you are allowed to dump the domain tables, etc, etc...

Yes, but it probably takes about 136 YEARS to run (assuming that pings
take about 1 second to either respond or time out).

Thanks, but we're not young enough.

Tony Li - USC University Computing Services
Internet: tli@usc.edu	Uucp: usc!tli	Bitnet: tli@gamera, tli@ramoth
This is a test.  This is a only a test.  In the event of a real life
you would have been given instructions.