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Date:      Thu, 20 Sep 2001 12:47:44 -0700
From:      rick norman <rick.norman@lmco.com>
To:        freebsd-hackers@freebsd.org
Subject:   ipfw and dummynet
Message-ID:  <3BAA47DF.5924E6B6@lmco.com>

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I tried "questions" for this but no answer.

I am attempting to use ipfw and dummynet to instrument some network
traffic tests.  I am running freebsd 4.3 release and have built the
kernel
with ipfirewall, dummynet, and default to enabled.  For a simple test, I

added a pipe "ipfw add pipe 1 icmp from any to any".  When I ping this
machine, I can do "ipfw pipe 1 show" and watch the counters increment,
but the machine doing the pinging does not see a response to the ping.
That's
my first question.  Next, when I try to delete the pipe, "ipfw pipe 1
delete", it
won't delete.  The only way I can get rid of it is to do a flush. That's

the second
question.  Third question, if I type "ipfw pipe 1 config bw 10Bytes/s",
I would
expect the bw to be limited and the counters to reflect this limit.  The

counters
indicate no change in the 64 byte/s generated by my windows client.

I have read the man pages for ipfw, dummynet, and ipfirewall.  If these
are
obvious questions, I would appreciate a pointer to a good reference.

Thanks



--

Logically speaking, logic is not the answer.

Rick Norman
rick.norman@lmco.com
408 742 1619



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