So if I want to do testing between machine A and B I can route all of
the traffic trough a machine C with dummynet and simulate the network
environment that I need?

Basically I want to test/experiment with the send/receive settings
within the servers.

What about a hardware appliance? Could this be set up using a QOS policy
or something similar with a switch?

Thanks for the advice.
Max

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:owner-freebsd-questions@;FreeBSD.ORG] On Behalf Of Dan Nelson
Sent: Sunday, November 03, 2002 6:05 PM
To: Max Clark
Cc: [EMAIL PROTECTED]
Subject: Re: How to simulate high latency links?

In the last episode (Nov 03), Max Clark said:
> Hi,
>
> I am looking for a way to do some performance testing/tuning in a lab
> environment. I have a high latency low speed link (T1/200MS) that I
need
> to replicate.
>
> Are there any ways to do this with FreeBSD?

dummynet is what you want.  By redirecting traffic through a dummynet
pipe with ipfw, you can simulate latency and packet loss.  See the ipfw
and dummynet manpages.

--
        Dan Nelson
        [EMAIL PROTECTED]

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