Trying to make a Host into a gigabit hub for testing

[Shawn Saunders]

Chris,

Thanks for the quick response.  It looked good, but when I execute each 
command, I receive an Error on the following:

ngctl connect sf0: o2m lower many0

Returns: ngctl: send msg: No such file or directory

Did I miss something?

Shawn

>From: Chris Dionissopoulos <dionch at freemail.gr>
>Reply-To: dionch at freemail.gr
>To: Shawn Saunders <saundersconsult at hotmail.com>
>CC: freebsd-net at freebsd.org
>Subject: Re: Trying to make a Host into a gigabit hub for testing
>Date: Thu, 20 Oct 2005 03:27:41 +0300
>
>SS>I am setting up a test environment with multiple IDS's.  ngctl looks 
>like a solution but it is not broadcasting all packets to all interfaces as 
>the documentation appears to state it should.  I've probably made some 
>error in configuration.
>SS>
>SS>My goal is to put em0 into a spanned port in promiscuous mode and 
>broadcast all traffic from that port out the other network interfaces.  I 
>plan on having em0 (gigabit) and 6 other gigabit interfaces.  Each will 
>then echo the same traffic to six other machines (IDS's) for testing.
>SS>
>SS>The proof of concept with a gigabit (EM0) and 4 10/100 ethernets (sfx).  
>The 10/100's will be replaced for implementation.
>SS>
>SS>Any help would be appreciated.  My config follows:
>
>Hi,
>Why to use ng_fec and ng_one2many together?
>how about something simplier, like:
>
>                              +----------+ -->-sf0:lower--->wire
>wire>--em:lower->| one2many | -->-sf1:lower--->wire
>                             |                  | -->-sf2:lower--->wire
>                             +----------+ -->sf3:lower--->wire
>
>ngctl mkpeer em0: one2many lower one
>ngctl name em0:lower o2m
>ngctl connect sf0:  o2m lower many0
>ngctl connect sf1: o2m lower many1
>ngctl connect sf2: o2m lower many2
>ngctl connect sf3: o2m lower many3
>ngctl msg o2m setconfig "{ xmitAlg=2 failAlg=1 enabledLinks=[1 1 1 1 1] }"
>
>ngctl msg sf0: setpromisc 1
>ngctl msg sf0: setautosrc 0
>ngctl msg sf1: setpromisc 1
>ngctl msg sf1: setautosrc 0
>ngctl msg sf2: setpromisc 1
>ngctl msg sf2: setautosrc 0
>ngctl msg sf3: setpromisc 1
>ngctl msg sf3: setautosrc 0
>ngctl msg em0: setpromisc 1
>ngctl msg em0: setautosrc 0
>
>This keeps kernel-stack isolated from traffic, I think
>(and all interfaces involved layer2 unreachable from outsiders).
>
>Just tell us if its working for you.
>
>Chris.
>
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