On 10-11-20 08:25 PM, Karsten Becker wrote:
On 11/20/2010 09:04 PM, Frédéric Boiteux wrote:
I'm not sure to understand well : in the case I gave, 192.168.1.0/24 and
192.168.2.0/24, the two nets don't share the same broadcast domain
(192.168.1.255 and 192.168.2.255), isn't it ?
Fred.
I'm also in doubt.
Because your example is exactly why I see the need to have two subnets
on the same interface.
I have one subnet for VoIP phones and one for computers, just to have
the f*cking broadcasting from Windows not bailing onto my phones which
makes them slow and #+?1-up the speech quality. So I need to have both
subnets on the FW interface to reach both the internet.
Regards
Karsten
Regardless of number of subnets and their masks you configure on *one*
physical interface they all belong to one L2 broadcast domain. Thus any
broadcast packet generated by any host from any subnet will be received
by all hosts connected to this segment. Let's put it this way - your L3
broadcast segment differs from your L2 segment in this case which does
not prevent broadcast packets to hit all machines.
Evgeny.
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