Your statement that "the two broadcast so openly" might indicate a
misunderstanding of broadcasting in general. A network broadcast goes out
to 255.255.255.255 which means that all devices on the same physical subnet
will get it. A physical subnet is one not separated by a router. A subnet
broadcast is sent based on the network address and subnet mask. For your
example 164.134.0.0/255.255.0.0 a broadcast would go out to 164.134.255.255,
which means that all network adapters configured with addresses in the
164.134.0.0/255.255.0.0 range will hear the broadcast.
DHCP broadcasts are network broadcasts, ie are addressed to 255.255.255.255
so all DHCP servers on the same physical subnet will hear and respond to
them.
Unless you configured a router to somehow forward broadcasts, which would be
a bad thing, all broadcasts on different physical subnets are kept separate.
"Go:gul" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hello,
>
> I have two DHCP servers which operate on different subnets
> (164.134.0.0/255.255.0.0) and (10.10.10.0/255.0.0.0). At the moment
> the two broadcast so openly that I can not "force" the two scopes to
> stay seperate and want to imopose DHCP packet filtering to stop the
> cross contamination.
>
> Problem is that I can;t seem to get this to work. I need to see a
> tutorial which shows examples of DHCP packet filtering so i can figure
> out how this might work in my environment.
>
> Does anyone know where I could find such a tutorial please?
>
> Thanks
>
> Go:gul
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