arp issues...but WHY

[Bill Moran]

J.D. Bronson wrote:
> At 09:24 AM 05/04/2004, Kent Stewart wrote:
> 
>> > >Kent
>> >
>> > How are these not different networks? Could you explain?
>> > What would I need to do to MAKE then different?
>> >
>>
>> They are on the same cable or wire. So, you only have one network.  For
>> example, on this computer, I have a 192.168.x.x network and a
>> 207.41.x.x network. The 207. network is hooked up to my DSL modem
>> switch and the 192. network is connected to a different switch. All of
>> my local computers are hooked up to this network. They are physically
>> different networks.
>>
>> You have two logically different IP addresses but they are on the same
>> network.
>>
>> Kent
> 
> ahh..NOW I understand. thanks.
> 
> If I got a switch for the 192 block machines and a switch for the 10 block
> machines that would be 2 distinct networks...right?
> 
> Next question..
> 
> Then how do I get data from one segment to the other w/o using a router 
> and yet at the same time keeping 'arp' happy ?

You don't.  That's what a router does.  If you want to move data between
two different networks you either need a router, or you need to cheat (like
you currently are) and just ignore the arp messages.

You can just turn on forwarding on the BSD machine with the two NICs and it
will act as a router for you.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com