How would the IP Unicast know where to go? It has to resolve to a machine
address. If you wanted to get to a machine without ARP you would be
constantly broadcasting IP. And then the machine would respond, but you
still wouldn't be able to get to it because IP's logically identify a host.
A mac address identifies it physically and is actually "burned" into the NIC
card.
----- Original Message -----
From: Cisco man <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 03, 2000 1:22 AM
Subject: ARP Broadcast
> Hi All,
>
> Could any one explain why ARP needs to broadcast when looking for the MAC
> address. Why not send a unicast using the given IP address.
>
> Regards to all
>
> Vapian
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