Ah, but you see, LAN's operate at layer two - the MAC layer. How do you send
something to a MAC address when you don't know that MAC address? The only
way to associate the two is to send a MAC broadcast to MAC FFFF.FFFF.FFFF
which is processed by all stations. The station with the desired IP reports
it's MAC address back to the requestor, who then places that MAC address as
the destination address in the Layer 2 frame. ( and it's own MAC address as
the source address )
Still waiting for someone to demonstrate the error of my thinking. But that
sure is my reading of how it works.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of m.
jean stockton
Sent: Monday, July 03, 2000 1:36 PM
To: Cisco man; [EMAIL PROTECTED]
Subject: RE: ARP Broadcast
Great Question!!! Seems that the only thing that is required is a
point-2-point communication as the IP address is known.
My 2 cents worth.
makeeda
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Cisco man
Sent: Monday, July 03, 2000 1:22 AM
To: [EMAIL PROTECTED]
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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