[X4U] MAC address vs ? Ethernet Address ?

[Richard Gilmore]

I had no idea such things were going on underneath that quiet screen of
mine. Thanx for the description. I'll have to research some of that on
Google when I get the chance.


On 4/8/05 1:02 PM, "Doug LaBore" <dlabore at mn.rr.com> wrote:

>> Could you explain this a little more? I'm not that well versed in computer
>> terminology. 
>> 
>> What's a contiguous layer 2 network?
> 
> Network computers have a standard way they all communicate over a Ethernet
> network its called the "Open System Interconnection" or OSI model and it
> consists of 7 layers each handling one aspect of the communications.
> 
> The 1st layer is the physical layer that's the actual cable & hardware used
> to interconnect two computers or networks.
> 
> The 2nd layer is the "Data Link" layer. This is where each network device
> watches all the bits on the wire and decides what to use and what to throw
> away if that packet isn't for your computer. This is the layer that utilizes
> the MAC address (media access control). All devices on your local LAN
> network actually communicate at this layer and only need to move to layer 3
> if they need to communicate with a device out on the internet or on another
> subnet elsewhere on your LAN.
> 
> Layer 3 is called the "Network" layer and utilizes IP numbers to route
> packets to the right computer or to a network that knows how to communicate
> with your computer.
> 
> There are four more layers 4-Transport, 5-Session, 6-Presentation,
> 7-Application. That make higher level decisions as to what to do with each
> packet that the lower layers pass through, but we can talk about those
> another time.
> 
> Hope my humble description helps...
> 
> Doug LaBore
> 
> 
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