Re: [Sheflug] Network design problem

[Gary Stimson <bulk@xxxxxxxxxxxxxx>]

Peter Humphrey wrote:
> I thought it was an example of sub-netting. Have I misunderstood that 
> concept? Where can I find an explanation?

The subnet is the IP addresses that one machine can reach without having 
to go through a gateway.

The netmask is binary AND'd with the destination IP. If true then the 
destination is on the local subnet so the source machine just transmits 
its packet for the destination to pick up; if false then the destination 
is outside of the local subnet so the source machine sends the packet to 
a gateway on its subnet to route onwards.

http://en.wikipedia.org/wiki/Subnetwork

Gary

_______________________________________________
        Sheffield Linux User's Group
  http://www.sheflug.org.uk/mailfaq.html
 GNU - The choice of a complete generation