Tom Patton wrote: > I'm confused, then...fortunately I'm not also a network guru, so I have > an excuse of sorts...;-) > > 254 would set the LSB of the byte to 0, wouldn't that allow checking > of .0.x and .1.x ranges of address...? Wouldn't the mask for .2.x > and .3.x be 255.255.253.0? > > Tom in NM > > > No, it wouldn't set that bit to 0. It moves that bit to the host side of the address. It becomes clearer if you use the other notation, which says how many bits are part of the network address. So, 255.255.254 = /23 or 23 network bits and 9 host bits. Looking at the host side, the address range runs from 0.0 to 1.255, with 0.0 being the network address and 1.255, the broadcast. Add the host address to the network address of 192.168.2+x.x to get the complete address range of 192.168.2.0 to 192.168.3.255
I often have to worry about subnet masks in my work. -- Use OpenOffice.org <http://www.openoffice.org> -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
