On Mon, 3 Mar 2003 15:55:37 -0800 Todd Lyons <[EMAIL PROTECTED]> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Scott St. John wrote on Sun, Mar 02, 2003 at 09:19:04AM -0500 : > > > > So I would use /16 for a Class C network? > > Not quite: > /8 is Class A > /16 is Class B > /24 is Class C Not quite:) 0....... ........ ........ ........ is Class A 10...... ........ ........ ........ is Class B 110..... ........ ........ ........ is Class C 1110.... ........ ........ ........ is Class D (multicast) 1111.... ........ ........ ........ is Class E (reserved) The leading bits were then used to indicate the Class' mask: 0 --> /8 10 --> /16 110 --> /24 If the leading bits were not taken into consideration, 224.0.0.x might be misconstrued for a Class C instead of the Class D multicast that it really is... But, nowadays, Classes are mainly historical...
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