MultiPort/LT User Reference
Page 10
Chapter 1
Only the first three classes, classes A,B and C, are applicable to the
MultiPort/LT's networking environment:
Class A
An address with the most significant binary bit set to 0; that is, an
address beginning with 1 to 127 (decimal) inclusive.
❏
Example
92.120.247.32
With Class A addresses, the first 8 binary bits are
always
the external
network number. The complete network number is a minimum 8 bits
and maximum 31 bits, as decoded by the subnetmask.
Class B
An address with the first two most significant binary bits set to 10;
that is, an address beginning with 128 to 191 (decimal) inclusive.
❏
Example
132.160.22.16
With Class B addresses, the first 16 binary bits are
always
the
external network number. The complete network number is a
minimum 16 bits and maximum 31 bits, as decoded by the subnetmask.
Class C
An address with the first three most significant binary bits set to 110;
that is, an address beginning with 192 to 223 (decimal) inclusive.
❏
Example
220.72.117.26
With Class C addresses, the first 24 binary bits are
always
the
external network number. The complete network number is a
minimum 24 bits and maximum 31 bits, as decoded by the subnetmask.
