Specifications

WAN/LAN Management Nur für den internen Gebrauch
A31003-H3580-M103-2-76A9, 01-2009
C-16 HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
hg-c.fm
IP Addressing: Subnets
The Class C network "192.168.1.0" is to be divided into 4 subnets. A Class C network has the
default netmask "255.255.255.0". Two bits are required for four different combinations in the bi-
nary system. The following table illustrates the interdependency between the bit number and
the number of networks.
So that no gaps are left in the address range, additional 1s are added from left to right to the
existing 1s of the netmask.
Bits Combinations Bits Combinations
12
1
= 2 17 2
17
= 131072
22
2
= 4 18 2
18
= 262144
32
3
= 8 19 2
19
= 524288
42
4
= 16 20 2
20
= 1048576
52
5
= 32 21 2
21
= 2097152
62
6
= 64 22 2
22
= 4194304
72
7
= 128 23 2
23
= 8388608
82
8
= 256 24 2
24
= 16777216
92
9
= 512 25 2
25
= 33554432
10 2
10
= 1024 26 2
26
= 67108864
11 2
11
= 2048 27 2
27
= 134217728
12 2
12
= 4096 28 2
28
= 268435456
13 2
13
= 8192 29 2
29
= 536870912
14 2
14
= 16384 30 2
28
= 1073741824
15 2
15
= 32768 31 2
31
= 2147483648
16 2
16
= 65536 32 2
32
= 4294967296
Table D-3 Bit Number Depending on Number of Networks
Class C Network Host
Bytes 1st byte 2nd byte 3rd byte 4th byte
Netmask 255 255 255 0
Binary format 1111 1111 1111 1111 1111 1111 0000 0000
New Network Host
Bytes 1st byte 2nd byte 3rd byte 4th byte
Binary format 1111 1111 1111 1111 1111 1111 11 00 0000
Netmask 255 255 255 192
Table D-4 Example of a Subnet Mask Binary Format