Chart H-11 Eight Subnets; Chart H-12 Class C Subnet Planning - ZyXEL Communications VANTAGE RADIUS 50 User Manual

SUBNET SUBNET ADDRESS
1
2
3
4
5
6
7
8
The following table is a summary for class "C" subnet planning.
NO. "BORROWED" HOST BITS
1
2
3
4
5
6
7
Subnetting With Class A and Class B Networks.
For class "A" and class "B" addresses the subnet mask also determines which bits are part of the
network number and which are part of the host ID.
A class "B" address has two host ID octets available for subnetting and a class "A" address has
three host ID octets (see Chart J-1) available for subnetting.
IP Subnetting

Chart H-11 Eight Subnets

FIRST ADDRESS
0
32
64
96
128
160
192
224

Chart H-12 Class C Subnet Planning

SUBNET MASK
255.255.255.128 (/25)
255.255.255.192 (/26)
255.255.255.224 (/27)
255.255.255.240 (/28)
255.255.255.248 (/29)
255.255.255.252 (/30)
255.255.255.254 (/31)
LAST ADDRESS
1
33
65
97
129
161
193
223
NO. SUBNETS
Vantage RADIUS User's Guide
BROADCAST ADDRESS
30
62
94
126
158
190
222
254
NO. HOSTS PER
2
4
8
16
32
64
128
31
63
95
127
159
191
223
255
SUBNET
126
62
30
14
6
2
1
H-7