Table 115 Eight Subnets; Table 116 Class C Subnet Planning - ZyXEL Communications ES-2724 User Manual

The following table shows class C IP address last octet values for each subnet.

Table 115 Eight Subnets

SUBNET
1
2
3
4
5
6
7
8
The following table is a summary for class "C" subnet planning.

Table 116 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
Appendix B IP Addresses and Subnetting
SUBNET ADDRESS FIRST ADDRESS
0 1
32 33
64 65
96 97
128 129
160 161
192 193
224 225
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)
Table 104 on page
LAST ADDRESS
30
62
94
126
158
190
222
254
NO. SUBNETS
2
4
8
16
32
64
128
326) available for subnetting.
ES-2724 User's Guide
BROADCAST
ADDRESS
31
63
95
127
159
191
223
255
NO. HOSTS PER
SUBNET
126
62
30
14
6
2
1
331