ZyAIR B-2000 Wireless LAN Gateway with 4-Port Switch

Chart 10 Subnet 4

 

NETWORK NUMBER

 

 

LAST OCTET BIT VALUE

 

 

 

 

 

 

IP Address

192.168.1.

 

192

 

 

 

 

 

 

IP Address (Binary)

11000000.10101000.00000001.

 

 

000000

11

 

 

 

 

 

 

Subnet Mask (Binary)

11111111.11111111.11111111.

 

 

000000

11

 

 

 

 

 

 

Subnet Address: 192.168.1.192

 

Lowest Host ID: 192.168.1.193

 

 

 

Broadcast Address: 192.168.1.255

 

Highest Host ID: 192.168.1.254

 

 

 

 

 

 

More Subnets

Similarly use a 27-bit mask to create 8 subnets (001, 010, 011, 100, 101, 110) and so on. The following table is a summary for class “C” subnet planning.

Chart 11 Class C Subnet Planning

NO. “BORROWED” HOST

SUBNET MASK

NO. SUBNETS

NO. HOSTS PER

BITS

 

 

SUBNET

 

 

 

 

1

255.255.255.128 (/25)

2

126

 

 

 

 

2

255.255.255.192 (/26)

4

62

 

 

 

 

3

255.255.255.224 (/27)

8

30

 

 

 

 

4

255.255.255.240 (/28)

16

14

 

 

 

 

5

255.255.255.248 (/29)

32

6

 

 

 

 

6

255.255.255.252 (/30)

64

2

 

 

 

 

7

255.255.255.254 (/31)

128

1

 

 

 

 

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 1) available for subnetting.

The following table is a summary for class “B” subnet planning.

Z

IP Subnetting