Calculating the Subnets and the Number of Hosts Per Subnet 155
Now take a look at Table 5-3.
Table 5-4 lists the available network addresses for each subnet mask .192. The first and last
addresses are unavailable. The first address is considered a local network, and the last address
is used for broadcasting.
NOTE
These masks assume Class C networks.
Table 5-3
Subnet Mask
Subnet Mask
Number of Subnets
Number of Hosts Per Subnet
255.255.192.0
2
16,382
255.255.224.0
6
8190
255.255.240.0
14
4094
255.255.248.0
30
2046
255.255.252.0
62
1022
255.255.254.0
126
510
255.255.255.0
254
254
255.255.255.128
510
126
255.255.255.192
1022
62
255.255.255.224
2046
30
255.255.255.240
4094
14
255.255.255.248
8190
6
255.255.255.252
16,382
2
Table 5-4
Mask 192
Network
Available Addresses
Local Address
Broadcast Address
063
162
0
63
64127
65126
64
127
128191
129190
128
191
192255
193254
192
255
87200333.book Page 155 Wednesday, August 22, 2001 2:37 PM