ZyXEL Communications VMG1312-B Series User Manual page 325

Table 119 Eight Subnet s ( cont inued)
SUBNET
3
4
5
6
7
8
Subnet Planning
The following t able is a sum m ary for subnet planning on a net work wit h a 24- bit net work num ber.
Table 120 24- bit Net work Num ber Subnet Planning
NO. "BORROWED"
HOST BITS
1
2
3
4
5
6
7
The following t able is a sum m ary for subnet planning on a net work wit h a 16- bit net work num ber.
Table 121 16- bit Net work Num ber Subnet Planning
NO. "BORROWED"
HOST BITS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VMG1312-B Series User's Guide
SUBNET
FIRST ADDRESS
ADDRESS
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)
SUBNET MASK
255.255.128.0 ( / 17)
255.255.192.0 ( / 18)
255.255.224.0 ( / 19)
255.255.240.0 ( / 20)
255.255.248.0 ( / 21)
255.255.252.0 ( / 22)
255.255.254.0 ( / 23)
255.255.255.0 ( / 24)
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)
Appendix B IP Addresses and Subnetting
LAST BROADCAST
ADDRESS ADDRESS
94 95
126 127
158 159
190 191
222 223
254 255
NO. HOSTS PER
NO. SUBNETS
SUBNET
2 126
4 62
8 30
16 14
32 6
64 2
128 1
NO. HOSTS PER
NO. SUBNETS
SUBNET
2 32766
4 16382
8 8190
16 4094
32 2046
64 1022
128 510
256 254
512 126
1024 62
2048 30
4096 14
8192 6
16384 2
32768 1
325