Chart H-13 Class B Subnet Planning - ZyXEL Communications VANTAGE RADIUS 50 User Manual

Vantage RADIUS User's Guide
The following table is a summary for class "B" subnet planning.
NO. "BORROWED" HOST BITS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
H-8

Chart H-13 Class B Subnet Planning

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)
NO. SUBNETS NO. HOSTS PER SUBNET
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
32766
16382
8190
4094
2046
1022
510
254
126
62
30
14
6
2
1
IP Subnetting