ZyXEL P-335 Plus User Guide - Page 208
P-335 Plus User's Guide, Appendix D IP Addresses and Subnetting, Class B Subnet Planning
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P-335 Plus User's Guide The following table is a summary for class "B" subnet planning. Table 88 Class B Subnet Planning NO. "BORROWED" HOST BITS SUBNET MASK 1 255.255.128.0 (/17) 2 255.255.192.0 (/18) 3 255.255.224.0 (/19) 4 255.255.240.0 (/20) 5 255.255.248.0 (/21) 6 255.255.252.0 (/22) 7 255.255.254.0 (/23) 8 255.255.255.0 (/24) 9 255.255.255.128 (/25) 10 255.255.255.192 (/26) 11 255.255.255.224 (/27) 12 255.255.255.240 (/28) 13 255.255.255.248 (/29) 14 255.255.255.252 (/30) 15 255.255.255.254 (/31) NO. SUBNETS 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768 NO. HOSTS PER SUBNET 32766 16382 8190 4094 2046 1022 510 254 126 62 30 14 6 2 1 208 Appendix D IP Addresses and Subnetting
P-335 Plus User’s Guide
208
Appendix D IP Addresses and Subnetting
The following table is a summary for class “B” subnet planning.
Table 88
Class B Subnet Planning
SUBNET MASK
NO. SUBNETS
NO. HOSTS PER
SUBNET
1
255.255.128.0 (/17)
2
32766
2
255.255.192.0 (/18)
4
16382
3
255.255.224.0 (/19)
8
8190
4
255.255.240.0 (/20)
16
4094
5
255.255.248.0 (/21)
32
2046
6
255.255.252.0 (/22)
64
1022
7
255.255.254.0 (/23)
128
510
8
255.255.255.0 (/24)
256
254
9
255.255.255.128 (/25)
512
126
10
255.255.255.192 (/26)
1024
62
11
255.255.255.224 (/27)
2048
30
12
255.255.255.240 (/28)
4096
14
13
255.255.255.248 (/29)
8192
6
14
255.255.255.252 (/30)
16384
2
15
255.255.255.254 (/31)
32768
1