NETGEAR FWG114Pv2 - Wireless Firewall With USB Print Server Reference Manual page 200

Reference Manual for the ProSafe Wireless 802.11g Firewall/Print Server Model FWG114P v2
The following table lists the additional subnet mask bits in dotted-decimal notation. To use the
table, write down the original class netmask and replace the 0 value octets with the dotted-decimal
value of the additional subnet bits. For example, to partition your Class C network with subnet
mask 255.255.255.0 into 16 subnets (4 bits), the new subnet mask becomes 255.255.255.240.
Table 11-1. Netmask Notation Translation Table for One Octet
Number of Bits
1
2
3
4
5
6
7
8
The following table displays several common netmask values in both the dotted-decimal and the
masklength formats.
Table 11-2. Netmask Formats
Dotted-Decimal
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.128
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
255.255.255.254
255.255.255.255
B-6
Dotted-Decimal Value
128
192
224
240
248
252
254
255
Masklength
/8
/16
/24
/25
/26
/27
/28
/29
/30
/31
/32
201-10301-02, May 2005
Networks, Routing, and Firewall Basics