NETGEAR DG834 ADSL Firewall Router DG834 DG834 Reference Manual page 158

Reference Manual for the ADSL Firewall Router DG834
Table 8-1. 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 8-2. 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
NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same
netmask for the following reasons:
• So that hosts recognize local IP broadcast packets
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
202-10005-05, June 2005
Network and Routing Basics