Reference Manual for the 54 Mbps Wireless Router WGR614 v6

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 7-1. Netmask Notation Translation Table for One Octet

Number of Bits Dotted-Decimal Value

1

1 2 8

2

1 9 2

3

2 2 4

4

2 4 0

5

2 4 8

6

2 5 2

7

2 5 4

8

2 5 5

 

 

The following table displays several common netmask values in both the dotted-decimal and the masklength formats.

Table 7-2. Netmask Formats

Dotted-Decimal

Masklength

 

 

 

 

2 5 5

. 0. 0.

0

/8

2 5 5 . 2 5 5 . 0. 0

/1 6

2 5 5 . 2 5 5 . 2 5 5 . 0

/2 4

2 5 5 . 2 5 5 . 2 5 5 . 1 2 8

/2 5

2 5 5 . 2 5 5 . 2 5 5 . 1 9 2

/2 6

2 5 5 . 2 5 5 . 2 5 5 . 2 2 4

/2 7

2 5 5 . 2 5 5 . 2 5 5 . 2 4 0

/2 8

2 5 5 . 2 5 5 . 2 5 5 . 2 4 8

/2 9

2 5 5 . 2 5 5 . 2 5 5 . 2 5 2

/3 0

2 5 5 . 2 5 5 . 2 5 5 . 2 5 4

/3 1

2 5 5 . 2 5 5 . 2 5 5 . 2 5 5

/3 2

 

 

 

 

Configure all hosts on a LAN segment to use the same netmask for the following reasons:

B -6

N etwork, R ou tin g, F irewa ll, a n d B a sics

202-10099-01, April 2005

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NETGEAR WGR614 v6 manual Netmask Notation Translation Table for One Octet