DSL-504T DSL Router User’s Guide
61
It is recommended that you choose private network IP Addresses from the above list. For more
information on address assignment, refer to RFC 1597, Address Allocation for Private Internets and
RFC 1466, Guidelines for Management of IP Address Space.
Subnet Mask
In the absence of subnetworks, standard TCP/IP addressing may be used by specifying subnet
masks as shown below.
IP Class Subnet Mask
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0
Subnet mask settings other than those listed above add significance to the interpretation of bits in
the IP address. The bits of the subnet mask correspond directly to the bits of the IP address. Any
bit an a subnet mask that is to correspond to a net ID bit in the IP address must be set to 1.