Table I. | Default Netmask | |
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IP Address Class |
| Default Netmask |
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|
A |
| 255.0.0.0 |
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|
|
B |
| 255.255.0.0 |
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|
|
C |
| 255.255.255.0 |
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|
|
|
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Sample Configurations
Single PC
The modem comes preconfigured with IP address 10.0.0.138. To establish a local connection between the PC and the modem, configure the IP address of the PC within the same IP network of the modem, and if subnetting is applied, within the same IP subnet of the modem. The address must be unique within the network.
It is recommended that the PC is allocated an IP address that falls within one of the private ranges of the modem or to use an address in the default range of the modem, for example, 10.0.0.140 (refer to figure 32).
IP address : 10.0.0.138 | IP address : 10.0.0.140 |
(Sub)netmask : 255.255.0.0 | (Sub)netmask : 255.255.0.0 |
Default Gateway : none | Default Gateway : none |
IP Network 10
Modem | PC |
Figure 32. Example of Single PC Configuration
The modem IP address falls within one of the ranges set aside by IANA for private IP networks. These ranges are defined in RFC 1918, Address Allocation for Private Internets. Table J lists the currently defined ranges.