Black Box LR1530A-EU-R3, LR1530A-R3 manual Applications

Applications

less than or equal to 255, that is the maximum value of each 8-bit field.

The IP address is first specified and then you will be prompted to enter the mask size.

The mask size defines the subnet mask by using the specified number to reserve a series of contiguous bit locations from the start of the entire IP address. These reserved bit locations are then used as part of the network portion of the IP address.

For example, with a class C IP address, a subnet size of 26 will provide 2 host bits for the subnet address resulting in 4 possible subnets. The addresses for two of these are all ones or all zeros and are not valid under standard subnets, leaving two subnets available.

Configuration: The subnet mask size entered defines the size of the subnet mask from the start of the entire IP address.

The configuration of the sub-netted class C IP network is now completed. Remember that each of the 2 sub-networks created may only have 62 host IP addresses defined.

The configuration options described here are only for initial set up and configuration purposes. For more information on all of the configuration parameters available, please refer to the router PPP Menus Reference Manual file on the accompanying CD-ROM.

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