Hughes manual Private IP addressing and DW4020 customers

Private IP addressing and DW4020 customers

10.0.0.0- 10.255.255.255 (10/8 prefix)

172.16.0.0- 172.31.255.255 (172.16/12 prefix) 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

The first block is the "24-bit block," the second is the "20-bit block," and to the third is "16-bit" block. Note that the first block is nothing but a single class A network number, while the second block is a set of 16 contiguous class B network numbers, and third block is a set of 256 contiguous class C network numbers.

An enterprise that decides to use IP addresses out of these address spaces can do so without any coordination with IANA or an Internet registry. The address space can thus be used by many enterprises. Addresses within this private address space will only be unique within the enterprise, or the set of enterprises which choose to cooperate over this space so they may communicate with each other in their own private internet. An enterprise that requests IP addresses for its external connectivity will never be assigned addresses from the blocks defined above.

DW4020 customers who use private addressing must install a router or switch between the DW4020 and their network. They will also need to provide the installer with the LAN Gateway address and, if applicable, the LAN subnet mask (see Configuring the Gateway host in Chapter 3).

Appendix B • The Internet and the DW4020 1031484-0001 Revision 2

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