Internet Router User Guide
5. It is essential for your PC to have an IP Address.
If you click the "Obtain and IP address automatically" button, as shown above,
you need a DHCP (Dynamic Host Configuration Protocol) Server.
The Internet Router can act as a DHCP Server. The DHCP server will provide
all necessary IP information (IP Address, Subnet Mask, Gateway and DNS) to
your PC when it boots.
If you don't wish to use a DHCP Server, you must give each PC a unique IP
Address, and the same Subnet Mask.
Peer-to-Peer Networking
To enable PCs to communicate with each other:
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On the Identification tab of "Network Properties" (see Figure 32), each PC
needs a unique Computer Name, but the same Workgroup. Only PCs in the
same Workgroup will be visible to your PC.
(You can ignore the Access Control tab. In Peer-to-peer Networks, you must
use "Share Level Access Control".)
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Figure 33: TCP/IP Properties