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58CHAPTER 4: PROBLEM SOLVING
If your IP network is internal to your organization only, that is, you do not access the Internet, you may use any arbitrary IP address as long as it is not being used by another device on your network. 3Com suggests you use addresses in the range 192.168.0.0 to 192.168.255.255 with a subnet mask of 255.255.255.0.
These suggested IP addresses are part of a group of IP addresses that have been set aside specially for use ‘in house’ only.