Network Configuration Concepts 45NetworkConfigurationConceptsThe following sections explain certain key concepts of configuring yournetwork, which you must understand in order to set up the Webcachesuccessfully.IP Addresses If you are uncertain about what IP addresses to assign your equipment,contact your network administrator.To operate correctly, each device on your network (for example awebcache or management station) must have a unique IP address. IPaddresses have the format nnn.nnn.nnn.nnn where n is a decimalnumber between 0 and 255. An example IP address is ‘192.168.100.8’.The IP address can be split into two parts: The first part (‘192.168’ in the example) identifies the network onwhich the device resides. The second part (‘100.8’ in the example) identifies the device withinthe network.If your network is internal to your organization only, you may use anyarbitrary IP address. We suggest you use addresses in the series192.168.100.X (where X is a number between 1 and 254) with a subnetmask of 255.255.255.0.These suggested IP addresses are part of a group of IP addresses thathave been set aside specially for use “in house” only.CAUTION: If your network has a connection to the external IP network,you must apply for a registered IP address. This registration systemensures that every IP address used is unique; if you do not have aregistered IP address, you may be using an identical address to someoneelse and your network will not operate correctly.Obtaining a Registered IP AddressInterNIC Registration Services is the organization responsible forsupplying registered IP addresses. The following contact information iscorrect at time of publication:World Wide Web site: http://www.internic.net
