30 C HAPTER 3: SETTING U P FOR M ANAGEMENTManaging a SwitchOver the NetworkTo manage a Switch over the network, the Switch must be correctlyconfigured with the following IP information: An IP address — for more information, see “IP Addresses” below. A subnet mask — for more information, see “Subnets and Using aSubnet Mask” on page 31. A default IP router — if you do not know what your default IP routeraddress is, contact your network administrator.IP Addresses If you are uncertain about what IP addresses to assign to your equipment,contact your network administrator.To operate correctly, each device on your network (for example a hub ormanagement station) must have a unique IP address. IP addresses havethe format n.n.n.n where n is a decimal number between 0 and 255. Anexample 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 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.17100ua.bk Page 30 Monday, March 12, 2001 11:18 AM