50 CHAPTER 4: P ROBLEM SOLVINGHow do you obtain a registered IP Address?The IP registration system ensures that every IP address used is unique; ifyou do not have a registered IP address, you may be using an identicaladdress to someone else and your network will not operate correctly.InterNIC 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.netIf your IP network is internal to your organization only, that is, you do notaccess the Internet, you may use any arbitrary IP address as long as it isnot being used by another device on your network. 3Com suggests youuse addresses in the range 192.168.0.0 to 192.168.255.255 with asubnet mask 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.Solving SoftwareUpgrade ProblemsYou can upgrade the management software of the Switch by using theSystem > Control > Software Upgrade operation in the Web Interface, orthe system control softwareUpgrade command in thecommand line interface.For details on these options, refer to the Management InterfaceReference Guide supplied in HTML format on the CD-ROM thataccompanies your Switch.If you have problems with your software upgrade, refer to the ProblemSolving section in the Management Interface Reference Guide.dua1740-0aaa03.book Page 50 Thursday, December 23, 2004 9:23 PM