3com 3848 User Manual

Page of 72
50
C
HAPTER
 4: P
ROBLEM
 S
OLVING
How do you obtain a registered IP Address?
The IP registration system ensures that every IP address used is unique; if 
you do not have a registered IP address, you may be using an identical 
address to someone else and your network will not operate correctly.
InterNIC Registration Services is the organization responsible for 
supplying registered IP addresses. The following contact information is 
correct at time of publication:
World Wide Web site: 
http://www.internic.net
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.
Solving Software 
Upgrade Problems
You can upgrade the management software of the Switch by using the 
System > Control > Software Upgrade operation in the Web Interface, or 
the 
system control softwareUpgrade command in the 
command line interface. 
For details on these options, refer to the Management Interface 
Reference Guide supplied in HTML format on the CD-ROM that 
accompanies your Switch.
If you have problems with your software upgrade, refer to the Problem 
Solving section in the Management Interface Reference Guide.
dua1740-0aaa03.book  Page 50  Thursday, December 23, 2004  9:23 PM