62
C
HAPTER
4: P
ROBLEM
S
OLVING
■
The Switch’s IP address has been entered correctly in your network
management application (such as 3Com Network Director).
The following is a brief overview of IP addressing, and how to obtain a
registered IP address.
IP Addressing
To be managed correctly, each device on your network (for example a
Switch or Hub) must have a unique IP address. IP addresses have the
format
n.n.n.n
where
n
is a decimal number between 0 and 255. An
example IP address is 192.168.100.8.
The IP address is split into two parts:
■
The first part (‘192.168.100’ in the example) identifies the network on
which the device resides
■
The second part (‘.8’ in the example) identifies the device within the
network
The natural subnet mask for this example is 255.255.255.0.
If your network has a connection to the external IP network, that is, you
access the Internet, you must apply for a registered IP address.
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.
DUA1720-3AAA09.book Page 62 Wednesday, July 6, 2005 4:33 PM
Summary of Contents for SuperStack 3 3C17204
Page 6: ...INDEX REGULATORY NOTICES DUA1720 3AAA09 book Page 6 Wednesday July 6 2005 4 33 PM...
Page 12: ...12 ABOUT THIS GUIDE DUA1720 3AAA09 book Page 12 Wednesday July 6 2005 4 33 PM...
Page 64: ...64 CHAPTER 4 PROBLEM SOLVING DUA1720 3AAA09 book Page 64 Wednesday July 6 2005 4 33 PM...
Page 84: ...84 APPENDIX B PIN OUTS DUA1720 3AAA09 book Page 84 Wednesday July 6 2005 4 33 PM...
Page 100: ...DUA1720 3AAA09 book Page 100 Wednesday July 6 2005 4 33 PM...
