3Com 3c17300 Implementation Guide - Page 88

Advanced Overview, CAUTION

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90 APPENDIX C: IP ADDRESSING 192.168.100.X (where X is a number between 1 and 254) with a subnet mask 255.255.255.0. If you are using SLIP, use the default SLIP address of 192.168.101.1 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. CAUTION: If your network has a connection to the external IP network, you must apply for a registered IP address. This 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. Obtaining a Registered IP Address 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 Advanced Overview IP addresses are 32-bit addresses that consist of a network part (the address of the network where the host is located) and a host part (the address of the host on that network). Figure 27 IP Address: Network Part and Host Part IP Address network 32 bits host The boundary between network and host parts depends on the class of IP network. IP addresses differ from Ethernet MAC addresses, which are unique hardware-configured 48-bit addresses. A central agency, such as the InterNIC Registration Services mentioned above, assigns the network part of the IP address, and you assign the host part. All devices that are connected to the same network share the same network part (also called the prefix).

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90
A
PPENDIX
C: IP A
DDRESSING
192.168.100.
X
(where
X
is a number between 1 and 254) with a subnet
mask 255.255.255.0. If you are using SLIP, use the default SLIP address of
192.168.101.1 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.
CAUTION:
If your network has a connection to the external IP network,
you must apply for a registered IP address. This 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.
Obtaining a Registered IP Address
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:
Advanced Overview
IP addresses are 32-bit addresses that consist of a
network part
(the
address of the network where the host is located) and a
host part
(the
address of the host on that network).
Figure 27
IP Address: Network Part and Host Part
IP addresses differ from Ethernet MAC addresses, which are unique
hardware-configured 48-bit addresses. A central agency, such as the
InterNIC Registration Services mentioned above, assigns the network part
of the IP address, and you assign the host part. All devices that are
connected to the same network share the same network part (also called
the
prefix
).
IP Address
network
host
32 bits
The boundary between network
and host parts depends on the
class of IP network.