HP-UX LAN Administrator's Guide (July 2003)

DRAFT COPY Network Addressing
Network Addresses and Node Names
Chapter 6 95
Network Addresses and Node Names
Several types of names and addresses are used in networking software. This can be confusing
to first-time users. Table 6-2 illustrates which address type is used by each layer of the OSI
model. A description of each address type and how it is used by LAN and the services which
run on it follows inTable 6-3. Refer to “Network and System Names” on page 28 for additional
information on how these names are assigned.
Table 6-2 Network Addresses and the OSI Model
OSI Layer
Name
OSI Layer
Function
Address Type
Used
7 Application network programs hostname
6 Presentation data
interpretation
hostname
5 Session connection control socket address
4 Transport end-to-end
transfer
port address
3 Network routing and
switching
Internet (IP)
address
2 Data Link data packaging
and error
detection
link level address
1 Physical physical
connection
link level address