Installing and Administering LAN/9000 Software

128 Chapter6
Network Addressing
Network Addresses and Node Names
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 54
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