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Dynamic Host Configuration Protocol (DHCP)
The Dynamic Host Configuration Protocol (DHCP) provides a framework for passing
configuration information to hosts on a TCP/IP network.
DHCP can function either as a DHCP server or a BOOTP/DHCP Relay Agent.
If DHCP functions as a DHCP server, it processes DHCP packets on the local
system. If DHCP functions as a BOOTP/DHCP Relay Agent, it then relays DHCP
and BOOTP packets on the local system, but does not process them.
Point-to-Point Protocol (PPP)
PPP is a method of transmitting datagrams over serial point-to-point links for wide
area network (WAN) connectivity.
OS/400 Network File System Support
OS/400 Network File System (NFS) Support is a replacement for the TCP/IP File
Server Support/400 (FSS/400) licensed program offering. Users who are
accustomed to working with FSS/400 will notice many similarities between FSS/400
and NFS. It is important to note, however, that FSS/400 and NFS are not
compatible with each other. At any given time, only one of these applications may
be executing.
NFS support allows the AS/400 system to function as a file server on the Internet. It
does this by making remote objects stored in a file system appear to be local, as if
they reside in the local host.
With NFS, all systems in a network can share a single set of files. This eliminates
the need for duplicate file copies on every network system. Using NFS aids in the
overall administration and management of users, systems, and data. For more
information about the Network File System see the book,
OS/400 Network File
System Support
, SC41-5714-01.
Application Program Interfaces (APIs)
Many times an enterprise has unique interoperability requirements for its private
networks. This means that the enterprise must provide its own applications to fulfill
these unique requirements. On AS/400, this is accomplished with several
application programming interfaces (APIs).
For helpful reference information about all of the OS/400 APIs, see the
System API
Reference
, SC41-5801-03.
Sockets Interface
A sockets interface (sockets) allows you to write your own applications to
supplement those that are supplied by TCP/IP. Sockets allow unrelated processes
to exchange data locally and over networks. Both connection-oriented and
connectionless communications are provided for TCP/IP. With this support you can
write applications to the TCP, UDP, and IP protocols directly. The TCP/IP
applications that run on sockets are FTP, SMTP, SNMP, LPR, LPD, BOOTP, TFTP,
RouteD, and REXEC. The sockets interface operates over TCP/IP or AnyNet/400.
Chapter 1. TCP/IP on AS/400 15