System information

6
AS/400 IBM Network Station: Techniques for Deployment in a WAN
1.2.3 Separation of Servers
Several IBM Network Station Manager for AS/400 server functions that were
previously bundled can now be
split and installed on multiple servers. This
allows you to balance network traffic, if desired. Balancing network traffic
enables IBM Network Station end users to access their normal desktop when
they are away from their regular server.
To use separation of servers, you must install the zero-charge IBM Network
Station Manager Release 3 licensed program on each computer system
providing one of the server functions discussed in this topic (except for the
system acting only as a BOOTP/DHCP server). If used on the AS/400
system, the BOOTP or DHCP server function is actually provided by TCP/IP.
Also, DHCP server support on an AS/400 system requires Version 4 Release
2 or later. On any one specific computer system, IBM Network Station
Manager Release 3 can be used to perform
more than one server role. It is
also important to remember that, if desired, the server functions can be split
across different supported computer systems. For example, your V4R2
AS/400 with IBM Network Station Manager for AS/400 Release 3 can provide
the base code, terminal configuration, and authentication server functions
and have another server (such as, AS/400, NT or RISC System/6000) act as
the DHCP server. A brief description of each server role follows.
BOOTP/DHCP Server
The BOOTP or DHCP server provides the IBM Network Station with
information such as its IP address, the base code server address, and the
address of the terminal configuration server. Unlike BOOTP, the DHCP server
allows you to
dynamically assign IP addresses to clients upon request. Refer
to the manual,
IBM Network Station Manager Installation and Use,
SC41-0664, for examples on how to accomplish load balancing by specifying
a different address for the base code server and configuration server. This
manual and others are online at: www.ibm.com/nc/pubs. As mentioned
previously, the IBM Network Station Manager for AS/400 product does
not
need to be installed on the AS/400 DHCP server that is servicing DHCP and
BOOTP clients.
Base Code Server
The IBM Network Station Manager for AS/400 product on this server provides
the operating system and the application programs that are downloaded to
the IBM Network Stations during initialization. This server is not used to
configure IBM Network Stations.