Sun Microsystems SunLink SNA 9.1 PU2.1, Руководство по настройке

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1-4 SunLink SNA 9.1 PU2.1 Server Configuration Guide—August 1997
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The client connection requests are directed to a system by the Sun Name
Server. For more information, refer to Section B.2, “Sun Name Server,” on
page B-3.
1.2.4 PU2.1 Server Process
The Sun PU2.1 server process (SunPU21) is the software component that
supports client connections and provides the actual data link connections to
SNA.
Each client connection requires a separate file descriptor. The number of client
connections that a PU2.1 server process can support depends on the file
descriptor limit of your operating system. For more information, refer to the
documentation for your system.
If you want a system to support more client connections than the process file
descriptor limit, you can install multiple PU2.1 server processes. You can also
install multiple PU2.1 server processes on symmetric multiprocessing (SMP)
platforms to take advantage of the multiple processors.
1.2.5 Sun Name Server
The Sun Name Server, which is part of the SunGMAN, is used with the DNS to
resolve resource requests from clients.
A client connects to the Sun PU2.1 SNA Server by specifying the name of the
resource it wants to access or by specifying its user name. If the client adds the
name of the Sun subdomain as an extension to the resource or user name, the
client instructs the local DNS to defer the resolution of the name to the Sun
Name Server. For more information about how the Sun Name Server resolves
resource requests from clients, refer to Section B.2, “Sun Name Server,” on
page B-3.
If the client requests an LU pool, the Sun Name Server performs load balancing
to direct the client to the system with the lightest load, with the highest
available bandwidth, and with available LUs. In addition, if the network is
configured appropriately, the Sun Name Server can direct the client to the
system in the most suitable geographical location. For more information, refer
to Appendix E, “Load Balancing.”