TCP/IPv6 Configuration and Management Manual (G06.24+)

Maximize the Benefit of the NonStop TCP/IPv6
Architecture
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
3-17
Configuration Example for the Distributor Listening
Model
Configuration Example for the Distributor Listening Model
This example demonstrates the distributor listener model (see Distributor Listening
Model on page 3-6) using a hypothetical distributor called “Distrib” configured with
round-robin enabled. This configuration example assumes that you have already
configured the basic subsystem. (See Section 1, Quick Start and Section 5, Example
Illustrations and Adding Features to the Basic Configuration for procedures for
configuring the basic subsystem.) This example only shows you how to configure the
listening applications.
This configuration has five processors running three Distrib servers and controlling the
socket I/O for the server classes they control. All the connections share the same IP
address on the same G4SA. The G4SA round robin distributes incoming connections
to the different Distrib instances.
Figure 3-10 shows the round-robin feature in this configuration. We have configured a
Distrib in processors 3 through 5, bound them to the same port, and enabled
round-robin filtering on those processes. (See Round-Robin Filtering on page 2-7.)
Figure 3-10. Configuration Example for Distributor Listening Model: Distrib
VST0309.vsd
Pathsend
Sockets
TCP/IP LibraryTCP/IP Library
Distrib
Server 1
TCP/IP Library
Processor 4 P
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G4SA
Round-robin distribution of incoming
connection requests
Server
Class A
SQL/MP
Processor 2
Server
Class A
SQL/MP
Processor 1
Processor 0
Pathway
Server
Distrib
Server 2
Distrib
Server 3
Server
SQL/MP
Processor 2
Server
Class
A
SQL/MP
Processor 1
Pathway
Server
Processor 0
Server
Class
A
SQL/MP
Processor 2
Server
Class
A
SQL/MP
Processor 1
Processor 0
Pathway
Server