IBM AS/400, Hardware User Manual

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Chapter 9. Networking concepts
If you would like more information on networking topics, review the following:
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Advanced Peer-to-Peer Networking support
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Advanced Program-to-Program Communications
v
Dependent LU Requester Support (DLUR)
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High-performance routing (HPR)
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Internet packet exchange support
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Systems Network Architecture
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TCP/IP
Advanced Peer-to-Peer Networking
Advanced Peer-to-Peer Networking (APPN) is one type of data communications support that is provided
by the AS/400 system. This support routes data in a network between two or more advanced
program-to-program systems. The systems do not need to be directly connected in the same network or
adjacent networks.
The APPC/APPN support handles all of the SNA protocol requirements when your system is
communicating with a remote system that uses the LU session type 6.2 and node type 2.1 architectures.
The remote system can be any of the following systems:
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AS/400 system
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System/36
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System/38
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IBM personal computer
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Displaywriter
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Series/1
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5520 Administrative System
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RISC System/600 (Reduced Instruction Set Computer)
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DPPX/370 (Distribute Processing Programming Executive
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One of the following host systems:
– System/370
– System/390
– 30XX processor
– 43XX processor
– 9370 system
– Another system that supports the appropriate level of architecture
The AS/400 APPN support is an enhancement to the SNA Node Type 2.1 architecture that supplies
networking functions. These enhancements are easy-to-use, are dynamic; and give control of the network
to the peer systems that make up the network. APPN provides you with the following advanced functions:
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Distributed directory services
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Dynamic route selection that is based on user-specified values
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Intermediate session routing
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Routing of data by using transmission priorities.
With the exception of intermediate session routing, HPR builds on and uses these APPN functions. For
more information on HPR, see high-performance routing.
© Copyright IBM Corp. 1998, 2001
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