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Purpose of this information

Network Job Entry Formats and Protocols explains the Network Job Entry (NJE) formats and protocols used by program products that support networking.

For product-related material, consult the product libraries.

Organization of this information

Network Job Entry Formats and Protocols is divided into the following topics:

Introduction to Network Job Entry (NJE) introduces the concepts needed to understand the material in the remaining chapters. This topic defines a network and describes the 5 layers of networking.

Formats of NJE Transfer Units describes the format of the control blocks used to transmit data across the network.

Job Header discusses the content and format of the job header field.

Data Set Header discusses the content and format of the data set header field.

Job Trailer discusses the content and format of the job trailer field.

NJE Nodal Message Records (NMR) discusses the content and format of the NJE nodal message records.

Networking Connection Control Records (NCCR) discusses the content and format of the networking connection control records.

Presentation Services discusses how the networking protocols span, compress, and compact data to be transmitted through transmission buffers.

Stream Control discusses the multileaving functions of SNA, BSC, and CTC.

NJE Connection Control discusses establishing or terminating a connection between two nodes.

Link Protocols discusses SNA, BSC, and CTC protocol sequences for initialization, normal processing, and termination between nodes. This topic also discusses error-recovery processing for each of the protocols.

System-Dependent Considerations describes system-dependent considerations and deviations from the protocols described in this information.

Abbreviations defines the abbreviations and terms used in this information.

Program products