This series of SAE Recommended Practices was developed to provide an
open interconnect system for on-board electronic systems. It is the
intention of these documents to allow electronic devices to communicate
with each other by providing a standard architecture. This particular
document describes the Network Layer which defines the requirements and
services needed for the electronic devices (Network Interconnection
ECUs) providing intercommunications between different segments of the
SAE J1939 Vehicle Network. It also defines the various types of Network
Interconnection ECUs and the functions they provide. The information in
this document applies only to ECUs that are intended to provide
networking services. It is not necessary for an ECU to provide any of
these services in order to be compliant with the SAE J1939 protocol.
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Also known as: SAE J 1939/31
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