Specification of Network Management Interface
AUTOSAR CP R22-11
5.1.1 ComM, CanNm, J1939Nm, FrNm, UdpNm, generic bus specific NM layers
and CDD
The Generic Network Management Interface module (Nm) provides services to the
Communication Manager (ComM) and uses services of the bus specific Network Man-
agement modules:
• CAN Network Management ([3, CanNm])
• FlexRay Network Management ([4, FrNm])
• Ethernet Network Management ([5, UdpNm]).
• J1939 Network Management ([6, J1939Nm]).
For Buses which do not need to provide Network Management Information on the
bus like for example a LIN-bus the Bus-Type can be configured as "local Nm". With
respect to callbacks, the Nm provides notification callbacks to the bus specific Network
Management modules and calls the notification callbacks provided by the ComM.
In addition to the official AUTOSAR NM-modules above, Nm also support generic bus
specific NM layers (<Bus>Nm). Any component which implements the required pro-
vided interfaces and uses the provided callback functions of Nm can be used as a bus
specific NM. See section 7.5 for the prerequisites for a generic bus specific NM.
Rationale: Nm is specified to support generic bus specific NM layers by adding generic
lower layer modules as Complex Drivers. As such, Nm does not explicitly use the ser-
vices by the official AUTOSAR bus-NM modules (CanNm, FrNm and UdpNm), but
rather the services of the generic <Bus>Nm. The AUTOSAR bus-NMs are then explic-
itly supported since they implement the interfaces of <Bus>Nm.
The optional CarWakeUp-Functionality needs a Complex Driver which Coordinates Ba-
sic Software Mode Management.
5.1.2 Error handling modules
Nm reports development errors to the Default Error Tracer according to
[SWS_Nm_00232].
5.1.3 BSW Scheduler
In case of the NM Coordinator functionality and depending on the configuration, the
Nm will need cyclic invocation of it’s main scheduling function in order to evaluate and
detect when timers have expired.
18 of 137 Document ID 228: AUTOSAR_SWS_NetworkManagementInterface
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