Motorola 6806800C08B Manual Do Utilizador

The Interface Director (IfD) is located on the system manager node. Its main functions include:

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Defining an ifIndex for each configured interface (either obtained from ifIndex Allocator 
Platform Service or generated internally)

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Responding to requests from Interface Agents to provide an ifIndex

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Registering ownership of the interface managed objects

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Maintains a consolidated database with respect to the interfaces present on all the nodes.

The Interface Node Director (IfND) exists on each node. It is responsible for state management 
of the physical interfaces, including status monitoring. The interfaces of the IfND are private and 
internal to NCS. 

Interface Agents (IfA) are a linkable library that provides the IfSv functionality to its clients. Its 
functionality includes:

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Providing an interface to applications which they use to create and delete physical and 
logical interfaces

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Fetching an ifIndex for each created interface from the IfD 

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Registering ownership of the managed object rows for the interfaces created

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Providing an interface that allows applications to register with the IfSv

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Notifying applications of any operational state changes of an interface 

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Providing interface information to applications

For further details refer to the Interface Service Programmer's Reference.

The Message Distribution Service (MDS) provides a communication network to be used by 
threads and/or processes distributed over physical nodes in a system. MDS clients can 
dynamically find and talk to other MDS clients anywhere in the same MDS system.