What is ODI(Open Data link Interface)?

Open Data-Link Interface (ODI) was introduced by Novell and Apple. It is used to define the communication mechanism between the network interface card (NIC) drivers and network protocols. It is a software interface that allows different Data-Link Layer protocols to share the same driver or adapter on a computer. It resides in Layer 2, the Data Link layer, of the OSI model. Open Data-link Interface (ODI) allows multiple NICs to be bound to multiple protocols. 
For ex. TCP/IP and IPX/SPX are the different protocol of data link layer by using ODI they can share the same device adapter.


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