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Client Communication

Client Communication. NIC is Really The physical hardware plus Software: device driver Upper-layer software talks to device driver Together , implement subnet layer protocols. NIC and Device driver Together handle PHY, MAC, LLC. Device Driver. NIC. Client Communication.

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Client Communication

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  1. Client Communication • NIC is Really • The physical hardware plus • Software: device driver • Upper-layer software talks to device driver • Together, implement subnet layer protocols NIC and Device driver Together handle PHY, MAC, LLC Device Driver NIC

  2. Client Communication • Client PC has Multiple Transport-Internet Layer Protocol Stacks for Different Protocols • NDIS in Windows Governs their Communication with the Single NIC TCP SPX IP IPX NDIS

  3. Client Communication • NDIS routes incoming packets to correct stack (IPX to SPX/IPX, etc.) TCP SPX IP IPX NDIS

  4. Client Communication • NDIS feeds outgoing packets one at a time to the NIC TCP SPX IP IPX NDIS

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