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Aiming at overcoming the disadvantages in the Simple Data Link(SDL) protocol, we study and modify the protocol mechanism, which enhances the flexibility in carrying the packets of various network layer protocols and improves the ability to correct errors. We research the error check and error correction of CRC and the application of MPLS labels in the SDL protocol. Furthermore, we provide a method of CRC correction and application of MPLS labels in the SDL protocol. Finally, we present a scheme of realizing the SDL protocol.
Aiming at overcoming the disadvantages in the Simple Data Link (SDL) protocol, we study and modify the protocol mechanism, which enhances the flexibility in carrying the packets of various network layer protocols and improves the ability to correct errors. We research the error check and error correction of CRC and the application of MPLS labels in the SDL protocol. Further, we provide a method of CRC correction and application of MPLS labels in the SDL protocol. Finally, we present a scheme of realizing the SDL protocol.