For example, the two 16 bit checksums catch all single and double errors, all errors with an odd number of bits, all burst errors or length 16 or less, 99.997% of 17-bit error bursts, and 99.998% of 18-bit and longer bursts
For example, the two 16 bit checksums catch all single and double errors, all errors with an odd number of bits, all burst errors or length 16 or less, 99.997% of 17-bit error bursts, and 99.998% of 18-bit and longer bursts
We have now seen methods for achieving two of the three criteria required of the data link layer i.e. framing and error control
We will now look at 6 protocols, of increasing reliability for controlling the flow of packets on the channel