Performance of crc For r check bits per frame and a frame length less than 2[-1,the following can be detected 1) All patterns of 1, 2, or 3 errors(d> 3) all bursts of errors of r or fewer bits Random large numbers of errors with prob 1-2- Standard DLC's use a CrC with [=16 with option of [=32 CRC16.G=X16+X15+X2+1=11000000000101Performance of CRC • For r check bits per frame and a frame length less than 2r-1, the following can be detected 1) All patterns of 1,2, or 3 errors (d > 3) 2) All bursts of errors of r or fewer bits 3) Random large numbers of errors with prob. 1-2-r • Standard DLC's use a CRC with r=16 with option of r=32 – CRC-16, G = X16 + X15 + X 2 +1 = 11000000000000101