For external facing switch ports, this means that frames with CRCs are detected, and discarded, by the switch port’s receiver. Cisco switches have the operational characteristic in which the switch will discard a frame detected to have a CRC error at the point of error detection. ![]() ![]() The method to determine the source of frames with CRC errors on Cisco switches is simple and somewhat easier to identify when compared to the methods used with Brocade switches. Once the root source of CRCs has been determined, the means to correct this situation will be provided in another document titled “How to resolve CRC errors”. ![]() This document assumes the reader does not necessarily have access to various management applications, but does have command line interface access to the switch.
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