I love CRC errors, mostly just kidding. But before Meraki I worked for a test equipment company. CRC errors as has been stated are almost always a cable issue. If you are using fiber instead of copper, then the probability of a bad cable increases greatly. To test if the issue is a cable or a port if possible, move the connection to a different switch port and see if the problem follows the port. If the issue follows the port then it's a cable issue. If the problem remains on the single port then you have a bad port. Let me know if you have any questions.
... View more