Traffic loss is observed that cannot be explained by other causes and the bcmDPC process can be seen running high in the output of the "top" command.
Summit series all
BlackDiamond series all
EXOS versions prior to 22.214.171.124p1-33
This issue is caused by L3 parity errors as described in PD4-4490184741. The bcmDPC is responsible for reporting messages to the shell. Whenever there is a parity error in the L2/L3 table received this process reports this information. These errors are continuously coming in therefore overloading the process and possibly causing the errors listed above.
This issue can be resolved by upgrading to one of the fixed versions: