Dell Brocade 6520 Command Reference Supporting Fabric OS v7.1.0 - Page 639

perfShowAlpaCrc 2 perfShowAlpaCrc Displays the CRC error count by port or by arbitrated loop physical address (AL_PA). SYNOPSIS perfshowalpacrc [slot/]port [ALPA] DESCRIPTION NOTES OPERANDS EXAMPLES SEE ALSO Use this command to display the cyclic redundancy check (CRC) error count of one or all devices attached to a port. If the AL_PA operand is specified, only the CRC count for that AL_PA device is displayed. If the AL_PA operand is not specified, the CRC count for all the AL_PA devices on a specified port are displayed. CRC count is a 64-bit counter. The CRC count value is displayed in hexadecimal. This command requires an Advanced Performance Monitoring license. This command is not supported on virtual FC ports (VE/VEX_Port), EX_Port, M (Mirror) ports and GbE ports. The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for details. This command is not supported on all platforms. Refer to the Fabric OS Administrator's Guide for specific hardware support. This command has the following operands: slot For bladed systems only, specifies the slot number of the port to be displayed, followed by a slash (/). port Specifies the number of the port to be displayed, relative to its slot for bladed systems. Use switchShow for a list of valid ports. ALPA Specify the AL_PA address to get the CRC errors for a specific device. This operand is optional; if the operand is omitted, this command displays CRC error counts for all devices attached to the specified port. To display the CRC error count for all AL_PA devices on a port: switch:admin> perfshowalpacrc 2/4 ALPA CRC_ERROR_COUNT 0x01 0 0x03 0 perfClearAlpaCrc Fabric OS Command Reference 611 53-1002746-01