Displaying and clearing the crc error count, Monitoring end-to-end performance – HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class User Manual

Page 145

Displaying and clearing the CRC error count

You can use the

perfshowalpacrc

command to display the CRC error count for all AL_PA devices or a

single AL_PA on a specific active L_Port.

NOTE:

The SAN Switch 4/32 running Fabric OS v4.4.0 provides port CRC reports through Advanced

Web Tools.

To display the CRC error count for all AL_PA devices on a port:

To display the CRC error count for a single AL_PA device on a port:

To clear the CRC error count:

In v3.1.0, v4.1.0, and later, the

portstatsclear

command clears AL_PA- based CRC error counters

for all the ports in the same group.

Monitoring end-to-end performance

End-to-end performance monitoring counts the number of words and CRC errors in Fibre Channel frames

for a specified Source ID (SID) and Destination ID (DID) pair. An end-to-end performance monitor includes

these counts:

•

RX_COUNT (words in frames received at the port)

•

TX_COUNT (words in frames transmitted from the port)

•

CRC_COUNT (frames with CRC errors received at or transmitted from the port)

To enable end-to-end performance monitoring, you must configure an end-to-end monitor on a port,

specifying the SID-DID pair (in hexadecimal). The monitor counts only those frames with matching SID

and DID.

switch:admin> perfshowalpacrc 1/1

AL_PA CRC

count

--------------------

0xd9 0

switch:admin> perfshowalpacrc 1/1, 0xd9

The CRC count at ALPA 0xd9 on port 1 is 0x000000000.

switch:admin> perfclralpacrc 1/1, 0xd9

CRC error count at AL_PA 0xd9 on port 1 is cleared.

switch:admin> perfclralpacrc 1/1

No AL_PA value is specified. This will clear all AL_PA CRC

counts on port 1. Do you want to continue? (yes, y, no, n): [no] y

Please wait ...

All alpa CRC counts are cleared on port 1.