HP AE370A HP StorageWorks Fabric OS 6.x administrator guide (5697-0015, May 20 - Page 345
Monitoring AL_PAs, Monitoring end-to-end performance
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Monitoring AL_PAs You can use the perfShowAlpaCrc command to display the CRC error count for all AL_PA devices or for a single AL_PA on a specific active L_Port. The following example displays the CRC error count for all AL_PA devices on a port: switch:admin> perfshowalpacrc 1/1 AL_PA CRC count 0xd9 0 The following example displays the CRC error count for a single AL_PA device on a port: switch:admin> perfshowalpacrc 1/1, 0xd9 The CRC count at ALPA 0xd9 on port 1 is 0x000000000. The following example clears the CRC error count: switch:admin> perfclearalpacrc 1/1, 0xd9 CRC error count at AL_PA 0xd9 on port 1 is cleared. switch:admin> perfclearalpacrc 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. In 3.1.0, 4.1.0, and later versions, you can use the portStatsClear command to clear 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. Each SID or DID has the following three fields. • Domain ID (DD) • Area ID (AA) • AL_PA (PP) For example, the SID 0x118a0f denotes DD 0x11, AA 0x8a, and AL_PA 0x0f. You can monitor end-to-end performance using the perfMonitorShow command, as described in "Displaying monitor counters" on page 355. You can clear end-to-end counters using the perfMonitorClear command, as described in "Clearing monitor counters" on page 359. Fabric OS 6.x administrator guide 345