HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.x administrator guide (5697 - Page 331

Figure 35 shows two devices: • Host A is connected to domain 5 (0x05), switch area ID 18 (0x12), AL_PA 0x00 on Switch X. • Dev B is a storage device connected to domain 17 (0x11), switch area ID 30 (0x1e), AL_PA 0xef on Switch Y. SID 0x051200 Switch x Switch y DID 0x111eef Host . . . A . . . Dev B Monitor 0 domain 0x05, switch area ID 0x12 AL_PA 0x00 Monitor 1 domain 0x11, switch area ID 0x1e AL_PA 0xef Figure 35 Setting end-to-end monitors on a port NOTE: End-to-end performance monitoring looks at traffic on the receiving port respective to the SID only. In Figure 35, if you add a monitor to slot 2, port 2 on Switch x, specifying Dev B as the SID and Host A as the DID, no counters (except CRC) will be incremented. Monitoring the traffic from Host A to Dev B: Add Monitor 0 to slot 2, port 2 on Switch x, specifying 0x051200 as the SID and 0x111eef as the DID, as shown in the following example: switch:admin> perfaddeemonitor 2/2, "0x051200" "0x111eef" End-to-End monitor number 0 added. Monitor 0 counts the frames that have an SID of 0x051200 and a DID of 0x111eef. For monitor 0, RX_COUNT is the number of words from Host A to Dev B, TX_COUNT is the number of words from Dev B to Host A, and CRC_COUNT is the number of frames in both directions with CRC errors. Monitoring the traffic from Dev B to Host A: Add Monitor 1 to slot 2, port 14 on Switch y, specifying 0x111eef as the SID and 0x051200 as the DID, as shown in the following example. switch:admin> perfaddeemonitor 2/14, "0x111eef" "0x051200" End-to-End monitor number 1 added. Monitor 1 counts the frames that have an SID of 0x111eef and a DID of 0x051200. For monitor 1, RX_COUNT is the number of words from Dev B to Host A, TX_COUNT is the number of words from Host A to Dev B, and CRC_COUNT is the number of frames in both directions with CRC errors. Figure 36 shows several switches and the correct ports on which to add performance monitors for a specified SID-DID pair. SID 0x051200 Host . . . A Add monitors here . . . . . . DID 0x111eef . . . Dev B Figure 36 Proper placement of end-to-end performance monitors Setting a mask for end-to-end monitors End-to-end monitors count the number of words in Fibre Channel frames that match a specific SID/DID pair. If you want to match only part of the SID or DID, you can set a mask on the port to compare only certain parts of the SID or DID. By default, the frame must match the entire SID and DID to trigger the monitor. By setting a mask, you can choose to have the frame match only one or two of the three fields (Domain ID, Area ID, and AL_PA) to trigger the monitor. Fabric OS 6.1.x administrator guide 331