HP A7533A HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, Nove - Page 328
Adding end-to-end monitors, Setting end-to-end monitors on a port
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Adding end-to-end monitors An end-to-end monitor counts the following items for a port: number of words received, number of words transmitted, and number of CRC errors detected in frames. 4/16 SAN Switch and 4/8 SAN Switch, Brocade 4Gb SAN Switch for HP p-Class BladeSystem, Brocade 4Gb SAN Switch for HP c-Class BladeSystem, SAN Switch 2/8V, SAN Switch 2/16V, SAN Switch 2/32, and SAN Director 2/128 models allow up to eight end-to-end monitors. The SAN Switch 4/32, SAN Switch 4/32B, 4/64 SAN Switch, 400 MP Router and 4/256 SAN Director models allow up to 256 end-to-end monitors shared by all ports in the same ASIC chip. (The number of interswitch links configured on the switch affects the amount of resources available for end-to-end monitors.) The FC4-48 blade allows end-to-end monitors on all 48 ports. For the FC4-16IP, end-to-end monitors are supported on the ASIC FC ports (ports 0 through 7), but not on the GbE ports. You cannot add end-to-end monitors to interswitch links. Identical end-to-end monitors cannot be added to the same port. Two end-to-end monitors are considered identical if they have the same SID and DID values after applying the end-to-end mask. The monitor count is qualified using either of following conditions: • For frames received at the port with the end-to-end monitor installed, the frame SID is the same as "SourceID" and the frame DID is the same as "DestID". The RX_COUNT and CRC_COUNT are updated accordingly. • For frames transmitted from the port with the end-to-end monitor installed, the frame DID is the same as "SourceID" and the frame SID is the same as "DestID". The TX_COUNT and CRC_COUNT are updated accordingly. NOTE: The relationship between the area ID for a port and the port number depends upon the PID format used by the fabric. Refer to "Configuring the PID format" on page 423 for more information. Figure 19 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. Figure 19 Setting end-to-end monitors on a port SID 0x051200 Host A Switch x . . . Monitor 0 domain 0x05, switch area ID 0x12 AL_PA 0x00 Switch y DID 0x111eef . . . Dev B Monitor 1 domain 0x11, switch area ID 0x1e AL_PA 0xef NOTE: End-to-end performance monitoring looks at traffic on the receiving port respective to the SID only. In Figure 19, 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. To monitor the traffic from Host A to Dev B switch:admin> perfaddeemonitor 2/2, "0x051200" "0x111eef" End-to-End monitor number 0 added. 340 Administering Advanced Performance Monitoring (APM)
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