HP A7533A HP StorageWorks Fabric OS 6.x administrator guide (5697-0015, May 20 - Page 346
Adding end-to-end monitors
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NOTE: For end-to-end monitors, CRC counters are not displayed on the 4/8 SAN Switch, 4/16 SAN Switch, SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 400 Multi-protocol Router, 4/256 SAN Director, and DC Director switches. 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. 4/8 SAN Switch and 4/16 SAN Switch models allow up to eight end-to-end monitors. The SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 400 Multi-protocol 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 DC Director allows up to 1024 end-to-end monitors. (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 blade, end-to-end monitors are supported on the 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 the 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 on the PID format used by the fabric. See "Configuring the PID Format" on page 489 for more information. Figure 27 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 27 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 27, 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. 346 Administering Advanced Performance Monitoring