Logical and Physical LocationsThe system uses physical location codes in conjunction with AIX location codes toprovide mapping of the failing field replaceable units. The location codes are producedby the system unit’s firmware and AIX.Physical Location CodesPhysical location codes provide a mapping of logical functions in a platform (orexpansion sites for logical functions, such as connectors or ports) to their specificlocations within the physical structure of the platform.Location Code FormatThe format for the location code is a string of alphanumeric characters separated by adash (-), slash (/), pound sign (#) or period (.) character. The base location is all of theinformation preceding the slash (/) or pound sign (#). The base location identifies adevice that is connected to or plugged into the parent. Extended location informationfollow the slash (/). Extended location information identifies a device that is part of theparent, a connector, or a cable. Cable information follows the pound sign (#). Cableinformation identifies a cable that is connector to parent. For examples:v P1-C1 identifies a processor card C1 plugged into planar P1.v P1-M1 identifies a memory card M1 plugged into planar P1.v P1-K1 identifies a keyboard attached to K1 on planar P1.v P1/S1 identifies serial port 1 controller on planar P1, the connector for serial port 1,or the cable attached to serial port 1.v P1-I2/E3 identifies a Ethernet controller 3 on the card in slot 2 (I2) on planar P1, theconnector for Ethernet controller 3 or the cable attached to Ethernet controller 3.v P1-I2#E3 identifies the cable attached to Ethernet controller 3 on the card in slot 2(I2) on planar P1.The period (.) identifies sub-locations (DIMMs on a memory card, SCSI addresses,cables). For examples:v P1-M1.4 identifies DIMM 4 on memory card 1 on planar P1.v P1-C1.1 identifies processor 1 on planar P1.v P2-Z1-A3.1 identifies a SCSI device with SCSI address of LUN 1 at SCSI ID 3attached to SCSI bus 1 from planar 2.v P1-I2#E3.2 identifies the second in a series of cables attached to Ethernet controller3 on the card in slot 2 (I2) on planar P1.Depending on the AIX and firmware levels, AIX Diagnostics may include the extendedlocation information when identifying a planar or card. The extended locationinformation or cable information is always included when identifying a cable orconnector. Location codes with extended location information that are displayed withouta description identifying the devices always identify the cable attached to the port.Chapter 5. Using the Online and Standalone Diagnostics 119
