Table | Arbitrated Loop Node Number to ALPA Lookup Table |
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0:0x01 | 21:0x2E | 42:0x52 | 63:0x74 | 84:0xA6 | 105:0xC9 |
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13:0x25 | 34:0x47 | 55:0x6A | 76:0x97 | 97:0xB6 | 118:0xDA |
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14:0x26 | 35:0x49 | 56:0x6B | 77:0x98 | 98:0xB9 | 119:0xDC |
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15:0x27 | 36:0x4A | 57:0x6C | 78:0x9B | 99:0xBA | 120:0xE0 |
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16:0x29 | 37:0x4B | 58:0x6D | 79:0x9D | 100:0xBC | 121:0xE1 |
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17:0x2A | 38:0x4C | 59:0x6E | 80:0x9E | 101:0xC3 | 122:0xE2 |
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18:0x2B | 39:0x4D | 60:0x71 | 81:0x9F | 102:0xC5 | 123:0xE4 |
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19:0x2C | 40:0x4E | 61:0x72 | 82:0xA3 | 103:0xC6 | 124:0xE8 |
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20:0x2D | 41:0x51 | 62:0x73 | 83:0xA5 | 104:0xC7 | 125:0xEF |
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SCC Addressing Option
When the FCR200 is configured to use SCC addressing, the unit is capable of responding as a controller device to the FCP Initiator, or routing the FCP request to a specified BUS:TARGET:LUN triplet. When a request using the Peripheral Device Addressing Method is received (An FCP command with the LUN field with bits 7 and 6 of byte 0 are set to 0), the unit routes the request to the FCR200, which acts on the command directly. When a request using the Logical Unit Addressing Method is received (bits 7 and 6 set to 10b), the request is routed to the BUS:TARGET:LUN as specified in the defined field.
Host systems using SCC addressing will typically do initial device discovery using the Peripheral Device Addressing method. On issuing an INQUIRY command, the host will receive the FCR200 inquiry data (Appendix C), indicating the device type as a controller device. The host will then know on this basis that subsequent commands to attached devices will use the Logical Unit Addressing method. The host can perform discovery by either walking through the BUS:TARGET:LUN values as would a standard SCSI driver, or by issuing a REPORT LUNS command (Appendix B). This command is sent to the controller (using the Peripheral Device Addressing Method), and returns a table indicating attached devices. The host can then perform actions on these devices directly without having to perform discovery through all possible combinations.
SCC Addressing Option
