Chaparral FS1310, User Manual

Page: 73 / 96

Address and Device Mapping
A-3
Loop ID to AL_PA Mapping
During the Fibre Channel Arbitrated Loop (FC-AL) initialization process, a unique
Arbitrated Loop Physical Address (AL_PA) value is assigned to each port on the loop. Not
all of the 256 hex values are allowed as AL_PA values per FC-AL, so Loop IDs are used
to represent the 125 addresses that the router can use. You can assign a Loop ID to the
router. See
Changing the Router’s Loop ID on page 3-8 .
Table A-2 shows how a Loop ID value maps to an AL_PA. If you set the Loop ID to SOFT,
the router attempts to obtain an available Loop ID, in the following order: 0, 1, 2, etc.
Table A-2. Arbitrated loop physical addresses
Loop ID
(decimal)
AL_PA
(hex)
Loop ID
(decimal)
AL_PA
(hex)
Loop ID
(decimal)
AL_PA
(hex)
0 EF 19 CA 38 AA
1 E8 20 C9 39 A9
2 E4 21 C7 40 A7
3 E2 22 C6 41 A6
4 E1 23 C5 42 A5
5 E0 24 C3 43 A3
6 DC 25 BC 44 9F
7 DA 26 BA 45 9E
8 D9 27 B9 46 9D
9 D6 28 B6 47 9B
10 D5 29 B5 48 98
11 D4 30 B4 49 97
12 D3 31 B3 50 90
13 D2 32 B2 51 8F
14 D1 33 B1 52 88
15 CE 34 AE 53 84
16 CD 35 AD 54 82
17 CC 36 AC 55 81
18 CB 37 AB 56 80
57 7C 80 55 103 31
58 7A 81 54 104 2E
59 79 82 53 105 2D
60 76 83 52 106 2C
61 75 84 51 107 2B