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Not aware of a single document that will show that for all platforms. Best way
is "show interface hardware-mappings". "Unit" and "Slice" are the main points
of reference (unit == ASIC instance, slice == pipeline).
E.g., 93180yc-ex:
leaf1# sh int hard
Legends:
SMod - Source Mod. 0 is N/A
Unit - Unit on which port resides. N/A for port channels
HPort - Hardware Port Number or Hardware Trunk Id:
HName - Hardware port name. None means N/A
FPort - Fabric facing port number. 255 means N/A
NPort - Front panel port number
VPort - Virtual Port Number. -1 means N/A
Slice - Slice Number. N/A for BCM systems
SPort - Port Number wrt Slice. N/A for BCM systems
SrcId - Source Id Number. N/A for BCM systems
MacIdx - Mac index. N/A for BCM systems
MacSubPort - Mac sub port. N/A for BCM systems
Name Ifindex Smod Unit HPort FPort NPort VPort Slice SPort SrcId MacId
MacSP
Eth1/1 1a00 1016255 0 -10 16324 0
Eth1/2 1a000200 1017255 4 -10 17344 2
Eth1/3 1a000400 1018255 8 -10 18364 4
Eth1/4 1a000600 1019255 12-10 19384 6
Eth1/5 1a000800 1012255 16-10 12243 0
Eth1/6 1a000a00 1013255 20-10 13263 2
Eth1/7 1a000c00 1014255 24-10 14283 4
Eth1/8 1a000e00 1015255 28-10 15303 6
Eth1/9 1a001000 108 255 32-10 8 162 0
Eth1/101a001200 109 255 36-10 9 182 2
Eth1/111a001400 1010255 40-10 10202 4
Eth1/121a001600 1011255 44-10 11222 6
Eth1/131a001800 104 255 48-10 4 8 1 0
Eth1/141a001a00 105 255 52-10 5 101 2
Eth1/151a001c00 106 255 56-10 6 121 4
Eth1/161a001e00 107 255 60-10 7 141 6
Eth1/171a002000 100 255 64-10 0 0 0 0
Eth1/181a002200 101 255 68-10 1 2 0 2
Eth1/191a002400 102 255 72-10 2 4 0 4
Eth1/201a002600 103 255 76-10 3 6 0 6
Eth1/211a002800 1060255 80-11 2040140
Eth1/221a002a00 1061255 84-11 2142142
Eth1/231a002c00 1062255 88-11 2244144
Eth1/241a002e00 1063255 92-11 2346146
Eth1/251a003000 1056255 96-11 1632130
Eth1/261a003200 1057255 100 -11 1734132
Eth1/271a003400 1058255 104 -11 1836134
Eth1/281a003600 1059255 108 -11 1938136
Eth1/291a003800 1052255 112 -11 1224120
Eth1/301a003a00 1053255 116 -11 1326122
Eth1/311a003c00 1054255 120 -11 1428124
Eth1/321a003e00 1055255 124 -11 1530126
Eth1/331a004000 1048255 128 -11 8 16110
Eth1/341a004200 1049255 132 -11 9 18112
Eth1/351a004400 1050255 136 -11 1020114
Eth1/361a004600 1051255 140 -11 1122116
Eth1/371a004800 1044255 144 -11 4 8 100
Eth1/381a004a00 1045255 148 -11 5 10102
Eth1/391a004c00 1046255 152 -11 6 12104
Eth1/401a004e00 1047255 156 -11 7 14106
Eth1/411a005000 1076255 160 -11 3664170
Eth1/421a005200 1077255 164 -11 3766172
Eth1/431a005400 1078255 168 -11 3868174
Eth1/441a005600 1079255 172 -11 3970176
Eth1/451a005800 1036255 176 -10 36648 0
Eth1/461a005a00 1037255 180 -10 37668 2
Eth1/471a005c00 1038255 184 -10 38688 4
Eth1/481a005e00 1039255 188 -10 39708
