D-Link DES-3528 User Manual page 266

xStack DES-3528 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
Offset Offset Offset Offset
Chunk Chunk0 Chunk1 Chunk2
Byte 127 3 7
Byte 128 4 8
Byte 1 5 9
Byte 2 6 10
Offset Offset Offset Offset
Chunk Chunk15 Chunk16 Chunk17
Byte 63 67 71
Byte 64 68 72
Byte 65 69 73
Byte 66 70 74
Table-6: Chunk and Packet offset Indicates a completed ARP packet contained in the Ethernet frame, which is the
pattern for the calculation of packet offset.
Ethernet Header
Destination Source address
address
(6-byte) (6-byte)
01 02 03 04 05 06 0806
Table-7: A completed ARP packet contained in Ethernet frame
Offset Offset Offset Offset
Chunk3 Chunk4 Chunk5 Chunk6
11 15 19 23
12 16 20 24
13 17 21 25
14 18 22 26
Offset Offset Offset Offset
Chunk18 Chunk19 Chunk20 Chunk21
75 79 83
76 80 84
77 81 85
78 82 86
Ethernet H/W type Protocol H/W
type type address
length
(2-byte) (2-byte) (2-byte) (1-byte)
Offset Offset Offset Offset
Chunk7 Chunk8 Chunk9 Chunk10
27 31 35 39
28 32 36 40
29 33 37 41
30 34 38 42
Offset Offset Offset
Chunk22 Chunk23 Chunk24
87 91 95 99
88 92 96 100
89 93 97 101
90 94 98 102
ARP
Protocol Operation
address
length
(1-byte) (2-byte)
250
Offset Offset Offset
Chunk11 Chunk12 Chunk13
43 47 51
44 48 52
45 49 53
46 50 54
Offset Offset Offset
Chunk25 Chunk26 Chunk27 Chunk28
103 107 111
104 108 112
105 109 113
106 110 114
Sender Sender protocol Target
H/W address H/W
address address
(6-byte) (4-byte) (6-byte)
0a5a5a5a
(10.90.90.90)
Offset Offset
Chunk14 Chunk15
55 59
56 60
57 61
58 62
Offset Offset Offset
Chunk129 Chunk30
115 119 123
116 120 124
117 121 125
118 122 126
Target
protocol
address
(4-byte)