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DES-3200-10/18/28/28F Layer 2 Ethernet Managed Switch User Manual
Offset
C
hunk
Offset
Chunk0
Offset
Chunk1
Offset
Chunk2
Offset
Chunk3
Offset
Chunk4
Offset
Chunk5
Offset
Chunk6
Offset
Chunk7
Offset
Chunk8
Offset
Chunk9
Offset
Chunk10
Offset
Chunk11
Offset
Chunk12
Offset
Chunk13
Offset
Chunk14
Offset
Chunk15
Byte
127 3 7
11 15 19 23 27 31 35 39 43 47 51 55 59
Byte
128 4 8
12 16 20 24 28 32 36 40 44 48 52 56 60
Byte
1 5 9
13 17 21 25 29 33 37 41 45 49 53 57 61
Byte
2 6 10
14 18 22 26 30 34 38 42 46 50 54 58 62
Offset
Chunk
Offset
Chunk15
Offset
Chunk16
Offset
Chunk17
Offset
Chunk18
Offset
Chunk19
Offset
Chunk20
Offset
Chunk21
Offset
Chunk22
Offset
Chunk23
Offset
Chunk24
Offset
Chunk25
Offset
Chunk26
Offset
Chunk27
Offset
Chunk28
Offset
Chunk129
Offset
Chunk30
Byte
63 67 71 75 79 83 87 91 95 99 103 107 111 115 119 123
Byte
64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124
Byte
65 69 73 77 81 85 89 93 97 101 105 109 113 117 121 125
Byte
66 70 74 78 82 86 90 94 98 102 106 110 114 118 122 126
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 ARP
Destination
address
Source address Ethernet
type
H/W
type
Protocol
type
H/W
address
length
Protocol
address
length
Operation Sender
H/W
address
Sender
protocol
address
Target
H/W
address
Target
protocol
address
(6-byte) (6-byte) (2-byte) (2-byte) (2-byte) (1-byte) (1-byte) (2-byte) (6-byte) (4-byte) (6-byte) (4-byte)
01 02 03 04 05 06 0806
0a5a5a5a
(10.90.90.90)
Table-7: A completed ARP packet contained in Ethernet frame
224