D-Link DGS-3120-48PC Reference Manual page 783

xStack
Byte
1 5 9
Byte
2 6 10
Offset Offset Offset Offset
Chunk Chunk16 Chunk17 Chunk18
Byte
63 67 71
Byte
64 68 72
Byte
65 69 73
Byte
66 70 74
The following table indicates a completed ARP packet contained in Ethernet frame which is the
pattern for the calculation of packet offset.
Table 5 A Completed ARP Packet Contained in an Ethernet Frame
Command
Step
create access_profile_id 1
1:
profile_name 1 ethernet source_mac
FF-FF-FF-FF-FF-FF ethernet_type
Step
config access_profile profile_id 1 add
2:
access_id 1 ethernet source_mac 01-
02-03-04-05-06 ethernet_type 0x806
port 1-12 permit
Step
create access_profile profile_id 2
3:
profile_name 2 packet_content_mask
offset_chunk_1 3 0xFFFF
offset_chunk_2 7 0xFFFF
offset_chunk_3 8 0xFFFF0000
®
DGS-3120 Series Managed Switch CLI Reference Guide
13 17 21 25
14 18 22 26
Offset Offset Offset Offset
Chunk19 Chunk20 Chunk21 Chunk22
75 79 83 87
76 80 84 88
77 81 85 89
78 82 86 90
Table 6. Chunk and Packet Offset
29 33 37 41
30 34 38 42
Offset Offset Offset Offset
Chunk23 Chunk24 Chunk25 Chunk26
91 95 99 103
92 96 100 104
93 97 101 105
94 98 102 106
Description
Create access profile 1 to match Ethernet
Type and Source MAC address.
Configure access profile 1
Only if the gateway's ARP packet that
contains the correct Source MAC in the
Ethernet frame can pass through the
Switch.
Create access profile 2
The first chunk starts from Chunk 3 mask
for Ethernet Type. (Blue in Table 6, 13th
and 14th bytes)
The second chunk starts from Chunk 7
mask for Sender IP in ARP packet. (Green
in Table 6, 29th and 30th bytes)
The third chunk starts from Chunk 8 mask
779
45 49 53 57
46 50 54 58
Offset Offset Offset Offset
Chunk27 Chunk28 Chunk29 Chunk30
107 111 115 119
108 112 116 120
109 113 117 121
110 114 118 122
61
62
Offset
Chunk31
123
124
125
126