D-Link DGS-3620-28PC-SI Product Manual page 475

xStack® DGS-3620 Series Managed Switch Web UI Reference Guide
Offset Offset Offset Offset
Chunk Chunk0 Chunk1 Chunk2
127 3 7
Byte
128 4 8
Byte
1 5 9
Byte
2 6 10
Byte
Offset Offset Offset Offset
Chunk Chunk16 Chunk17 Chunk18
63 67 71
Byte
64 68 72
Byte
65 69 73
Byte
66 70 74
Byte
The following table indicates a completed ARP packet contained in Ethernet frame which is the pattern for the
calculation of packet offset.
Command
Step 1: create access_profile profile_id 1
profile_name 1 ethernet source_mac
FF-FF-FF-FF-FF-FF ethernet_type
Step 2: config access_profile profile_id 1
add access_id 1 ethernet source_mac
01-02-03-04-05-06 ethernet_type
0x806 port 1-12 permit
Step 3: create access_profile profile_id 2
profile_name 2 packet_content_mask
offset_chunk_1 3 0xFFFF
offset_chunk_2 7 0xFFFF
offset_chunk_3 8 0xFFFF0000
Step 4: config access_profile profile_id 2
add access_id 1 packet_content
offset_chunk_1 0x806 offset_chunk_2
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
Chunk19 Chunk20 Chunk21 Chunk22
75 79 83
76 80 84
77 81 85
78 82 86
Table 6. Chunk and Packet Offset
Table 0-5 A Completed ARP Packet Contained in an Ethernet Frame
Offset Offset Offset
Chunk7 Chunk8 Chunk9
27 31 35
28 32 36
29 33 37
30 34 38
Offset Offset Offset Offset
Chunk23 Chunk24 Chunk25
87 91 95 99
88 92 96 100
89 93 97 101
90 94 98 102
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 for
Sender IP in ARP packet. (Brown in Table 6, 31st
and 32nd bytes)
Configure access profile 2.
The rest of the ARP packets whose Sender IP claim
they are the gateway's IP will be dropped.
465
Offset Offset Offset
Chunk10 Chunk11 Chunk12 Chunk13
39 43 47
40 44 48
41 45 49
42 46 50
Offset Offset Offset
Chunk26 Chunk27 Chunk28
103 107 111
104 108 112
105 109 113
106 110 114
Offset Offset Offset
Chunk14 Chunk15
51 55 59
52 56 60
53 57 61
54 58 62
Offset Offset Offset
Chunk29 Chunk30 Chunk31
115 119 123
116 120 124
117 121 125
118 122 126