Cisco Cisco Firepower Management Center 4000 Entwickleranleitung
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FireSIGHT eStreamer Integration Guide
Chapter 4 Understanding Discovery & Connection Data Structures
Host Discovery and Connection Data Blocks
MAC Address Specification Data Block
The MAC Address Specification data block conveys an individual MAC address. MAC Address
Specification data blocks are used in User Protocol, Address Specification, and User Hosts data blocks.
The MAC Address Specification data block has a block type of 63 in the series 1 group of blocks.
Specification data blocks are used in User Protocol, Address Specification, and User Hosts data blocks.
The MAC Address Specification data block has a block type of 63 in the series 1 group of blocks.
The following diagram shows the format of the MAC Address Specification data block:
The following table describes the components of the MAC Address Specification data block.
Byte
0
1
2
3
Bit
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
MAC Address Specification Block Type (63)
MAC Address Specification Block Length
MAC Block 1
MAC Block 2
MAC Block 3
MAC Block 4
MAC Block 5
MAC Block 6
Table 4-52
MAC Address Specification Data Block Fields
Field
Data Type
Description
MAC Address
Specification Block Type
Specification Block Type
uint32
Initiates a MAC Address Specification data block. This
value is always
value is always
63
.
MAC Address
Specification Block Length
Specification Block Length
uint32
Total number of bytes in the MAC Address Specification
data block, including eight bytes for the MAC Address
Specification block type and length fields, plus the number
of bytes of MAC address specification data that follows.
data block, including eight bytes for the MAC Address
Specification block type and length fields, plus the number
of bytes of MAC address specification data that follows.
MAC Address Blocks 1 - 6 uint8
The blocks of the MAC address in sequential order.