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A 32-bit (4 octet) unsigned integer value representing the version of the packet capture file being used. This
document describes version number 1.
Datalink Type:
A 32-bit (4 octet) field identifying the type of datalink header used in the packet records that follow. The datalink
type codes are listed in the table below. Values 0 - 1000 are reserved, to maximize compatibility with the
RFC1761 snoop version 2 format.
Datalink Type Code
Reserved 0 - 1000
Un-encapsulated HCI (H1) 1001
HCI UART (H4) 1002
HCI BSCP 1003
HCI Serial (H5) 1004
Unassigned 1005 - 4294967295
Table 7.1 - Datalink Codes
Packet Record Format
Each packet record holds a partial or complete copy of one packet as well as some descriptive information about
that packet. The packet may be truncated in order to limit the amount of data to be stored in the packet file.
Each packet record holds 24 octets of descriptive information about the packet, followed by the packet data,
which is variable-length, and an optional pad field. The descriptive information is structured as six 32-bit (4-octet)
integer values.
The structure of the packet record is as follows:
Original Length
A 32-bit unsigned integer representing the length in octets of the captured packet as received via a network.
Included Length
Chapter 7 General Information TELEDYNE LECROY
Frontline BPA low energy Hardware & Software User Manual 202