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C-2
Initialization Information
BOOTP Request and Reply Format
BOOTP request and reply messages use the same packet format. The BOOTP packet includes
multiple fields divided into the following areas:
Standard Area
Contains fields for specifying basic BOOTP message information, including:
Message type (request or reply)
MAC address of requesting device
IP address assignment of requesting device
Boot file name for the requesting device
Values in some standard fields that must be specified and others that are optional,
depending on whether the BOOTP message is a request or reply
Vendor-Specific
Contains fields for use as defined by the vendor, for example: to set values for
operating parameters
Area
BOOTP packet format is defined in detail in the following specifications:
RFC 1542, "Clarifications and Extensions for the Bootstrap Protocol," by W. Wimer
(October 1993)
RFC 2132, "DHCP Options and BOOTP Vendor Extensions," by S. Alexander and R. Droms
(March 1997)
Refer to these specifications for complete information on the BOOTP packet format and field
descriptions. A general discussion of the BOOTP reply and request is provided in the following
subsections.
BOOTP Request
In the BOOTP request, the OM 1000 includes:
A value indicating that the message is a BOOTP request
The OM 1000 Ethernet MAC address
The BOOTP request is transferred using User Datagram Protocol (UDP).
BOOTP Server Reply
In the BOOTP reply to the OM 1000, the BOOTP server includes:
A value indicating that the message is a BOOTP reply
The IP address of the boot server
The IP address assigned to the OM 1000 Ethernet port
The file-of-files (FOF) name for the OM 1000
The path for the FOF
The network mask
The BOOTP reply is transferred using UDP.
OM 1000 Installation and Operation Manual
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