HP MicroLogix 1761-NET-ENI manual TCP/IP Parameters Function Format, On the subnet mask, Zero

Appendix B

BOOTP Configuration Method (default)

BOOTP (Bootstrap protocol) is a low-level protocol that provides configuration information to other nodes on a TCP/IP network with DOS, Microsoft Windows, Windows NT, Windows 9x, VMS, and HP-UNIX platforms. BOOTP configuration files let you automatically assign IP addresses to the ENI. You can also set Subnet Masks and Gateway addresses using BOOTP.

To use BOOTP, a BOOTP Server must exist on the local Ethernet Subnet. The server is a computer that has BOOTP Server software installed and running which reads a text file containing network information for individual nodes on the network.

TIP

If you do not have BOOTP Server capabilities on your network, and you want to dynamically configure the ENI, you can obtain the BOOTP software by contacting your local Rockwell Automation representative.

When the ENI receives a configuration message via BOOTP, it uses the data within the message to configure its TCP/IP parameters.

Table 2.1 TCP/IP Parameters

Function	Format	Notes
IP Address	Integer	This is a unique IP Address for the ENI.
		Format is aaa.bbb.ccc.ddd.
		Default is 000.000.000.000.
Subnet Mask	optional(1)	If not sent, the default mask is derived from the class
		of the IP address. See page 4-13for more information
		on the subnet mask.
Gateway	optional(1)	Only needed if a Gateway is present on the Subnet.
		Default is 000.000.000.
Security Mask 1	Zero	The default is no security mask 000.000.000.000. See
		page 4-13for more information on the Security Mask.
Security Mask 2

(1)Depending upon whether your BOOTP server allows these optional fields to be included, you might not be able to configure these parameters using the BOOTPTAB file. If that is the case, configure them using the soft configuration method. See page 4-1for more information. If you do not need to define a Subnet Mask or Gateway, simply ignore these parameters.

Publication 1761-UM006A-EN-P - February 2001