Installation guide

DC 900-1325I 73
Chapter
5
Interfacing with the SRA
Chapter 3 discussed how the SRA interfaced with ICP protocol software using the DLI
API. This chapter outlines some of the ways that users and client systems can interface
with the SRA.
5.1 Initialization Files
The protocol loopback programs are designed to be run from the BSD shell, as such
they use the console to input data from the user pertaining to which ICP and port to run
on. In most cases, your SRA will be started at Freeway boot time without the console,
which poses the problem of how to get user input data to the SRA. The simplest way to
feed data to your SRA is through the use of initialization files. These are normally text
files that contain configuration information and/or commands for the SRA. You create
these files and place them on the Freeway disk drive. Then you program your SRA to
look for these files at startup and read the information from the files. This method
allows you to reconfigure parameters within the SRA simply by updating the initializa-
tion files and then rebooting the Freeway server.
The following list contains some suggestions on the basic information that your initial-
ization file should contain:
• ICP board number
• ICP port (link) number
• Protocol software running on the ICP board
• Whether or not to enable the link at SRA startup