User guide

22 DC 900-1338I
Protocol Software Toolkit Programmer Guide
tiple data links and a variety of network services to LAN-based clients. Figure 1–1 shows
the Freeway configuration.
To maintain high data throughput, Freeway uses a multi-processor architecture to sup-
port the LAN and WAN services. The LAN interface is managed by a single-board com-
puter, called the server processor. It uses commercially available operating systems such
as VxWorks or BSD Unix to provide a full-featured base for the LAN interface and lay-
ered services needed by Freeway.
Freeway can be configured with multiple WAN interface processor boards, each of
which is a Protogate ICP. Each ICP runs the communication protocol software using
OS/Impact, Protogate’s real-time operating system.
Figure 1–1: Freeway Configuration
WAN
Interface
Processors
Freeway
Ethernet LAN
● ● ●
ICP
ICP
3413
Client n
Application
WAN Protocol
Options
Defense
Commercial
X.25
Bisync
HDLC . . .
SCADA
Financial
SWIFT
CHIPS
Telerate
Telekurs
Reuters
40+ Market
Feeds . . .
● ● ●
Industry Standard Bus
Client 2
Application
Freeway
API
Freeway
API
Server Processor
Client 1
Application
Freeway
API