User's Manual

29/OCT/2014 REVIEW DRAFT — CISCO CONFIDENTIAL
5-7
Cisco IR500 Series WPAN Gateway and Range Extender Installation and Configuration Guide
Chapter 5 Operation and Configuration
Information about Raw Socket Transport and MAP-T
Figure 5-4 Raw Socket Client/Server Setup between Routers and SCADA Server with Direct
RAW Socket Communication
Raw Socket Master and Client set-up
between routers and SCADA server
Application communicates directly
over Raw Socket (IP + TCP/UDP ports)
IP Infrastructure
Ethernet
SCADA
Server
391929
RS232 or
RS485
RTUs
WPAN Range
Extenders
WPAN
Gateways
(Clients)
CGR 2010
(Server)
CGR 1000
Series Routers
(Clients)
In Figure 5-4, a Raw Socket CGR1000 router client receives streams of serial data from the WPAN
gateway attached RTUs and accumulates the data before placing it into packets. The CGR1000 Raw
Socket clients initiates a TCP connection with the SCADA server, and sends the packetized data across
the IP network to the SCADA server. The SCADA server communicates directly over Raw Socket IP and
TCP/UDP ports.
Raw Socket and Serial Protocol Operation
Figure 5-5 shows a Raw Socket DA deployment scenario involving a SCADA server, WPAN range
extenders, and WPAN gateways with RTUs attached to the serial ports.
Figure 5-5 Raw Socket and Serial Protocol
WPAN Gateway Remote
Terminal Units (RTUs)
(Clients)
Raw Socket connection
Serial protocol connection
RS232 or
RS485
IP
Infrastructure
Ethernet
SCADA
Server
391926
When running a serial protocol over a Raw Socket, there are two different layers that establish their own
connectivity:
• Raw Socket layer—Assuming the SCADA server handles the Raw Socket session (the other
alternative is the Raw Socket is handled by a router), the Raw Socket session is established between
the SCADA server and the WPAN gateway. One side is the listener (Raw Socket TCP server), the
other is the client (Raw Socket TCP client).
• Serial protocol layer—The serial protocol session, i.e. DNP3, IEC 60870-5-101, Modbus, etc., runs
on the serial protocol layer, and this also has server/master and client sides. This serial protocol
session runs from the SCADA server to the attached device (RTU).