User's Manual

29/OCT/2014 REVIEW DRAFT — CISCO CONFIDENTIAL
5-5
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
For more information about Raw Socket and MAP-T, see the “Information about Raw Socket Transport
and MAP-T” section on page 5-5.
Information about Raw Socket Transport and MAP-T
• Raw Socket, page 5-5
• MAP-T, page 5-8
Raw Socket
Raw Socket is a method for transporting serial data through an IP network. It transports streams of
characters from one serial interface to another over an IP network for utility applications.The feature can
be used to transport Supervisory Control and Data Acquisition (SCADA) data from Remote Terminal
Units (RTUs). For the WPAN gateway and WPAN range extender deployment, Raw Socket Transport
uses TCP as the transport protocol.
Raw Socket Transport supports the following for each asynchronous serial interface:
• TCP as the transport protocol, with built-in auto TCP connection retry mechanism.
• Interface configuration as either a server or a client. The WPAN gateway can only be set up as a
server or as a client but not both simultaneously.
• One server per interface, but multiple clients.
Note For the one server per interface with multiple clients arrangement, the number of clients may be limited
to one or two. Contact Cisco for more information.
For more information about the Raw Socket deployment read the following sections:
• TCP Transport, page 5-5
• Raw Socket Configurations, page 5-6
• Raw Socket and Serial Protocol Operation, page 5-7
TCP Transport
The TCP transport CG FAN scenario is that one router acts as a Raw Socket server, listening for TCP
connection requests from the other CG FAN routers, which are configured as Raw Socket clients. in
Figure 5-1, for example, the CGR 2010 acts as the Raw sock
et server, and it listens for TCP connection
requests from the WPAN gateways, which are configured as Raw Socket clients.
A Raw Socket client receives streams of serial data from the RTUs and accumula
tes this data in its buffer,
then places the data into packets, based on user-specified packetization criteria. The Raw Socket client
initiates a TCP connection with the Raw Socket server and sends the packetized data across the IP
network to the Raw Socket server, which retrieves the serial data from the packets and sends it to the
serial interface, and on to the utility management system.