User's Manual
Table Of Contents
- Front Cover 195CM
- Table of Contents 195CM
- Chapter 1 - Introduction 195CM
- Chapter 2 - Starting Out 195CM
- Chapter 3 - Example Applications 195CM
- Chapter 4 - Repeating 195CM
- Chapter 5 - Ethernet Configuration and Applications 195CM
- Chapter 6 - Utilities and Features 195CM
- Chapter 7 - Antenna Setup 195CM
- Apx A - Software Commands 195CM
- Apx B - Interface Ports 195CM
- Apx C - Model 192 Integration 195CM
- Apx D - FCC Information
- Apx E - 195C Specifications
- Apx F - 195M Specifications
CHAPTER 5
ETHERNET APPLICATIONS
Ethernet Bridge Mode
The mode of operation for transfer of Ethernet data over an ESTeem 195C or 195M
wireless network is the Ethernet Bridge Mode. This mode is primarily used to gather
data from remote Ethernet devices such as RTU’s or PLC’s in supervisory control
networks (SCADA). Bridging Ethernet networks with these narrowband wireless
modems will not work.
There are two software commands that need to
be enable to activate the Ethernet bridge mode:
Ethernet Bridge (eth_bridge on/off )– This command will enable or disable the bridge.
ARP Proxy (arpproxy on/off) – This command will instruct the ESTeem 195C/M to use
the Route and Append table to control the Ethernet IP protocol destinations.
Technical Tip: The ESTeem
195C/M do not support Spanning
Tree Protocol (STP) on the
Ethernet bridge so all network
loops will have to be resolved by
network layout.
Technical Tip: The ESTeem
195C/M have a very low
(9,600bps) RF data rate and
can not be used to bridge
large Ethernet networks.
To
control the Ethernet data flow in the wireless network, the Ethernet bridge mode uses the Route and Append tables discussed in
detail in Chapter 4. Not only is the Route and Append tables used for any repeaters in the Ethernet network, it is also used to
define where to find remote IP addresses in the wireless network. Figure 3 below shows an example wireless Ethernet network
layout:
Figure 3: Ethernet Bridge Example
Revised: 4 Feb 14 5-2 EST P/N AA107-195CM