Electronic Systems Technology ESTEEM195ES Wireless Ethernet Radio Modem User Manual Chapter 1 Introduction
Electronic Systems Technology Wireless Ethernet Radio Modem Chapter 1 Introduction
Contents
Users Manual Chapter 1
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| Document ID | 800803 |
| Application ID | G0Q9gppsR66VzpZSuz401g== |
| Document Description | Users Manual Chapter 1 |
| Short Term Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 55.49kB (693593 bits) |
| Date Submitted | 2007-06-06 00:00:00 |
| Date Available | 2007-06-06 00:00:00 |
| Creation Date | 2007-04-09 08:55:02 |
| Producing Software | Acrobat Distiller 5.0.5 (Windows) |
| Document Lastmod | 2007-04-09 08:55:02 |
| Document Title | Microsoft Word - Chapter 1 - Introduction.doc |
| Document Creator | PScript5.dll Version 5.2 |
| Document Author: | Marske |
CHAPTER 1 INTRODUCTION BEFORE YOU BEGIN Thank you and congratulations on your purchase of the ESTeem Model 195Es Wireless Ethernet Radio Modem! This manual was written to help both the first time and advanced user of the 195Es configure the radio modem for your application. If this your first time configuring the 195Es and you would like to get going as soon as possible, we recommend using the 195Es Quick Start Guide provided with the modem. A copy of the guide is listed in the appendix of this manual for your reference. The ESTeem 195Es is a very versatile wireless networking device for both serial and Ethernet applications. To keep the manual usably short, many of the application descriptions and programming details assume the user has a good working knowledge of the following network concepts: • • • • • • • • General Ethernet networking and the configuration of LAN topologies Common Ethernet terminology and acronyms TCP/IP network protocol structure and how to configure TCP/IP networks and subnets How to identify and set the TCP/IP address on your computer Have administrator privileges to the computer and network you are configuring If using routing protocols, you must be able to identify and configure the network routers, gateways and firewalls You must be familiar with using web browser software such as Internet Explorer, Netscape or Mozilla Serial port requirements for the attached device If you are unfamiliar with any of the above networking concepts, you may need to contact your network administrator for assistance. MODEL 195Es OVERVIEW The ESTeem Model 195Es is a wireless LAN transceiver that can be used to build a Wireless Local Area Network (WLAN) for line-of-sight distances to 10 miles at an RF data rate of 200 Kbps. The Model 195Es is a very sophisticated networking device that can be configured for multiple modes of operation depending upon the needs of the wireless and wired LAN system. The following configuration modes are provided as an overview of the basic network types, as all possible network configurations can not be listed. For further help in selecting the correct network type, please contact Customer Support at 509735-9092. Figure 1- Access Point Bridge Diagram Revised: 9 Apr 07 1-1 EST P/N AA107S CHAPTER 1 INTRODUCTION MODEL 195Es CONFIGURATION MODES The Model 195Es can be configured for multiple modes of operation without any changes to the hardware: Access Point Modes 1. Access Point Bridge Mode. When the Model 195Es is configured as an Access Point it will provide a wireless bridge between hardwired Local Area Network (LAN) networks or individual devices and simultaneously create a wireless canopy for the Model 195Es modems in client mode. Multiple Access Point Bridge modems can be physically connected to the same network (LAN) or through a radio link using the Access Point Repeater mode to provide overlapping, seamless Ethernet Figure 2 – Repeater Mode Diagram communication for mobile devices. The ESTeem Model 195Es in Access Point Bridge mode will pass all network traffic between connected devices including global network broadcasts. See Figure 1. 2. Access Point Router Mode. In this mode the ESTeem Model 195Es will function as a router between the wired Ethernet network (connect to the 195Es’ Ethernet port) and the wireless network 195Es’ in repeater peer mode. As in all standard router configurations, the wireless and wired Ethernet networks will need to be on separate subnets. To communicate from the wired Ethernet network to devices on the wireless network, a separate router (in addition to the Model 195Es) is required. The 195Es in Access Point Router mode will pass network traffic for connected devices but will block global network broadcasts from the wired network. This mode of operation should be used instead of the Access Point Bridge mode when a separation between networks is required or the ESTeem is connected to larger LAN Networks that will continuously send global network broadcasts (Figure 2). 3. Access Point Masquerade Mode. The Access Point Masquerade mode is a special use of the Access Point mode where the Model 195Es will connect clients into a single static IP address on a wired network. Data requests from the wireless network will be processed through the Access Point Masquerade 195Es, but any request from the wired Ethernet network to devices on the wireless network will be rejected similar to the operation of a “firewall”. The 195Es will hide all the IP addresses connected on the wireless link. You should use this mode of Figure 3- Access Point Masquerade Diagram Revised: 9 Apr 07 1-2 EST P/N AA107S CHAPTER 1 INTRODUCTION operation if Model 195Es is connected directly to the Internet with a static IP address (DSL, T1, etc.) and you want the wireless clients to access the information through the Model 195Es (Figure 3). This mode should also be used for attaching the Model 195Es to a network where few IP addresses are available or a firewall for the wireless clients is required. 4. Access Point Repeater. The Access Point Repeater is a unique feature available the ESTeem Model 195Es. The Access Point Repeater can be used with any of the above Access Point modes. With this repeater feature enabled, the Model 195Es Access Points do not have to be hardwired together on the same physical LAN to provide seamless Ethernet communication for roaming 195Eg clients. In addition to greatly extending the Access Point canopy range, the Model 195Es will also bridge any Ethernet device or Ethernet network connected to the unit over this same wireless Ethernet network. This mode gives the user the features of a point to multi-point bridge network but also allows Model 195Es in the Client mode to simultaneously roam under the network canopy. 5. Self-Healing Mesh Network. If multiple Access Point Repeater routes are configured to the same destination ESTeem, the 195Es will create a “self-healing” mesh network by automatically re-routing data through alternate paths to reach its destination if the primary path is inoperable. The routing and priority of alternate paths is completely user configurable. See Figure 4. Station (Client) Modes Access Point/Repeater Access Point/Repeater Access Point/Repeater Access Point/Repeater Access Point/Repeater Remote Site Remote Site Remote Site Remote Site Client Mode Vehicles Access Point/Repeater Access Point/Repeater Access Point/Repeater Remote Site Remote Office Remote Site Access Point/Repeater Remote Site Access Point/Repeater Access Point/Repeater Access Point/Repeater Remote Site Remote Site Remote Site Main Office Figure 4 – Mesh Network Diagram 6. EtherStation Mode. When the 195Es is configured in the EtherStation Mode and attached to a single Ethernet Device, the Model 195Es seamless roam under the radio canopy of Access Point and can provide greatly increased range for mobile Ethernet devices such as vehicles, forklifts, cranes, etc (Figures 1-3). 7. Station Router Mode. The Station Router mode will also function as a mobile client, similar to EtherStation, but will allow multiple Ethernet devices to be connected to a single 195Es (Figure 3). The 195Es will function as a router between the wireless client mode and the wired Ethernet devices connected to the Ethernet port. Similar in configuration to the Access Point Router mode, the wireless and wired Ethernet networks will need to be on separate subnets. To communicate from wireless network to devices on the wired Station Router network, a separate router (connected to the Ethernet side of the Access Point) is required. This mode would be used where multiple Ethernet devices will be connected to a single Model Revised: 9 Apr 07 1-3 EST P/N AA107S CHAPTER 1 INTRODUCTION 195Es in a mobile client application and the connected Ethernet devices will need to be accessible from the Access Point’s LAN network. 8. Station Masquerade Mode. The Station Masquerade Mode is another mode where multiple devices will be connected to a single ESTeem in a mobile or Client application, but unlike the Station Router mode, the Station Masquerate will consolidate all connected Ethernet devices to a single IP address on the network. The devices connected to the Station Masquerade 195Es will be able to access information from both the wireless and wired LAN, but will be inaccessible the other way similar in application to a firewall. This mode would be used where multiple Ethernet devices will be connected to a single Model 195Es in a mobile application and the IP addresses for each device will be hidden from the LAN connected to the Access Point. See Figure 3. To begin setup of your wireless Ethernet network you must first configure the Model 195Es for the mode desired. Chapter 2 will show several examples of the different modes of operation to help select the correct mode for your application. Revised: 9 Apr 07 1-4 EST P/N AA107S
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