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Description
This short test drive demonstrates but a few of Observer's most powerful features; it is by no means an exhaustive treatment of all that Observer can do for you. For more comprehensive instructions on how to use Observer, refer to the help system or user guide. Everything described in this document can be done with the standard Observer product. Additional 15- minute Test Drives are available which describe some of the more advanced features of Expert Obser
Transcript
  This short test drive demonstrates but a few of Observer's most powerful features; it is by no means an exhaustive treatment of all that Observer can do for you. For more comprehensive instructions on how to use Observer, refer to the help system or user guide.  Everything described in this document can be done with the standard Observer product. Additional 15-minute Test Drives are available which describe some of the more advanced features of Expert Observer and Observer Suite. How do I get started? Starting the program    If you are a licensed user, start the program as you usually do. If you would like to run in demo mode as user, from the Windows Start  menu, choose Run . Enter   C:\Observer Files\Observer.exe -demo , th    If you are an unlicensed user, you can choose from one of two demo modes. From the Windows Start  me Observer  from the Observer program group. The Observer splash screen is displayed:   For the evaluation described in this document, it's best to choose the Simulation Demo .   The Time Limited FuncDemo has the following characteristics:    Packet Capture/Decode is limited to 250 packets per capture (you may run as many captures as you wish)    Statistics modes run for one minute and then stop. You can press again to run for another minute times as you like. These limitations make the Time Limited demo primarily useful for verifying that your hardware is compatible with After you click Simulation Demo , the program prompts you for the type of simulation you want to run: This document focuses on Ethernet. Other evaluation guides are available for WAN, Token Ring, FDDI, and WirelesAfter you click OK , the Observer main window is displayed. Mapping your network Before Observer can tell you much about your network (especially on the station level), it needs to build a table of on your network, mapping their MAC addresses to meaningful aliases. To map aliases, simply click Tools  -> Discover Network   Names  to open the Discover Network Names window:   Select the discovery method. The choices are IP, IPX (Novell) or Msft (Microsoft login name). In this example, we'vIP. Click . If this is the first time you've run Discover Network Names, you will be prompted for a range of IP Observer scans your network for MAC addresses, displaying the devices as it finds them In the example shown here, we have chosen IP addresses as the discovery method, which can be resolved to their by clicking the Resolve IP button. You can also Add... , Delete...  or Edit... aliases in the list by clicking the approprClick the Save Aliases  button so that the other modes will have access to the network device list. How much bandwidth am I using on my network? Bandwidth Utilization mode lets you easily see how much bandwidth your network traffic is consuming. Starting the Mode To check bandwidth usage, choose Statistics->Bandwidth Utilization from the Observer main menu. You need the start button; the mode starts automatically:    Interpreting the Display Bandwidth Utilization is calculated by recording the number of bytes seen by the Observer (or Probe) station. By rumode at different times under typical network load, you can get an idea of what normal utilization is for your netKnowing what is normal for your   network is key to understanding any analyzer statistical modes and putting them iOnce you understand and recognize what is normal for your network, you can easily spot the anomalies if and wheoccur. How can I find which stations are using the most bandwidth? Observer's Top Talkers mode lets you see who is using the most network bandwidth, which can show whether a pauser, station, or application is consuming excessive network bandwidth. View LAN use patterns, detect faulty netwhardware, and determine what percentage of the network's bandwidth potential each system is using, all from one comprehensive window. Starting the Mode Click Statistics  -> Top Talkers . As with the other modes, click to begin analysis Interpreting the Display The figure above shows the graph display. To immediately identify the stations using the most bandwidth, sort by which is done by clicking on that column heading. You can determine whether systems generating the most traffic (which probably means everything is OK) or user workstations (which could indicate a hardware problem or unauth
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