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Making a New Discovery
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To initialize the CWSI discovery process, click the button with the circular arrow, on the left end of the CWSI Campus toolbar Discovery will take a few minutes, depending on the size of your network CWSI uses CDP (Cisco Discovery Protocol) as one of the mechanisms to find Cisco devices CDP runs at layer 2 of the OSI model, and so can discover devices without IP or SNMP installed, such as Cisco switches Figure 8-19 shows an example of the discovery map; in this case, we discovered our local test network All connections, devices, and even interface information are displayed on the map Double-clicking any device will open CiscoView and load the device You can also right-click a device and list its ports and other basic attributes Once you have a topological map with devices, you can use the applications included with CWSI to manage and monitor them
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Figure 8-19: Inventory Manager provides a summary of all devices REMOVING DEVICES FROM THE MAP Once CWSI discovers a device and adds it to the map, it cannot be deleted Currently, you have two other options for removing an object from the discovery map: Delete the lines attached to the object, and then hide the unwanted object in a part of the screen that is not viewed Delete the CWSI database and rediscover the network without the unwanted object The map will then need to be organized and saved NoteIf you want to discover devices more than one router hop away, you must select the Jump Router Boundaries box under Options | Properties | Discovery
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The applications included with CWSI are listed in Table 8-3 Most of these are really separate applications and are simply launched from within CWSI and use the Cisco- Works2000 database of devices In any event, it's easy to use them because they're all centrally located in this fashion Table 8-3: CWSI Applications
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The CWSI Campus map provides a logical view of devices and links in your network You can also view the topology of your virtual LAN (VLAN) configuration in relation to the physical topology VLANDirector is a configuration and management tool that enables you to display, modify, and manage VLANs You can also generate reports on VLAN status and membership This tool tracks end-user information for VLAN updates For example, if a user's workstation is moved and plugged into another port, UserTracking provides MAC information so that the device can remain on the original VLAN without manual reconfiguration CiscoView, covered in detail earlier in the chapter, displays a graphical representation of a device and allows you to configure and monitor device chassis, port, and interface information TrafficDirector, described in 10, provides RMON and application-usage monitoring for quicker troubleshooting of network performance problems ATMDirector is essential for Cisco networks with ATM switches This application discovers ATM switches, physical links, and permanent and switched virtual circuits It provides performance monitoring and traffic analysis of RMON-enabled ATM links
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UserTracking
CiscoView
TrafficDirector
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NTManage
NTManage by LANWARE (wwwlanwarenet) is a network management and troubleshooting application that runs on Windows NT Workstation and Server Like CWSI, NTManage has an autodiscovery feature that, given a seed router, searches your network and creates a topological map of it NTManage has real-time reporting functions so that fault detection and device management are easy and quick
Installing and Configuring NTManage
Installation of NTManage is simple and straightforward; just be sure you have the SNMP service already running This is accomplished through the Control Panel Open the Network icon, click the Services tab, and select SNMP Agent The system must be rebooted for the SNMP agent to take effect After that, your NT system is capable of sending SNMP alerts to an SNMP Manager (such as HP OpenView) or can be queried by an SNMP Manager to divulge information about the condition of the computer Once the program has started, you'll be asked to create a new network topology map Again, this is a logical view of the devices on your network Unless you have a very small network (fewer than ten devices), you'll probably elect to use the auto-discovery feature: You provide a range of IP numbers that matches the range in use by your devices, and NTManage sequentially cycles through the numbers, querying each for information Figure 8-20 shows the resulting topological map for a test network created for NTManage to discover All devices on this test network were successfully discovered, including the printer server and non-NT devices such as the UNIX system and the router
Figure 8-20: NTManage automatically discovers network devices The left pane of NTManage's window shows a list of devices and an icon indicating the device's current state (up or down) You can see by the direction of the arrow on the icon for the UNIX server (10255499) that it is down Also, in the right-hand pane, all devices that need attention have a large red box as a background And, as you'll see, NTManage can go far beyond this map in its ability to tell an administrator that a problem has developed Although the auto-discovery function works well for learning the fundamental information about network devices, none of the devices that are initially discovered are automatically connected to one another The user has to manually select two devices at a time and join them via the menu Another related drawback: although the auto-discovery will learn of all the network devices, to make NTManage useful you may have to select each device and provide more information about it In the example in Figure 8-20, we wanted to indicate which computer was the DNS server, which was the Web server, and so on In a large network, keeping the topological map current can consume a good measure of time and resources
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