Observer Analyzer : Observer Analyzer : Network and Application Discovery : Discovery : Discovering which devices are connected to a switch
Discovering which devices are connected to a switch
Use the Switch Station Locator tool to show the MAC addresses of devices connected to switches on the network; in this way, you can determine which stations are connected to a network switch.
Prerequisite(s):  
Classic mode must be enabled.
 
Prerequisite: Observer Suite
This tool strictly uses SNMP queries to function, and requires an Observer Suite license.
This tool is well-suited for responding to complaints about network slowdowns, as you can use the Switch Station Locator to immediately narrow down the problem to a particular switch. You can then query the switch to find out if a particular port is generating a lot of errors. This in turn might cause you to be suspicious of a server connected to that port, in which case you can retrieve the server's SNMP statistics to see if there is a problem with that system.
Note: During step 3, you can optionally associate your new switch with a probe instance, allowing the Switch Station Locator tool to use its corresponding address book. Do this by choosing a probe instance from the list. See Building and saving an address book for more information about address books in general.
 
Figure 11: Creating a new switch
 
1. On the Classic tab, in the Tools group, click Switch Station Locator.
2. Do one of the following:
If your switch station list is empty—click New Switch, and proceed directly to step 3 of these instructions.
If your switch station list is populated—proceed directly to step 5 of these instructions.
3. Type the details of your switch, or choose an existing SNMP device.
4. Click OK to save your new switch.
5. Double-click the switch you want to query.
The tool polls the switch and populates the list with connected stations.
6. Click the Settings button. If you want all seen stations to be indefinitely remembered, choose that option.
Otherwise, if you only want currently connected stations to appear in the list (default behavior) keep that option enabled.
7. Save your populated list by click File and Save > Save Data.