Switch Connection Table
One of data sets the program can retrieve from a switch over SNMP is connection table. With this table, you can quickly find out, which hosts take a certain port on the switch, resolve their MAC and IP addresses. The major advantage of this function is that it can simultaneously retrieve connection tables from several switches defined in the field Switches (Fig. 1). Moreover, the retrieved table can be exported to a CSV file and then opened in Microsoft Excel.
Fig. 1: The Switch Connection Table window.
The function is available in LANState Pro only. To call the function, select the item SNMP | Switch Connection Table on the main menu. The program will automatically generate the list of switches on the active network map. If no community parameters were specified in the in the switch properties window earlier, you will have to specify them at this moment by selecting each record in the Switches field and then clicking on the Edit button. The default community value set by switch manufacturers is normally public. After the list of switches to be polled is generated (only switches that are ticked off will be polled), click on the Detect button and wait for a few moments (depends on many factors; normally it takes 3 to 10 seconds to process one switch). If the table has been generated successfully, you will see it. Next, the table can be saved as a CSV file and opened in Excel.
Other SNMP functions: