4.6. Selecting a switch

To view data for a specific switch, use the Switch selector in the control bar to select the switch you are interested in. The Switch selector lists the switches that have been included in the sFlowTrend-Pro configuration, or that sFlowTrend-Pro is receiving sFlow data from (see Section 13.3, “Configuring agents in sFlowTrend-Pro for details on configuring switches in sFlowTrend-Pro). A switch is listed using its SNMP IP address, sFlow agent address, DNS Name, or sysName (see Section 13.1.1, “Setting the switch and interface naming policy”).

In the Top N and Circles tabs, the Switch selector also includes an option All switches. When you select All switches, the resulting charts display the overall traffic through the network, such that, if traffic crosses multiple switches, the traffic is counted only once. If you would like to restrict the analysis to specific switches, you can do so by using a filter, for example: agent == "" || agent = "", where and are the sFlow agent addresses of the switches that you are interested in (see Section 4.3.6, “Filtering for specific traffic” for more information of filtering). The All switches option is not available in the Interfaces or Counters tabs, since interface counters are specific to a specific switch and interface.

Switches shown in italics in the selection list are disabled, meaning that data is not being stored for these switches. See Section 13.3, “Configuring agents in sFlowTrend-Pro for help on enabling and disabling switches. Multiple switches can be enabled in sFlowTrend-Pro, whilst sFlowTrend allows five switches to be enabled at a time.