Table of Contents
The Interfaces tab provides a tabular, sortable view of the values for the most recent minute, of the important interface counters (Utilization(%), Unicasts/s, Broadcasts/s, Multicasts/s, Errors/s, Discards/s) for the currently selected switch. This tab is useful for comparing the usage of interfaces based on absolute values. For example to compare the utilization of all 100Mb/s interfaces on the selected switch, first click with the on the column heading for the ifSpeed column, then use Shift- mouse button on the Utilization(%) column heading; this will cause the table to be sorted by ifSpeed and then Utilization.
![[Note]](img/note.png) |
Note |
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When sorting on the Interface column, if the interface naming policy is ifIndex, then the interfaces will be sorted numerically, for all other interface naming policies, the interfaces will be sorted alpha-numerically (see Section 6.2.1, “Setting the switch and interface naming policy”). |
The Progress indicator shows when the counter values will next be updated. When sFlowTrend-Pro first starts collecting sFlow data from a switch, the first counter values will be available after 2 minutes. The counter values will then be updated every minute.
To investigate the cause of the usage values for an interface of
interest, click on the chart
button in the row for the interface. This will
automatically make the
Charts tab visible with
the interface of interest selected.
To view interface counter 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 6.1, “Configuring switches 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 6.2.1, “Setting the switch and interface naming policy”).
Switches shown in italics in the selection list are
disabled, meaning that data is not being stored for these
switches. If the currently selected switch is enabled, click
the
button to disable this switch. If the currently selected
switch is disabled, click the
button to enable this switch. Multiple switches can be
enabled in sFlowTrend-Pro
, whilst sFlowTrend allows
one switch to be enabled at a time. Changing the switch
selection causes interface counters for the newly selected
switch to be displayed.