Usage Statistics
The Usage Statistics menu shows traffic, resource, and fault metrics for devices and interfaces on a single screen. It aggregates data by day, week, and month, so you can trace the cause of an incident at a specific point in time or decide when to expand a circuit. You can download the screen as a PDF or PNG file for reporting.
This document targets network and infrastructure operators.
This menu replaces the previous Network Bandwidth Usage menu. Bookmarks and links saved with the previous address still work, and they open with the matching device or interface already selected. Chart type and unit settings saved for Private MIB charts also carry over.
Basic screen and settings
The screen consists of the Device selection panel on the left and the statistics area on the right. Set the query conditions in the top option bar, then select a target in the left panel to see its statistics on the right.
| Item | Description |
|---|---|
| Time Selection | Select the query period. Daily, weekly, or monthly |
| Manager Selection | Select the NMS manager that collects the data |
| Aggregation | Select the representative value. Average, maximum, or minimum. Defaults to average |
| Download | Save the current statistics screen as a PDF or PNG file |
The selected period, target, and aggregation method are stored in the address. Bookmark or share the address to reopen the same screen.
Selecting the query period
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In the top option bar, select a period unit from Time Selection.
Every query range ends today. The range counts back from today rather than following calendar weeks or months.
Item Description Length Daily From 00:00 today to 00:00 tomorrow 1 day Weekly From 00:00 six days ago to 00:00 tomorrow 7 days Monthly From 00:00 thirty days ago to 00:00 tomorrow 31 days -
Click the arrow buttons on either side of Time Selection to move to the previous or next period of the same length.
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To change the start date, click the calendar icon and select a date.
Selecting a date changes only the start date and keeps the period length. For example, if you select September 1 while weekly is selected, the query covers September 1 through September 7.
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The maximum query length is 31 days.
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You cannot enter a time directly.
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A period that includes today shows data only up to the current time, and the remaining time slots stay empty.
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Hourly aggregates are created about five minutes after the hour. An empty slot for the hour in progress is expected.
Selecting the aggregation method
In the top option bar, use the Aggregation dropdown to choose how to represent the collected values within each aggregation interval. Select average, maximum, or minimum.
| Item | Description |
|---|---|
| Panels that follow the aggregation setting | Throughput, Port Utilization, CPU, Memory, health check - RTT, health check - Jitter, Private MIB category charts |
| Panels independent of the aggregation setting | Total Throughput (always average), health check Status, Syslog, Trap |
The device summary cards shown for a group always use average aggregation regardless of the setting.
Data aggregation interval
Line charts, grid chart cells, and Syslog and Trap bars all follow the same aggregation interval.
| Item | Description |
|---|---|
| Daily | 1 hour |
| Weekly | 1 day |
| Monthly | 1 day |
A day starts at midnight in the project time zone. For weekly and monthly views, the slot for today is calculated from data up to the current time.
| Item | Description |
|---|---|
Port, Device | The data unit of the chart. Per port or per device |
1 hour · Average | The display interval and aggregation method |
Hover over a tag to see a tooltip. Downloaded files do not include the option bar, so use these tags to check the aggregation method in a PDF or PNG file.
Selecting a target
At the top of the Device selection panel on the left, switch between the Device tab and the Group tab to select a target.
| Item | Description |
|---|---|
| Device tab | Lists devices by name. Expand a device to see its interfaces |
| Group tab | Shows a group tree ordered by location, building, floor, device, and interface |
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The number in parentheses next to a device name is its interface count, measured at the end of the query period. The number next to a group name is the count of its immediate child items.
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Devices that are not assigned to a group appear under
Unassigned device. -
Enter a device, interface, or group name in the search box to find a target. Searching by group name on the Device tab returns the devices in that group.
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On the Group tab, use the Collapse All and Expand All buttons to collapse or expand the whole tree.
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The selected target appears as a path at the top of the screen. Click a parent item in the path to move to that group.
| Item | Description |
|---|---|
| No selection | A list of top-level group cards with the group name, device count, and interface count |
| Group | Summary cards for the devices in the group |
| Device | Detailed device statistics |
| Interface | Detailed interface statistics |
Group statistics
Selecting a group lists summary cards for every device under it. Devices in subgroups appear in the same list, and subgroups do not get their own cards. Click a card to open the detailed statistics for that device.
| Item | Description |
|---|---|
| Device IP, device name, model name | Shown in the upper left of the card |
| Peak Throughput | Shown in the upper right of the card. The maximum throughput of the single busiest port during the query period, combining inbound and outbound. The line below shows the peak time and the matching interface |
bps mini chart | The throughput trend summed across all interfaces on the device. The dotted line is the average, and hovering shows the average value in a tooltip |
| Item | Description | Highlight |
|---|---|---|
PEAK UTILIZATION | Maximum utilization of the busiest port. Hover to see the peak time and port | Yellow at 70% or above, red at 90% or above |
HEALTH | health check availability | Yellow below 100%, red below 95% |
SYSLOG (E/A/C) | Count of Emergency, Alert, and Critical Syslog entries during the query period | Red at one or more |
PEAK CPU | Maximum CPU value, based on the item selected in the CPU panel of the detail screen | Yellow at 70% or above and red at 90% or above, for percent units only |
PEAK MEMORY | Maximum memory value, based on the item selected in the Memory panel of the detail screen | Yellow at 70% or above and red at 90% or above, for percent units only |
The metric names appear in English in every language.
| Item | Description |
|---|---|
- | No data. Covers unregistered OIDs, no health check targets, and no collected data |
... | Loading |
No polling data | A device with no collected data at all. Shown in the upper right of the card |
Peak Throughput in the upper right is based on a single port while the mini chart is based on the sum of all interfaces, so the two values can differ. The height axis of the mini chart differs per card, so do not compare chart heights across cards. Compare peak values instead.
The Download button does not appear on the group screen.
Device and interface statistics
Selecting a device or interface shows detailed statistics. The header shows the page title for the period unit along with the date range, project name, Manager, and target path.
When you select an interface, only the Throughput and Port Utilization panels switch to that interface. The Total Throughput, CPU, Memory, health check, Syslog, and Trap panels stay based on the device that owns the interface.
Interface display options
Use the switches in the upper right to exclude interfaces from the statistics. Both switches are off by default.
| Item | Description |
|---|---|
| Hide Logical Interfaces | Hides logical interfaces such as VLAN and Loopback that are not physical ports |
| Hide Unused Interfaces | Hides interfaces that carried no traffic during the query period |
Both switches apply to the Throughput, Total Throughput, and Port Utilization panels. Hidden interfaces are also excluded from the totals below each panel. However, an interface you select directly is never hidden, even if it matches these conditions.
This setting is stored in the browser and shares its value with the same switches in Device Trend. Downloaded files do not include the switch area.
Throughput
Shows throughput per interface as a line chart, combining inbound and outbound.
When a device is selected
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By default, the chart shows the five interfaces with the highest peak during the query period. If the device has five or fewer interfaces, the chart shows all of them and Select all appears selected.
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Select Top 5, Select all, or Deselect all to change which interfaces appear. The displayed count and the total count appear next to the options.
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Click a legend entry to show or hide that interface.
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Hovering over the chart shows a tooltip for only the line nearest the cursor.
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Click a line in the chart to open the statistics screen for that interface. Clicking a legend entry toggles display instead and does not navigate.
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The statistics below the panel show Avg, Peak, and Peak Time for Inbound, Outbound, and Total. They are calculated from the sum of all interfaces on the device, regardless of which lines are displayed.
When an interface is selected
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The chart shows three lines for that interface. Inbound, Outbound, and Total.
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The Top 5 options and the legend are hidden.
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The statistics below the panel add Peak and Peak Time for Utilization.
Total Peak is calculated after summing values at each point in time, so it differs from the simple sum of per-port peaks. Intervals with no collected data are excluded from the calculation rather than counted as zero.
Total Throughput
Shows the inbound and outbound totals across all interfaces on the device as a stacked area chart. The panel stays based on the whole device even when you select an interface, and it has no statistics below the chart.
This panel always uses the average regardless of the aggregation setting. The tag next to the chart title does not show an aggregation method.
Port Utilization
Shows utilization per interface in a grid. Rows are interfaces and columns are aggregation intervals. Interfaces are sorted by number.
Utilization is the sum of inbound and outbound divided by the link speed. Each cell shows the maximum utilization within that interval as a color, on a scale from 0% to 100% divided into six levels at 2%, 20%, 45%, 70%, and 90%. Hover over a cell to see the interface, time, and utilization in a tooltip.
| Item | Description |
|---|---|
link not up | Medium gray. The link was not up at some point in the interval and utilization was below 2% |
| No data | Light gray. No data was collected during the interval |
The statistics below the panel show Peak, Peak Port, and Peak Time.
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Utilization is based on the sum of both directions, so a full-duplex link with heavy traffic in both directions can exceed 100% and reach up to 200%.
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An interval where the link went down while utilization was high keeps its utilization color instead of turning gray.
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An interface that does not report a link speed still gets a row, but every cell shows No data.
CPU and Memory
The CPU and Memory panels always appear together, regardless of the device configuration. The chart title includes the name of the item on display, for example CPU - cpmCPUTotal1minRev. Table-type OIDs draw one line per index in a single chart, such as one line per CPU core.
The charts show the following two sources.
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Private MIB OIDs registered in the device SNMP Polling settings whose category is CPU or Memory
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Calculated metrics classified as CPU or Memory
If more than one item is available, select an item from the dropdown next to the title. When both OIDs and calculated metrics exist, they are grouped under Polling OID and Calculated Metric. The default is the first item in ascending name order. The selection is stored per device in the browser, and PEAK CPU and PEAK MEMORY on the group cards follow the same selection.
When there is no data to display, the panel shows a message and a button.
| Item | Description |
|---|---|
No polling OID registered for this device. | No OID is registered in that category |
No numeric data collected for the registered OIDs. | Every registered OID collects non-numeric values only |
Click Add OID to open the OID selection window and register an OID from this screen. If the device has no SNMP Polling settings at all, a Configure SNMP Polling button appears instead and opens the SNMP Polling tab for that device in Device Inventory.
The 
icon in the upper right of the chart opens the Chart Setting window rather than OID registration. In this window you can set Chart Type and Unit per OID and review the MIB object information and a preview. Memory defaults to bytes, so change the unit here if the OID collects percent values.
health check - RTT and health check - Jitter
Shows RTT and Jitter as line charts for each health check target registered on the device. Both panels follow the aggregation setting.
Each line represents one target IP. If a single IP has several ICMP or TCP checks, they merge into one line and the name lists the check types, for example 192.168.1.240 (ICMP, TCP:5053). Targets registered by host name appear by host name.
| Item | Description |
|---|---|
| health check - RTT | Hovering shows a tooltip for only the line nearest the cursor |
| health check - Jitter | Hovering shows the values of every line in one tooltip |
The statistics below each panel show Avg, Max, and Max Time. Max and Max Time are based on the values drawn in the chart, while Avg always uses the average regardless of the aggregation setting.
If the device has no registered health check targets, none of the three health check panels appear.
health check Status
Shows the alive and dead state of the health check targets managed by the device in a grid. Rows are targets and columns are aggregation intervals. This panel calculates state ratios regardless of the aggregation setting.
The dead ratio for each cell is calculated differently per period unit.
| Item | Description |
|---|---|
| Daily | The share of dead intervals among the twelve 5-minute intervals in the 1-hour cell |
| Weekly and monthly | The share of dead intervals among the twenty-four 1-hour intervals in the 1-day cell |
A higher dead ratio shows in a redder color. Hover over a cell to see the target, time, and alive or dead ratio in a tooltip.
| Item | Description |
|---|---|
| Alive | Green |
| Dead 10% or below | Yellow |
| Dead 50% or below | Orange |
| Dead above 50% | Red |
| No data | Light gray |
The statistics below the panel show Total, Alive, Dead, and Availability. Total, Alive, and Dead count observed intervals rather than targets, and Availability is Alive divided by Total.
A fault shorter than the aggregation interval may not appear in the ratio. Also, the same target shows very different Total values for daily and weekly views because the interval units differ.
Syslog and Trap
Shows the Syslog count and the Trap count per aggregation interval as bar charts. Both panels count entries regardless of the aggregation setting.
| Item | Description |
|---|---|
| Syslog | Stacked bar chart by severity. Click a legend entry to toggle a severity |
| Trap | Single-color bar chart with no legend |
The Syslog legend lists Emergency, Alert, Critical, Error, Warning, Notice, Info, and Debug, using the same severity classification and colors as the Syslog widget in Device Overview.
Both panels show Total, Peak, and Peak Time below the chart. Peak is the count in the busiest interval.
Private MIB category charts
Below the Trap panel, Private MIB OIDs registered under categories other than CPU and Memory appear as charts, along with calculated metrics in the same classification. This area follows the aggregation setting.
Each registered item gets one chart, rendered one per row at full width. The chart title combines the category and the OID name, for example Error - locIfInCRC. Click the icon in the upper right of a chart to open the Chart Setting window.
The following items do not appear. If no items qualify, the whole area is hidden.
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The interface traffic category (AllInterfaces), which the Throughput panel covers
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OIDs that collect non-numeric values
Downloading the statistics screen
You can save the statistics screen as a file. The button appears only when a device or interface is selected, not when nothing is selected or a group is selected.
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Click the Download button on the right of the top option bar.
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Select a file format from the dropdown.
Item Description PDFSaves the screen as a document. Long content splits across several pages PNGSaves the screen as a single image
The saved file includes the target path, the header information, and every panel, including areas that require scrolling. It excludes the Device selection panel on the left, the top option bar, and the interface display option switches.
The file name follows the usage_report_{start}-{end} format, for example usage_report_2026-09-30_0000-2026-10-01_0000.
If saving fails, a download failure message appears for the file or the image.