Controller Status
Overview
A parent controller may have hundreds of associated subwatches in the form of uplinks, tunnels, performance tests, etc. To limit alert spam, Highlight offers the option to suppress alerts on subwatches if the parent controller is uncontactable. Previously, this meant no alerts were sent if the controller was down. The controller status watch was designed to resolve this issue.
All controllers have a controller status watch created automatically. Alerts configured as 'all watch types' will send stability alerts if the controller is down. Alternatively, a specific alert for controllers only can be created.
For a Controller Status watch, this section shows graphically the availability and health for the selected time period (day, week, month) and date.
Colour coding
When viewed for today only, each section on the Details page gives an indication if it is currently alerting and thus impacting the associated heat tile colour. Find out more about colour coding.
Description
Horizontal axis: Adjusts according to the selected time period to show "hours" in day view and "days" in week and month views; redraws if the time zone is changed at the top right of the Details page. See Zoom options for methods to zoom in on the data.
Time period
Highlight displays the values for each data point in the time period:
Day
Shows multiple data points per hour (one for each polling period, usually one to five minutes)
Week
Shows 24 data points per day (every hour), Maximum for each hour is shown
Month
Shows 6 data points per day (every 4 hours), Maximum for each 4 hour period is shown
For any time period, hover on a point to see date, timestamp and availability status. If hovering on a week or month, there may be multiple availability states in the time period.
Availability
Coloured blips, with the priority and meaning shown below, are drawn on the Availability line.
1
Red blip
Parent controller reported as down or is not contactable
2
Green line
Parent controller is up
3
Grey line
No data
Week/Month: Priority on availability states
For week or month, if more than one availability event occurs during the time span (one hour for a week, 4 hours for a month), then only one blip is shown on the Availability line using the priority shown in the table above.
All availability events for the time span are listed in the tooltip when hovering on a point.
Health
Currently no blips are drawn on the Health line.
One exception is for Extreme Networks Platform ONE. For these controller status watches, a blip is drawn when the API key is near its expiry date. The tooltip shows Alerting: CredentialsExpiring. The default setting is to drawn a red blip starting 14 days before the API key expiry date.
Zoom options
There are two methods to zoom in on charts: drag and click. Find out more about zoom options.
Background colours
Grey backgrounds indicate non-business hours and purple backgrounds indicate maintenance periods. Find out more about background colours.
Location of Controller
From the Details page, hover on the controller icon to view the location of the controller
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