AP Uptime/Downtime

The Analytics AP Uptime/Downtime Screen displays detailed information about the Uptime/Downtime of Stellar APs, and the Uptime/Downtime of the link between APs and OmniVista. By default, Average AP/Link Uptime information is displayed. Click on the AP Uptime/Downtime button to view Stellar AP Uptime/Downtime information. Click on the Average AP/Link Uptime button to return to the default view.

The AP Uptime/Downtime information is based on either on the Last Registration Time for the AP (Network - AP Registration - Access Points - Last Registration Time) or the "Last Up Time" received from alaOVSwitchUp/alaOVSwitchDown traps (Network - Notifications - Notifications Home). The Average AP/Link Uptime Report is based on the total AP down time value in the AP Uptime/Downtime Report for AP Power Down and AP Link Down.

By default, information for all APs for the last 30 days is displayed (up to 5,000 records). If there are more than 5,000 records on the OmniVista Server, you will be prompted to download the records from the server as a .csv file.

AP Uptime/Downtime Logic

If an AP becomes unreachable from OmniVista at time t0, then goes down in the network at time t1, then comes up in the network at t2, then becomes reachable to OmniVista at t3; OmniVista will report that the AP was down in the network from t0 to t2, and that the AP has been Up in the network since t2 (Up between t2 to t3). OmniVista will not be able to report the fact that the AP was up in the network from t0 to t1, as the AP was unreachable. 

For the same reason, if an AP goes up and down multiple times between t0 and t2, OmniVista will not be able to detect and report these incidents. When the AP becomes reachable at t3, OmniVista will detect that the AP has been up in the network since the sysUpTime value reported by the AP. All other incidents during the time the AP was unreachable will be unknown to OmniVista and OmniVista will assume that the AP was down from the time it became unreachable until the most recent sysUpTime value reported by the AP when it became reachable.

AP Uptime/Downtime Table

• Date - The date and time the AP was last "Up" prior to the most recent time the AP went "Down".
• AP Name - The user-configured name for the AP.
• Time When AP Went Down - The date and time the AP went down.
• Total AP Uptime Until This Event - The total amount of time the AP was "Up" before going "Down".
• Time When AP Was Restored - The date and time the AP was restored to "Up" status.
• Link Down - The current link status for the link between the AP and OmniVista. This field indicates whether or not the AP link to OmniVista is currently "Up" (Yes) or "Down" (No). If the link is "Down", OmniVista cannot communicate with the AP, but the AP can communicate with clients.
  
• AP Power Down - The current AP power status. This field indicates whether or not the AP is currently "Up" (Yes) or "Down" (No). If an AP is "Down" (e.g., powered down, rebooting), the AP cannot communicate with OmniVista or clients.

Average AP/Link Uptime Table

• AP Name - The user-configured name for the AP.
• Average AP Uptime - The percentage of time when the AP was "Up".
• Average Link Uptime - The percentage of time when the link between the AP and OmniVista link was "Up".

Filtering the Display

By default, the most recent data from all maps and devices, however, you can filter the display to display date from specific maps/devices for different time periods. Select one or more options from the "Filters" drop-down menus and select search criteria.

• Filter By - Select which devices you want to view.
  • All - Select "All" to display configured traps from all network devices.
  • Map - Select "Map" and select a map to display traps from only the devices contained in the selected map.
  • Device - Select "Device", select Switch Picker or Topology App in the "Select Using" drop-down, then click EDIT in the "Devices Selected" field to view traps from specific devices. You can also select "Quick Select" and select a device(s) from the drop-down menu.
• Time Range - By default, the most data is displayed (Most Recent). To display data from a specific time range, select the "Custom" radio button and enter the time range.