Using the Engineering Page › Use Availability Reports

Use Availability Reports

The management console defines application availability as observed successful TCP transactions during time slices or a response to a request to the application port on the server. The management console gathers information at the application port level at 5-minute intervals.

The management console questions availability if one of the following conditions is true during an observed 5-minute interval:

• Fewer than 10 observations
• Greater than 10% refused sessions

If necessary, the management console checks availability by performing these steps:

1. Tests the application by attempting to connect on the defined application port. For applications defined by a port range, the management console tries connecting on the first eight ports in the range.
2. If the management console receives no response from the application, the application is rated Unavailable.
3. Optionally, the management console pings the server to verify its status.
   • If the server acknowledges the ping request, the management console considers the server available.
   • If the server does not acknowledge the ping request, the management console considers the server unavailable.
4. If the application or server is unavailable, the management console opens a server incident.

These two scenarios point to different problems:

• An application is not running, but the server that hosts it is running.
• The TCP port is locked only for this application, such as port 80 for Web.