The Top Least Reachable Servers view lets you determine which servers have been powered on but unreachable during a selected time frame. A server can be unreachable due to a fault in the network path to the server. For example, the switch port connecting the server was down, or the WAN connection to the site where the server is located was down. The server can also be unreachable because it has become unresponsive. Or new security protocols that have been implemented are blocking ping tests to the server from a CA data source.
The Top Least Reachable Servers view displays reachability percentages for the indicated servers during the selected time period. By default, the view shows the 10 servers with the greatest amount of connectivity-related downtime (the lowest average reachability).
Click the name of an item to see more data from that item.
By default, the Top Least Reachable Servers view includes the following information:
Identifies the managed item that is associated with the performance data. If an administrator defined an alias for the device item, the alias is displayed. Otherwise, the discovered device name is displayed.
Reports the percentage of attempts that the device was reachable—a ping response was received from the device during each polling interval—divided by all attempts during the selected time period. For each polling interval, the reachability is one of the following values:
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