Check Command: check_ping ========================= Service Parameters ------------------ check_ping requires two parameters: Warn Critical Each is a group of one integer (response time) followed by a comma and a percentage (packet loss). In this example, we'll warn when the round trip average is 10ms or higher, or the packet loss is 2% or more. We'll go critical if the round trip average is 20ms or higher, or the packet loss is 5% or more. .. code-block:: console 10,2% 20,5%