This trap will be sent any time the status of a logical adapter changes to disconnected. If this server is powered off, booting, or shutting down, occasional connectivity alerts may occur as the network adapter negotiates with the destination device. These alerts can be ignored and should clear automatically. If this server is booted up and running an operating system, this alert can be caused by loss of connectivity due to a cable being removed, a hub, switch, or interconnect port being disabled or going bad, or an error in configuration of either the OS or the destination device such as interconnect ,blade, switch etc . Check the physical connection from the server to its destination device, including any cables. Also check the configuration of the operating system and destination device. Note that for redundant network connections, this alert will be sent only if connectivity is lost on all individual connections.