Abstract: An electronic enclosure includes a chassis with a fan base and a fan module. The fan base and fan module are disposed so that the fan module may installed in the fan base in a first configuration to provide front-to-rear air flow within the enclosure, or the fan module may be detached from the fan base, turned and reinserted into the fan base in a second configuration to provide rear-to-front air flow within the enclosure. The fan base is provided with two power connectors, one of which mates with the fan module in the first configuration and the second one of which mates with the fan module in the second configuration.

Abstract: A system may comprise a network diagnostic device. The network diagnostic device may be configured to instantiate objects of data collection classes. The data collection classes may be configured to collect data from nodes of a network. The data collection classes may, for instance, inherit an interface object from an ancestor data collection class, and the interface object may be configured to use a protocol to collect data from nodes of a network. The network diagnostic device may be configured to automatically detect a node type associated with a node of a network. The network diagnostic device may also be configured to instantiate a node-specific data collection object associated with the detected node type. The node-specific data collection object may be configured to collect data from nodes of the detected node type at intervals less than or equal to fifteen seconds.

Abstract: A computing device is configured to display a user interface. The user interface is configured to create a filter configured to be applied to network diagnostic statistics prior to aggregation of the network diagnostic statistics. The filter includes at least one device data limitation and at least one performance data limitation.

Abstract: A network diagnostic system may include a network diagnostic device. The network diagnostic device may be configured to receive data indicating a light level of an optical signal and to perform at least one network diagnostic function at least partially in response to the receipt of the data. A network diagnostic method may include detecting a light level of an optical signal; and performing at least one network diagnostic function at least partially in response to the detection of the light level of the optical signal. Exemplary network diagnostic functions may include triggering an alarm; triggering a capture of at least a portion of one or more network messages; storing data indicating the light level of the optical signal on a computer readable medium (e.g., for use in subsequent reports); and/or any other suitable network diagnostic function.