Glossary

Offline—when the director is set offline, all ports are set offline. The director transmits the offline sequence (OLS) to attached devices, and the devices cannot log in to the director.

operating state (port)

Valid states include Online, Offline, Testing, Beaconing, Invalid Attachment, Link Incident, No Light, Not Operational, Port Failure, Segmented E_Port.

operating status (Director)

The operating status depends on hardware component failures, which are indicated by alert symbols that display in HAFM application views.

Open Systems Management server

An optional feature that can be enabled on the director or switch through the Product Manager application. When enabled, host control and management of the director or switch are provided through an open systems interconnection (OSI) device attached to a director or switch port.

optical cable

Fiber, multiple fibers, or a fiber bundle in a structure built to meet optical, mechanical, and environmental specifications. See also jumper cable, optical cable assembly, and trunk cable.

optical cable assembly

Optical cable that is connector-terminated. See also jumper cable and optical cable.

optical fiber connector

Hardware component that transfers optical power between two optical fibers or bundles and is designed to be repeatedly connected and disconnected.

out-of-band management

Transmission of management information using frequencies or channels other than those routinely used for information transfer.

packet

Logical unit of information (usually in the form of a data frame) transmitted on a network. It contains a header (with all relevant addressing and timing information), the actual data, and a trailer (which contains the error checking function, usually in the form of a cyclic redundancy check).

password

Unique string of characters known to the computer system and to a user who must specify it to gain full or limited access to a system and to the information stored within it.

path

In a network, any route between any two ports.