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SAN Director 64 Installation Guide
load balancing
Ability to evenly distribute traffic over multiple interswitch links within a fabric. Load
balancing on a Director occurs automatically.
logical unit number
Also known as LUN. In Fibre Channel addressing, a logical unit number is a number
assigned to a storage device which, in combination with the storage device's node port's
world wide name, represents a unique identifier for a logical device on a storage area
network.
loopback plug
In a fiber optic environment, a type of duplex connector used to wrap the optical output
signal of a device directly to the optical input.
loopback test
Test that checks attachment or control unit circuitry, without checking the mechanism
itself, by returning the output of the mechanism as input.
LUN
See logical unit number.
MAC address
See media access control address.
maintenance port
Connector on the Director where a PC running an ASCII terminal emulator can be
attached or dial-up connection made for specialized maintenance support.
managed product
Hardware product that can be managed with the SDCM. For example, the SAN Director
64 is a managed product. See also device.
management information base
Related set of software objects (variables) containing information about a managed device
and accessed via SNMP from a network management station.
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