User manual

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McDATA Sphereon™ 4500 Fabric Switch Product Manager User Manual
Glossary
loop initialization
primitive
LIP. In an arbitrated loop device, a process by which devices con-
nected to hub ports (H_Ports) on the arbitrated loop device notify
other devices and the switch of the presence in the loop by sending
LIP sequences and subsequent frames through the loop. This process
allows linked arbitrated loop devices to perform fabric loop port
(FL_Port) arbitration as they link through hub ports.
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.
M
MAC address See Media Access Control address.
maintenance port Connector on the switch operator panel 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 EFC Product
Manager. For example, the Sphereon 3216 and Sphereon 3232
Switches are managed products. 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.
management session Management session exists when a user logs on to the EFC Manager.
EFC can support multiple concurrent management sessions. The user
must specify the network address of the EFC Manager’s server at
logon time.
Media Access Control
address
Hardware address of a node (device) connected to a network.
MIB See management information base.