IBM TotalStorage 3534-F08, Руководство по установке

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link. As applies to fibre channel, a physical connection
between two ports, consisting of both transmit and
receive fibers. See also circuit.
link services. A protocol for link-related actions.
LIP. See loop initialization primitive.
LM_TOV. See loop master timeout value.
local area network (LAN). A computer network
located on a user’s premises within a limited
geographical area. (T)
long wavelength (LWL). A type of fiber optic cabling
that is based on 1300 mm lasers and supports link
speeds of 1.0625 Gbps. May also refer to the type of
GBIC or SFP. See also short wavelength.
loop. A configuration of devices (for example, JBODs)
connected to the fabric by way of an FL_port interface
card.
loop failure. Loss of signal within a loop for any
period of time, or loss of synchronization for longer than
the timeout value.
loop_ID. A hex value representing one of the 127
possible AL_PA values in an arbitrated loop.
loop initialization. The logical procedure used by an
L_port to discover its environment. Can be used to
assign AL_PA addresses, detect loop failure, or reset a
node.
loop initialization primitive (LIP). The signal used to
begin initialization in a loop. Indicates either loop failure
or resetting of a node.
looplet. A set of devices connected in a loop to a port
that is a member of another loop.
loop master timeout value (LM_TOV). The minimum
time that the loop master waits for a loop initialization
sequence to return.
L_port. See loop port.
loop port (L_port). A node port (NL_port) or fabric
port (FL_port) that has arbitrated loop capabilities. An
L_port can be in one of two modes:
v
Fabric mode, connected to a port that is not loop
capable, and using fabric protocol.
v Loop mode, in an arbitrated loop and using loop
protocol. An L_port in loop mode can also be in
participating mode or nonparticipating mode.
See also non-participating mode, participating mode.
loop port state machine (LPSM). The logical entity
that performs arbitrated loop protocols and defines the
behavior of L_ports when they require access to an
arbitrated loop.
LPSM. See loop port state machine.
LSA. Link state acknowledgement.
LSR. Link state record.
LSU. Link state update.
LUN. Logical unit number.
LWL. See long wavelength.
MAC. Media access controller.
management information base (MIB). An SNMP
structure to help with device management, providing
configuration and device information.
MAP. Maintenance action plan.
master port. As relates to trunking, the port that
determines the routing paths for all traffic flowing
through the trunking group. One of the ports in the first
ISL in the trunking group is designated as the master
port for that group. See also ISL Trunking.
MIB. See management information base.
multicast. The transmission of data from a single
source to multiple specified N_ports (as opposed to all
the ports on the network). See also broadcast, unicast.
multimode. A fiber optic cabling specification that
allows up to 500 m (1640.5 ft) between devices.
name server. Frequently used to indicate Simple
Name Server. See also simple name server.
NL_port. See node loop port.
node. A fibre-channel device that contains an N_port
or NL_port.
node loop port (NL_port). A node port that is loop
capable. Used to connect an equipment port to the
fabric in a loop configuration through an FL_port.
node name. The unique identifier for a node,
communicated during login and port discovery.
node port (N_port). A node port that is not loop
capable. Used to connect an equipment port to the
fabric.
non-participating mode. A mode in which an L_port
in a loop is inactive and cannot arbitrate or send
frames, but can retransmit any received transmissions.
This mode is entered if there are more than 127 devices
in a loop and an AL_PA cannot be acquired. See also
participating mode.
N_port. See node port.
NVRAM. Nonvolatile RAM.
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SAN Fibre Channel Switch: 3534 Model F08 Installation Guide