HP StorageWorks 2/16 - SAN Switch User Manual page 66

Glossary
Isolated E_Port
An E_Port that is online but not operational due to overlapping domain IDs or nonidentical
parameters (such as E_D_TOVs). See also E_Port.
IU
Information Unit; a set of information as defined by either upper-level process protocol
definition or upper-level protocol mapping.
K28.5
A special 10-bit character used to indicate the beginning of a transmission word that
performs Fibre Channel control and signaling functions. The first seven bits of the
character are the comma pattern. See also Comma.
L_Port
Loop 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:
Fabric mode Connected to a port that is not loop capable, and using fabric protocol.
Loop mode In an arbitrated loop and using loop protocol. An L_Port in loop mode can
also be in participating mode or non-participating mode.
See also Non-participating Mode, Participating Mode.
Latency
The period of time required to transmit a frame, from the time it is sent until it arrives.
Link Services
A protocol for link-related actions.
Link
As applies to Fibre Channel, a physical connection between two ports, consisting of both
transmit and receive fibres. See also Circuit.
LIP
Loop Initialization Primitive; the signal used to begin initialization in a loop. Indicates
either loop failure or resetting of a node.
LIS_HOLD_TIME
Loop Initialization Sequence Hold Time. The maximum period of time for a node to
forward a loop initialization sequence.
LM_TOV
Loop Master Time-out Value; the minimum time that the loop master waits for a loop
initialization sequence to return.
Login BB_Credit
The number of receive buffers a receiving L_Port has available when a circuit is first
established. Communicated through PLOGI, PDISC link services, or FLOGI.
66 Quickloop Fabric Assist User Guide