HP StorageWorks 2/64 - Core Switch Installation Manual page 156

hard address The AL_PA that an NL_Port attempts to acquire during loop initialization.
idle Continuous transmission of an ordered set over a Fibre Channel link when no data
is being transmitted, to keep the link active and maintain bit, byte, and word
synchronization.
integrated fabric The fabric created by connecting multiple HP switches with multiple ISL cables, and
configuring the switches to handle traffic as a seamless group.
ISL trunking The distribution of traffic over the combined bandwidth of multiple ISLs. A set of
trunked ISLs is called a trunking group, and the ports in a trunking group are called
trunking ports.
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).
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.
kernel flash Flash (temporary) memory connected to the peripheral bus of the processor, and
visible within the processor's memory space. Also known as user flash.
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: F 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.
latency The period of time required to transmit a frame, from the time it is sent until it arrives.
Together, latency and bandwidth define the speed and capacity of a link or system.
link As applies to Fibre Channel, a physical connection between two ports, consisting of
both transmit and receive fibres.
link services A protocol for link-related actions.
LIP Loop initialization primitive. The signal used to begin initialization in a loop.
Indicates either loop failure or resetting of a node.
LM_TOV Loop master time-out value. The minimum time that the loop master waits for a loop
initialization sequence to return.
loop failure Loss of signal within a loop for any period of time, or loss of synchronization for
longer than the time-out value.
156 Glossary