HP StorageWorks 2/64 - Core Switch Command Reference Manual page 809

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 node resetting.
LIPA Loop-initialization previously assigned. The device marks a bit in the bitmap if it did not log in
with the fabric in a previous loop initialization.
LIRP Loop-initialization report position frame. The first frame transmitted in the loop initialization
process after all L_Ports have selected an AL_PA. The LIRP gets transmitted around the loop so
all L_Ports can report their relative physical position. This is an optional frame.
LISA Loop-initialization soft-assigned frame. The fourth frame transmitted in the loop initialization
process after a temporary loop master has been selected. L_Ports that have not selected an
AL_PA in a LIFA, LIPA, or LIHA frame select their AL_PA here.
LISM Loop-initialization select master frame. The first frame transmitted in the initialization process
when L_Ports select an AL_PA. LISM is used to select a temporary loop master or the L_Port that
will subsequently start transmission of the LIFA, LIPA, LIHA, LISA, LIRP, or LILP frames.
LM_TOV Loop master timeout value. The minimum time that the loop master waits for a loop
initialization sequence to return.
login server The unit that responds to login requests.
Loom The code name given to the second-generation HP Fabric ASIC. This is the ASIC used in the
StorageWorks 1 GB switches.
loop circuit A temporary bidirectional communication path established between L_Ports.
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 hexadecimal 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 Mode One of two possible modes for an L_Port, in which the L_Port is in an arbitrated loop, using
loop protocol. An L_Port in Loop Mode can also be in Participating Mode or Nonparticipating
Mode.
looplet A set of devices connected in a loop to a port that is a member of another loop.
Loop port bypass. A primitive sequence transmitted by an L_Port to bypass one or all L_Ports to
LPB
which it is directed. It is used only in arbitrated loops.
LPE Loop port enable. A primitive sequence transmitted by an L_Port to enable one or all L_Ports
that have been bypassed with the LPB. It is used only in arbitrated loops.
LPSM Loop Port State Machine. Logic that monitors and performs the tasks required for initialization
and access to the loop. It is maintained by an L_Port to track behavior through different phases
of loop operations. Alternatively, the logical entity that performs arbitrated-loop protocols and
defines the behavior of L_Ports when they require access to an arbitrated loop.
LR Link reset. A primitive sequence used during link initialization between two N_Ports in
point-to-point topology or an N_Port and an F_Port in fabric topology. The expected response
is an LRR.
Fabric OS 5.x command reference guide 809