EMC Connectrix B Series Hardware Reference Manual page 100

Glossary
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.
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.
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EMC Connectrix B Series DS-8B3 and DS-16B3 Hardware Reference Manual