Switch User Manual

g-8
Departmental Switch Models DS-16B and DS-8B Web Tools User Guide
Glossary
K
K28.5 Special 10-bit character used to indicate beginning of transmission
words that perform fibre channel control and signaling functions.
First seven bits are comma pattern. See also Comma.
L
L_Port Loop Port. Node or fabric port that can use loop protocol or fabric
protocol. See also Non-participating mode, Participating mode.
Latency Time required to transmit a frame, from the time sent until time of
arrival.
Link As applies to fibre channel, a physical connection between two ports,
consisting of both transmit and receive fibres. See also Circuit.
Link services 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. See also
Loop initialization.
Loop failure Loss of signal within a loop for any period of time, or loss of
synchronization for longer than the time-out value. See also
E_D_TOV.
Loop initialization Logical procedure used by L_Ports to discover environment. Can be
used to assign AL_PA addresses, detect loop failure, or reset a node.
See also LIP.
Loop_ID Hex value representing one of 127 possible AL_PA values in a loop.
Looplet Set of devices connected in a loop to a port that is part of another
loop.
LPSM Loop Port State Machine. Logical entity that performs arbitrated loop
protocols and defines behavior of L_Ports when they require access to
arbitrated loop.
LWL Long wavelength fibre optic cable. Based on 1300 nm lasers
supporting 1.0625 Gbps link speeds. Connectors are color-coded blue.
See also SWL.