HP StorageWorks 2/64 - Core Switch Installation Manual page 157

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_ID A hex value representing one of the 127 possible AL_PA values in an arbitrated
loop.
LPSM Loop Port State Machine. The logical entity that performs arbitrated loop protocols
and defines the behavior of L_Ports when they require access to an arbitrated loop.
LWL Long wavelength. A type of fiber optic cabling that is based on 1300mm lasers and
supports link speeds up to 2 Gbit/sec. May also refer to the type of transceiver.
master port The port that determines the routing paths for all traffic flowing through a trunking
group. One of the ports that is in the first ISL in the trunking group is designated as
the master port for that group.
MIB Management Information Base. An SNMP structure to help with device
management, providing configuration and device information.
multicast The transmission of data from a single source to multiple specified N_Ports
(as opposed to all the ports on the network).
N_Port Node port. A port on a node that can connect to a Fibre Channel port or to another
N_Port in a point-to-point connection.
name server Frequently used to indicate Simple Name Server.
NL_Port Node loop port. A node port that has arbitrated loop capabilities. Used to connect
an equipment port to the fabric in a loop configuration through an FL_Port.
node A Fibre Channel device that contains an N_Port or NL_Port.
non-participating A mode in which an L_Port in a loop is inactive and cannot arbitrate or send
mode frames, but can retransmit any received transmissions. This mode is entered if there
are more than 127 devices in a loop and an AL_PA cannot be acquired.
Nx_Port A node port that can operate as either an N_Port or NL_Port.
packet A set of information transmitted across a network.
participating A mode in which an L_Port in a loop has a valid AL_PA and can arbitrate, send
mode frames, and retransmit received transmissions.
path selection The selection of a transmission path through the fabric. HP switches use the FSPF
protocol.
phantom address An AL_PA value that is assigned to an device that is not physically in the loop. Also
known as phantom AL_PA.
Core Switch 2/64 and SAN Director 2/128 installation guide 157