HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Master Glossary (AA-RW7NA-T - Page 19

LISA LISM LM_TOV login server loop circuit loop failure Loop_ID loop initialization looplet Loop Mode LPB LPE L_Port LPSM LR LRR LSAN 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. Loop-initialization select master frame. This Frame applies only to the Arbitrated Loop topology. It is the first frame transmitted in the loop initialization process in which 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. Loop master timeout value. The minimum time that the loop master waits for a loop initialization sequence to return. The unit that responds to login requests. A temporary bidirectional communication path established between L_Ports. Loss of signal within a loop for any period of time, or loss of synchronization for longer than the timeout value. A hexadecimal value representing one of the 127 possible AL_PA values in an arbitrated loop. 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. A set of devices connected in a loop to a port that is a member of another loop. 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. Loop port bypass. A primitive sequence transmitted by an L_Port to bypass one or all L_Ports to which it is directed. For example, if Port A suspects that Port B is malfunctioning, Port A can send an LPB to Port B so that Port B retransmits everything it receives, but it is not be active on the loop. This sequence is used only in arbitrated loops. 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. Loop port. A node port (NL_Port) or fabric port (FL_Port) that has arbitrated-loop capabilities. An L_Port can be in either Fabric Mode or Loop Mode. 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. 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. Link reset response. A primitive sequence during link initialization between two N_Ports in point-to-point topology or an N_Port and an F_Port in fabric topology. An LRR is sent in response to an LR. Logical storage area network. A network that enables device and storage connectivity that spans two or more fabrics. The path between devices in an LSAN can be local to a fabric or cross one or more MP Routers and one or more backbone fabrics. Fabric OS 5.x master glossary 19