HP StorageWorks 4/64 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 16

LIRP Loop Initialization Report Position frame. The first frame transmitted in the loop initialization process after all L_Ports have selected an AL_PA. It 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 will 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. It 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. Logical Storage Area Network (LSAN) A logical network that spans multiple fabrics. The path between devices in an LSAN can be local to an edge fabric or cross one or more Multiprotocol Routers and up to one intermediate backbone fabric. LSANs are administered through LSAN zones in each edge fabric. Login server The unit that responds to login requests. Loom The code name given to the second-generation Brocade fabric ASIC, used in the Brocade 2000 series of switches. Loop circuit A temporary bi-directional communication path established between L_Ports. Loop_ID A hexadecimal value representing one of the 127 possible AL_PA values in an Arbitrated Loop. Looplet Private Arbitrated Loop segments connected by a fabric. LPB Loop Port Bypass. A primitive sequence transmitted by an L_Port to bypass one or all L_Ports to 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. L_Port Loop port. A port supporting the Arbitrated Loop protocol. It appears as the part of the output of a switchShow command. 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. 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. 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. It is sent in response to an LR, and expects a response of Idle. Brocade SAN Glossary 1/29/2008 Page 16 of 29