HP StorageWorks 2/32 HP StorageWorks SAN Switch 2/32 V4.2.X Installation Guide - Page 88
Isolated E_Port, L_Port, Latency, Link Services, Cascade, Fabric mode, Loop mode
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Glossary GBps GigaBytes per second (1,062,500,000 bytes/second). HBA Host Bus Adapter; the interface card between a server or workstation bus and the Fibre Channel network. Hub A Fibre Channel wiring concentrator that collapses a loop topology into a physical star topology. Nodes are automatically added to the loop when active and removed when inactive. Idle Continuous transmission of an ordered set over a Fibre Channel link when no data is being transmitted, to keep the link active and maintain bit, byte, and word synchronization. ISL Interswitch Link; a Fibre Channel link from the E_Port of one switch to the E_Port of another. See also E_Port, Cascade. Isolated E_Port An E_Port that is online but not operational due to overlapping domain IDs or nonidentical parameters (such as E_D_TOVs). IU Information Unit; a set of information as defined by either upper-level process protocol definition or upper-level protocol mapping. L_Port Loop Port; a node port (NL_Port) or fabric port (FL_Port) that has arbitrated loop capabilities. An L_Port can be in one of two modes: ■ Fabric mode Connected to a port that is not loop capable, and using fabric protocol. ■ Loop mode In an arbitrated loop and using loop protocol. An L_Port in loop mode can also be in participating mode or non-participating mode. Latency The period of time required to transmit a frame, from the time it is sent until it arrives. Link Services A protocol for link-related actions. Link As applies to Fibre Channel, a physical connection between two ports, consisting of both transmit and receive fibres. 88 SAN Switch 2/32 Version 4.2.x Installation Guide