HP StorageWorks 2/16V Brocade Glossary (53-1000040-03, November 2006) - Page 27

Glossary OX_ID Originator ID or exchange ID. Refers to the exchange ID assigned by the originator port. P packet A set of information transmitted across a network. See also frame. PAL Programmable Array Logic. A relatively small FPD. parallel The simultaneous transmission of data bits over multiple lines. Participating A mode in which an L_Port in a loop has a valid AL_PA and can arbitrate, send frames, and retransmit mode received transmissions. See also L_Port and Nonparticipating mode. passive A low-cost copper Fibre Channel connection, allowing distances up to 13 m between devices. copper path selection The selection of a transmission path through the fabric. Brocade switches use the FSPF protocol. See also FSPF. payload A Fibre Channel frame has a header and a payload. The payload contains the information being transported by the frame; it is determined by the higher-level service or FC_4 upper-level protocol. There are many different payload formats, based on protocol. See also header. PBC Port bypass circuit. A circuit in hubs or a disk enclosure to open or close a loop to add or remove SAN devices. PCBA Printed circuit board assembly. PCM Pulse-code modulation. A standard method of encoding analog audio signals in digital form. Performance A Brocade SilkWorm switch feature that monitors port traffic and includes frame counters, SCSI read Monitoring monitors, SCSI write monitors, and other types of monitors. persistent In Brocade products, a configuration that remains in place over a reboot or power cycle of the switch or director. phantom A PID value that is assigned to a device that is not physically in a loop. address phantom A device that is not physically in an arbitrated-loop but is logically included through the use of a device phantom address. phantom Domain ID used for importing devices into edge or backbone fabrics. domain ID physical fabric In administrative domains, the unfiltered view of the actual fabric. At the physical fabric level, you can see a hierarchical view of zoning, but you cannot make changes. See also AD255. PID Port identifier. See also VC Encoded PID, native PID, core PID, and extended edge PID. Brocade Glossary 23 Publication Number: 53-1000040-03