Technical data

Glossary-22 Brocade SilkWorm 4100 Hardware Reference Manual
Publication Number: 53-0000563-02
Performance
Monitoring
A Brocade SilkWorm switch feature that monitors port traffic and includes frame counters, SCSI read
monitors, SCSI write monitors, and other types of monitors.
persistent
error log
Error messages of a high enough level (by default, Panic or Critical) are saved to flash memory on the
switch instead of to RAM. These messages are saved over reboots and power cycles, constituting the
persistent error log. Note that each CP on a SilkWorm 12000 has its own unique persistent error log.
phantom
address
An AL_PA value that is assigned to a device that is not physically in the loop. Also known as "phantom
AL_PA."
phantom
device
A device that is not physically in an arbitrated-loop but is logically included through the use of a
phantom address.
phantom
domain
See xlate domain.
PID Port identifier. See also core PID.
PKI Public key infrastructure. An infrastructure that is based on public key cryptography and CA (certificate
authority) and that uses digital certificates. See also CA, digital certificate, public key cryptography.
PKI
certification
utility
Public key infrastructure certification utility. A utility that makes it possible to collect certificate
requests from switches and to load certificates to switches. See also digital certificate, PKI.
PLA Programmable logic array. A small FPD.
PLD Programmable logic device. Interchangeable with “FPD”.
PLDA Private loop direct-attached. A technical report specifying a logical loop.
PLOGI Port login. The port-to-port login process by which initiators establish sessions with targets. See also
FLOGI.
point-to-point A Fibre Channel topology that employs direct links between each pair of communicating entities. See
also topology.
port In a Brocade SilkWorm switch environment, an SFP or GBIC receptacle on a switch to which an optic
cable for another device is attached.
port address In Fibre Channel technology, the port address is defined in hexadecimal. In the Brocade Fabric OS, a
port address can be defined by a domain and port number combination or by area number. In an ESCON
Director, an address used to specify port connectivity parameters and to assign link addresses for
attached channels and control units.
port cage The metal casing extending out of the optical port on the switch, into which the SFP can be inserted.
port card A hardware component that provides a platform for field-replaceable, hot swappable ports.
port log A record of all activity on a switch, kept in volatile memory.