Brocade Glossary (53-1000040-03, November 2006)

26 Brocade Glossary
Publication Number: 53-1000040-03
Glossary
proxy device A virtual device present in a local fabric that represents a physical device connected to a different edge
fabric. From the perspective of a local device that is physically connected to a fabric, a proxy device is
said to be imported; from the perspective of the remote fabric, the proxy device is said to be exported.
pstate Port State Machine.
PSU Power supply unit.
public device A device that supports arbitrated-loop protocol, can interpret 8-bit addresses, and can log in to the
fabric.
public key The public half of a key pair. See also key and key pair.
public key
cryptography
A type of cryptography that uses a key pair, with the two keys in the pair called at different points in the
algorithm. The sender uses the recipient's public key to encrypt the message, and the recipient uses the
recipient's private key to decrypt it. See also key pair and PKI.
public loop An arbitrated loop that includes a participating FL_Port and can contain both public and private
NL_Ports.
public NL_Port An NL_Port that logs in to the fabric, can function within either a public or a private loop, and can
communicate with either private or public NL_Ports.
Q
QLA A type of Fibre Channel controller.
QLFA QuickLoop Fabric Assist. Arbitrated-loop technology.
QoS Quality of service.
queue A mechanism for each AL_PA address that allows for collecting frames prior to sending them to the
loop.
QuickLoop A Brocade software product that allows multiple ports on a switch to create a logical loop. Devices
connected via QuickLoop appear to each other as if they are on the same arbitrated loop.
QuickLoop
mode
Allows initiator devices to communicate with private or public devices that are not in the same loop.
R
R_A_TOV Resource allocation timeout value. The maximum time a frame can be delayed in the fabric and still be
delivered. See also E_D_TOV, RR_TOV.
R_CTL Route control. The first 8 bits of the header, which defines the type of frame and its contents.
R_RDY Receiver ready. A primitive signal indicating that the port is ready to receive a frame.