Brocade Communications Systems 804 Lossless Ethernet MAC, LUN mapping, NPort, Persistent binding

DRAFT: BROCADE CONFIDENTIAL

D Glossary and Acronyms

LLDP	Link Layer Discovery Protocol.
Lossless Ethernet MAC
	A full duplex Ethernet MAC supporting at least 2.5KB jumbo frames and
	implementing extensions to avoid Ethernet frame loss resulting from
	congestion.
LUN	Logical unit number. An address for an individual disk drive or virtual partition
	(volume) within a storage device.
LUN mapping	A process that makes a LUN available to some hosts and unavailable to other
	hosts.
MAC	Media Access Control.
MIB	Management Information Base.
MTU	Maximum Transfer Unit.
N_Port	A node port (a Fibre Channel host or storage port in a fabric or point-to-point
	connection) that is assumed to be incapable of arbitrated loop operations.
NPIV	N_Port ID Virtualization (NPIV) enables a single Fibre Channel protocol port to
	appear as multiple, distinct ports, providing separate port identification
	within the fabric for each operating system image behind the port (as if each
	operating system image had its own unique physical port).
Persistent binding	A Fibre Channel (FC) host bus adapter (HBA) feature that enables you to
	permanently assign a system SCSI target ID to a specific FC device, even
	though the device’s ID on the FC loop may be different each time the FC loop
	initializes.
PFC	Priority Flow Control.
Port	A generic reference to an N_Port, NL_Port, F_Port, FL_Port, E_Port, or other
	type of Fibre Channel port.
Port name	A 64-bit unique identifier assigned to each Fibre Channel port. The port name
	is communicated during the login and port discovery processes.
R_Port	Remote port in a fabric. A remote port is a port that is physically separated
	from the adapter.
SNMP	Simple network management protocol, defined for providing network
	management and monitoring functions.
SAN	A storage area network configuration allowing multiple systems and storage
	devices to be interconnected using storage command protocols.
Switch_Name	A 64-bit unique Fibre Channel name assigned to a switch.
TLV	Type Length Value, where:
	• Type is a numeric code that indicates the kind of field this part of the
	message represents.
	• Length is the size of the value field, typically measured in bytes.

• Value is a variable-sized set of bytes that contain data for this part of the message.

166	Brocade Adapters Administrator’s Guide
	53-1001587-01