Brocade Communications Systems 415 - Manual (Page 180)

166 Brocade Adapters Administrator’s Guide
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Glossary and Acronyms
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DRAFT: BROCADE CONFIDENTIAL
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.