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Brocade Adapters Administrator’s Guide
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Glossary and acronyms
D
Host Bus Adapter.
HCM
Host Connectivity Manager.
Host Bus Adapter (HBA)
A hardware facility in a node that provides an interface attachment.
IOC
I/O Controller.
ITL
Initiator-Target-LUN. An Initiator Port (HBA controller) talks to one Target Port
addressing one LUN.
LLDP
Link Layer Discovery Protocol.
Login BB_Credit
On an arbitrated loop, a value equal to the number of receive buffers that a
receiving NL_Port guarantees to have available when a loop circuit is
established. Login BB_Credit is communicated in the FLOGI, PLOGI, or pDISC
link services.
Loop Initialization Primitive Sequence
A primitive sequence used to begin the arbitrated loop initialization process.
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.
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