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SN0054614-00 K Glossary-3
SANsurfer FC/CNA HBA CLI User’s Guide
Command Line Interface for QLogic FC and FCoE Adapters
DCB
Data center bridging. Provides enhance-
ments to existing 802.1 bridge specifica-
tions to satisfy the requirements of
protocols and applications in the data
center. Because existing high-perfor-
mance data centers typically comprise
multiple application-specific networks that
run on different link layer technologies
(Fibre Channel for storage, InfiniBand for
high-performance computing, and
Ethernet for network management and
LAN connectivity), DCB will enable 802.1
bridges to be used for the deployment of a
converged network where all applications
can be run over a single physical infra-
structure.
DCBX
Data center bridging exchange protocol.
Used by DCB devices to exchange config-
uration information with directly connected
peers. The protocol may also be used for
misconfiguration detection and for configu-
ration of the peer.
device
A target, typically a disk drive. Hardware
such as a disk drive, tape drive, printer, or
keyboard that is installed in or connected
to a system. In FC, a target device.
driver
The software that interfaces between the
file system and a physical data storage
device or network media.
E_Port
Expansion port. A port in an FC switch that
connects to another FC switch or bridge
device by an inter-switch link (ISL).
E_Ports are used to link FC switches to
form a multi-switch fabric.
echo diagnostic test
Transmits a received signal back to the
sender to verify the integrity of the device.
Enhanced Ethernet
Also called data center Ethernet or
converged enhanced Ethernet) refers to
new enhancements to the existing
Ethernet standard that eliminate Ethernet’s
inherently lossy nature and make 10Gb
Ethernet a viable storage networking
transport.
enhanced transmission selection
See ETS.
Ethernet
The most widely used LAN technology that
transmits information between computers,
typically at speeds of 10 and 100 million
bits per second (Mbps).
ETS
Enhanced transmission selection (ETS)
provides a common management frame-
work for assignment of bandwidth to
802.1p CoS-based traffic classes.
expansion port
See E_Port.
F_Port
Fabric port. The “fabric” port in a FC fabric
switch provides a point-to-point link attach-
ment to a single N_Port. F_Ports are inter-
mediate ports in virtual point-to-point links
between end ports, for example N_Port to
F_Port to F_Port to N_Port using a single
FC fabric switch.
fabric
A fabric consists of cross-connected FC
devices and switches.