HP Cisco MDS 8Gb Fabric Switch for HP BladeSystem c-Class - Manual (Page 48)

48 Glossary
MIB Management Information Base. An SNMP structure to help with device management,
providing configuration and device information. See also SNMP .
multicast The transmission of data from a single source to multiple specified N_Ports (as
opposed to all ports on the network).
N_Port Node port. A port on a node that can connect to an FC port or to another N_Port in a
point-to-point connection.
name server A term frequently used to indicate a Simple Name Server (SNS). See also SNS .
NL_Port Node loop port. A node port that has arbitrated loop capabilities. Used to connect an
equipment port to the fabric in a loop configuration through an FL_Port. See also node .
node An FC device that contains an N_Port or NL_Port.
non-participating
mode
A mode in which an L_Port in a loop is inactive and cannot arbitrate or send frames,
but can retransmit any received transmissions. This mode is entered if there are more
than 127 devices in a loop and an AL_PA cannot be acquired. See also L_Port ,
AL_PA .
Nx_Port A node port that can operate as an N_Port or NL_Port.
Onboard
Administrator (OA)
The HP BladeSystem Onboard Administrator (OA) is the enclosure management
processor, subsystem, and firmware base used to support the HP BladeSystem c7000
and all the managed devices contained within the enclosure.
packet A set of information transmitted across a network.
participating mode A mode in which an L_Port in a loop has a valid AL_PA and can arbitrate, send
frames, and retransmit received transmissions.
path selection The selection of a transmission path through the fabric. HP switches use the FSPF
protocol for transmission path selection.
phantom address An AL_PA value assigned to a device that is not physically in the loop. Also known as
phantom AL_PA. See also AL_PA , phantom device .
phantom device A device that is not physically in an arbitrated loop but is logically included through
the use of a phantom address. See also phantom address .
PLOGI Port login. The port-to-port login process by which initiators establish sessions with
targets. See also FLOGI .
point-to-point An FC topology that employs direct links between each pair of communicating entities.
See also buffer-to-buffer flow control.
port cage The metal casing extending out of the FC port on the switch and into which a GBIC or
SFP transceiver can be inserted.
Port_Name The unique identifier assigned to an FC port. It is communicated during login and port
discovery.
POST Power-on self-test. A series of diagnostic tests run by a switch after it is powered on.
primary FCS
switch
Primary Fabric Configuration Server switch. The switch that actively manages the
configuration and security parameters for all switches in the fabric.
private loop An arbitrated loop that does not include a participating FL_Port.
private NL_Port An NL_Port that communicates only with other private NL_Ports in the same loop and
does not log in to the fabric.
public device A device that supports arbitrated loop protocol, can interpret 8-bit addresses, and can
log in to the fabric. See also arbitrated loop .
public loop An arbitrated loop that includes a participating FL_Port and may contain both public
and private NL_Ports. See also arbitrated loop .
public NL_Port An NL_Port that logs in to the fabric, can function within a public or private loop, and
can communicate with private or public NL_Ports. See also private loop .
quad A group of four adjacent ports that share a common pool of frame buffers.
R_A_TOV Resource allocation time-out value. The maximum time a frame can be delayed in the
fabric and still be delivered.