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Glossary
Glossary
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Internet Address: The network address of a
computer node. This address identifies both which
network the host is on and which host it is. Refer to
the Installing and Administering LAN/9000
Software manual for detailed information about
network addressing.
IP Address: See Internet Address.
L
LAN: See Local Area Network.
Local Area Network (LAN): A data
communications system that allows a number of
independent devices to communicate with each
other.
Local Network: The network to which a node is
directly attached.
M
Major Number: Unique value that identifies an
individual hardware device.
Maximum Transmission Unit (MTU): Largest
amount of data that can be transmitted through that
interface. This value does not include the LLC or
MAC headers.
Mbps: Megabits per second
MBps: Megabytes per second
MTU: See Maximum Transmission Unit
N
Network Interface: A communication path
through which messages can be sent and received. A
hardware network interface has a hardware device
associated with it, such as a LAN or FDDI card. A
software network interface does not include a
hardware device, for example, the loopback
interface. For every IP address instance, there must
be one network interface configured.
Network Management Identifier (NMID): A
unique ID assigned by the system for the network
management of each network interface.
NMID: See Network Management Identifier
Node: Any point in a network where services are
provided or communications channels are
interconnected. A node could be a workstation or a
server processor.
O
Online Addition/Replacement (OLA/R): The
ability of a PCI I/O card to be added or replaced
without the need to shut down or reboot the system.
For instructions on how to perform OLA/R, refer to
Configuring HP-UX For Peripherals.
P
PCI: Peripheral Component Interconnect.
Packet: A sequence of binary digits that is
transmitted as a unit in a computer network. A
packet usually contains control information plus
data.
Physical Point of Attachment: A unique number
assigned to each network interface, distinct from
NMID.
PMTU: Path MTU
PPA: See Physical Point of Attachment
Protocol: A specification for coding messages
exchanged between two communications processes.
R
RJ-45: The name for the connector type used with
UTP cabling.
S
Subnetwork: Small discrete physical networks
connected via gateways which share the same
network address space. Refer to Installing and
Administering LAN/9000 Software for detailed
information about subnetworks and subnet
addressing.
Subnet mask: A 32-bit mask which, when AND'd
with an internet address, determines a subnetwork
address. When the internet address is AND'd with
the subnet mask, the ones in the host portion of the
subnet mask will “overwrite” the corresponding bits
of the host portion of the internet address, resulting