Ethernet Support Guide for HP-UX 11i v3

Glossary
1000Base-SX A specific implementation of 1000 Mbit/s operating over two multimode fiber cables, as specified
in Standard IEEE 802.3z/D.50-1998.
1000Base-T A specific implementation of 1000 Mbit/s operating over four-pair Cat-5 or Cat-5e UTP cables,
as specified in IEEE 802.3ab standards.
2-tuple Defines a communicating local and remote Internet socket pair by the source and destination IP
addresses. For excample, TCP 2-tuple is used for TCP packet management and calculations; UDP
2-tuple is used for UDP packet management and calculations.
4-tuple Defines a communicating local and remote Internet socket pair by the source and destination IP
addresses and port numbers. For example, TCP 4-tuple is used for TCP packet management and
calculations; UDP 4-tuple is used for UDP packet management and calculations.
802.1 IEEE 802.1 is a working group of the IEEE 802 project of the IEEE Standards Association. It is
concerned with 802 LAN/MAN architecture, internetworking among 802 LANs, MANs and
other wide area networks, 802 Link Security, 802 overall network management, protocol layers
above the MAC and LLC layers.
802.1D 802.1D is the IEEE MAC Bridges standard that includes Bridging, Spanning Tree and others. It
is standardized by the IEEE 802.1 working group. It includes details specific to linking many of
the other 802 projects including the widely deployed 802.3 (ethernet), 802.11 (Wi-Fi) and
802.16 (WiMax) standards. VLANs (virtual LANs) are not part of 802.1D, but specified in
802.1Q.
802.1p IEEE Standard supplement, now incorporated in IEEE 802.1D. Defines 8 priority levels for traffic
classification at the data link level and suggests how they might be used.
802.1Q IEEE Standard that specifies the architecture for VLAN tagging, association, and VLAN-capable
bridges.
802.3 IEEE 802.3 is a working group and a collection of IEEE standards defining the physical media
and the working characteristics of Ethernet. This is generally a local area network technology
with some wide area network applications. Physical connections are made between nodes and
infrastructure devices (hubs, switches, routers) by various types of copper or fiber cable. 802.3
is a technology that supports the IEEE 802.1 network architecture.
802.3u-1995
network
A 10- or 100- Mbit/s LAN, specified in the IEEE 802.3u-1995 Standard for LANs. It uses the
Carrier Sense Multiple Access/Collision Detection (CSMA/CD) network access method to give
every node equal access to the network.
Accelerated Virtual
Input/Output
(AVIO)
An I/O protocol that improves virtual I/O performance for network and storage devices used
within the Integrity VM (HPVM) environment. The protocol also enables support for a greater
number of virtual I/O devices per guest.
See also Direct Input Output (DIO).
adapter See card.
alias Name of the interface that corresponds to a given Internet address on a system.
autonegotiation A mechanism defined in IEEE 802.3u-1995 whereby devices sharing a link segment can exchange
data and automatically configure themselves to operate at the highest capability mode shared
between them. This is also used for link configuration per IEEE 802.3z and IEEE 802.3ab standards
of duplex and flow control configuration between two 1000Base-SX/T links.
card The adapter, most often in reference to the hardware or to a specific form factor (such as PCIe
mezzanine card). An I/O expansion card (also I/O adapter) is a printed circuit board that can
be inserted into an expansion slot of a computer motherboard or backplane to add network
functionality to a computer system through the expansion bus.
card instance
number
A number that uniquely identifies a device within a class. A class of devices is a logical grouping
of similar devices.
combination
(combo) card
An Ethernet/Fibre Channel combo card is a PCIe device that can provide both Ethernet and Fibre
Channel connectivity, or a PCI-X device that provides both Ethernet and SCSI connectivity. For
example, on some combo cards, HP-UX configures a card as four separate devices — a dual-port
FC device and a dual-port Ethernet LAN device. The FC devices are connected to an FC fabric
68 Glossary