A |
|
address |
|
An identifier defined and used by a particular protocol and
associated software to distinguish one node from another.
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address resolution |
|
In NS networks, the mapping of node names to IP addresses and the
mapping of IP addresses to subnet addresses. See also
probe protocol,
ARP.
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alias |
|
A character string that is used as an alternate name for a protocol
or a node.
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|
ARP |
|
Address Resolution Protocol. ARP provides IP to LAN station address
resolution for Ethernet nodes on a LAN.
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|
ARPA |
|
Advanced Research Projects Agency.
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ARPANET |
|
The computer network of the Advanced Research Projects
Agency.
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|
ASCII |
|
American National Standard Code for Information Interchange. A
character set using 7-bit code used for information interchange among
data processing and data communications systems. The American
implementation of International Alphabet No. 5.
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B |
|
binary mode |
|
Data transfer scheme in which no special character processing is
performed. All characters are considered to be data and are passed
through with no control actions being taken.
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|
bind |
|
A system call that assigns a specific name and unique address to a
socket, turning a socket (which is one end-point of the connection) into
an actual file. Binding allows servers to register well-known addresses
with the system and each client to register a specific address for
itself. See also socket and well-known addresses.
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|---|
|
bootp |
|
Internet Boot Protocol (BOOTP) used to start, or boot, LAN devices
such as routers, printers, X-terminals, and diskless workstations.
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|
BOOTPTAB.NET.SYS |
|
The configuration file for the Bootstrap protocol daemon,
bootpd, that contains client and relay information.
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|---|
C |
|
client |
|
A node on the internetwork that asks to use one of the Internet
Services on the host. For example, a Telnet client is the process that
uses Telnet protocol to establish a virtual terminal on your system.
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|---|
D |
|
daemon |
|
A process that either waits for the occurrence of an event or
waits to perform some specificied task on a periodic basis. Daemons
are typically started once, on system startup, and they frequently
start other processes to handle service requests. The Internet daemon
inetd is a good example of such a process.
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|
datagram |
|
A message consisting of content and all of the
information needed to deliver the content between one system and
another. Datagrams are sent using the User Datagram Protocol, or UDP.
See also UDP.
|
|
datagram service |
|
A connectionless service that transmits messages, or datagrams,
from one system to another. Because datagrams are transmitted without
relying on a pre-established network connection (hence the term
connectionless), each datagram must contain all the information
required for its delivery. The protocol associated with datagram service
is UDP, or User Datagram Protocol. See also
datagram,
protocol, and
UDP.
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|
DCE |
|
Data circuit-terminating equipment. The interfacing equipment
required in order to interface to data terminal equipment (DTE) and its
transmission circuit. Synonyms: data communications equipment, dataset.
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|
domain name |
|
A name designated for a system in ARPANET standard format. This
name can be used by other nodes on the network to access the host for
which it is configured.
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|
DTC |
|
Datacommunications and Terminal Controller. The DTC is a hardware
device, configured as a node on a LAN, that enables asynchronous
devices to access HP 3000 Series 900 computers. Terminals can either
be directly connected to the DTC, or they can be remotely connected
through a Packet Assembler Disassembler (PAD). The DTC can be
configured with DTC/X.25 Network Access cards and DTC/X.25 Network
Access software. A DTC/X.25 iX Network Link consists of two software
modules: the X.25 iX System Access software (running on the host) and
the DTC/X.25 Network Access software (running on the DTC).
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|
DTC Telnet Access |
|
An HP product providing Telnet connections from HP 9000 and
non-HP systems running ARPA standard Telnet services to the HP 3000.
The solution includes a Telnet Access Card (TAC) that resides in the
DTC 72MX or DTC 48 and provides protocol conversion between Telnet and
Avesta Flow Control Protocol (AFCP). Equivalent functionality is
provided by a separate product, the Telnet Express Box (TEB).
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|
DTE |
|
Data Terminal Equipment. Equipment that converts user information
into data transmission signals or reconverts received data signals
into user information. Data terminal equipment operations in
conjunction with data circuit-terminating equipment.
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E |
|
environment |
|
A session that is established on a remote node.
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|
Ethernet |
|
A Local Area Network system that uses baseband transmission at 10
Mbps over coaxial cable. Ethernet is a trademark of Xerox Corporation.
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|---|
F |
|
file equation |
|
An assignment statement that is used to associate a file with a
specific device or type of device during execution of a program.
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|---|
|
flow control |
|
A means of regulating the rate at which data transfer takes place
between devices to protect against data overruns.
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|---|
|
FTP |
|
File Transfer Protocol. The Internet Services protocol that
facilitates the transfer of files between systems. Originally developed
by the Advanced Research Projects Agency (ARPA).
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|---|
H |
|
host computer |
|
A computer on which network communications software resides, and
which is currently providing a service to a requesting client.
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|
HOSTS.NET.SYS |
|
The host name data base file which associates Internet addresses
with official host names and aliases.
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|---|
I |
|
IEEE 802.3 |
|
A standard for a broadcast local area network published by the
Institute for Electrical and Electronics Engineers (IEEE). This standard
is used for both the ThinLAN and ThickLAN implementations of the Local
Area Network (LAN).
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|---|
|
inetd |
|
The Internet server that allows one daemon to invoke many servers,
thus reducing load on the system. Normally started at system boot time,
only one inetd can run at any given time.
|
|---|
|
INETDCNF.NET.SYS |
|
The configuration file for the Internet daemon inetd, which
determines which installed Internet Services are available to users.
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|---|
|
INETDSEC.NET.SYS |
|
The optional security file for inetd, which lets you control
access to individual services to specific accounts, groups, or users.
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|---|
|
internet |
|
An aggregation of computer systems and other types of computing
equipment that share information according to a set of defined
communications protocols. Local networks, such as all computer systems
linked together within a company, are typically linked to other local
networks via the Internet. Or, individual systems which are not part of
a local network, such as a personal computer or a standalone business
computing system, can exchange information via the Internet if they are
equipped with the appropriate communications software and hardware.
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|
Internet Protocol (IP). |
|
A set of rules used to route information between different local
networks in an internetwork, as well as among nodes in the same local
network. The internet protocol corresponds to layer three, the network
layer, of the OSI model. See also IP address.
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|---|
|
IP |
|
See Internet Protocol.
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|---|
|
IP address |
|
Internet Protocol address. An address used by the Internet Protocol
to correctly route information. A complete IP address comprises a
network portion and a subnet portion to identify a specific network, and
a node portion to identify a node within that network.
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L |
|
local host |
|
The host system you are currently working from.
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|---|
|
local node |
|
Same as host system.
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|---|
|
loopback |
|
The routing of messages from a node back to itself.
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|---|
N |
|
name space |
|
The set of possible names allowed in a given environment. The POSIX
name space, which follows hierarchical file system syntax (i.e.,
\sys\pub\myfile ) is distinct from the MPE/iX name space,
which follows MPE naming rules (i.e., MYFILE.PUB.SYS).
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|---|
|
network address |
|
Either the network portion of an IP address (as opposed to the node
portion) or a node's X.25 address when referring to X.25 networks.
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|---|
|
network directory |
|
A file containing information required for one node to communicate
with other nodes in 1) an internetwork, 2) an X.25 network, or 3) a
network that contains non-HP nodes. The active network directory on a
node must be named NSDIR.NET.SYS.
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|---|
|
Network Interface |
|
The collection of software that enables data communication between
a system and a network. A node possesses one or more network interfaces
for each of the networks to which it belongs. Examples of network
interfaces include Local Area Networks (LANs), point-to-point (router),
X.25, token ring, SNA, loopback, and gateway half. The maximum number of
supportable network interfaces is 12, one of which is reserved for
loopback.
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|---|
|
Network Services |
|
Software application products that can be used to access data,
initiate processes, and exchange information among nodes in the network.
The NS 3000/iX Network Services include RPM, VT, RFA, RDBA, and NFT.
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|---|
|
NI |
|
See Network Interface.
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|---|
|
NMCONFIG.PUB.SYS |
|
The file that contains all the network configuration data for the
HP 3000 Series 900 computer on which it resides. It includes information
about the clients that can access the system as well as information
about any Network Services (NS) products running on the system. This is
the only file name allowed.
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|---|
|
NMMAINT |
|
Node Management services MAINTenance utility. A utility that lists
the software module version numbers for all HP AdvanceNet products,
including NS 3000/iX. It detects missing or invalid software modules.
|
|---|
|
NMMGR |
|
Node Management Services Configuration Manager. A software
subsystem that enables you to configure network connectivity and access
parameters for an HP 3000 Series 900 computer.
|
|---|
|
NMMGRVER |
|
Node management services conversion utility. A conversion program
that converts configuration files created with NMMGR from an earlier
version to the latest format.
|
|---|
|
node |
|
A computer that is part of a network. The DTC, or Data
communications and Terminal Controller that enables asynchronous devices
to access the HP 3000, is also considered to be a node and has its own
address.
|
|---|
|
node address |
|
The node portion of an Internet Protocol (IP) address.
|
|---|
|
Node Management Services Configuration Manager |
|
See NMMGR.
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|---|
|
node name |
|
A character string that uniquely identifies each system in a
network or internetwork. Each node name in a network or internetwork
must be unique; however, a single node can be identified by more than
one node name.
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|---|
|
NS |
|
See Network Services.
|
|---|
|
NS 3000/iX Link |
|
Software and hardware that provides the connection between nodes on
a network. Some of the NS 3000/iX links available are the ThinLAN
3000/iX Link and its ThickLAN option, the DTC/X.25 iX Network Link, and
the NS Point-to-Point 3000/iX Link.
|
|---|
|
NS 3000/iX Network Services |
|
Software applications that can be used to access data, initiate
processes, and exchange information among nodes in a network. The
services are RPM, VT, RFA, RDBA, and NFT.
|
|---|
|
NSDIR.NET.SYS |
|
The name of the active network directory file. See also network
directory.
|
|---|
P |
|
packets |
|
Encapsulated messages transmitted across a network or an
internetwork.
|
|---|
|
privileged mode |
|
A capability assigned to accounts, groups, or users allowing
unrestricted memory access, access to privileged CPU instructions, and
the ability to call privileged procedures.
|
|---|
|
probe protocol |
|
An HP protocol used by NS 3000/iX IEEE 802.3 networks to get
information about other nodes on the network. It resolves names to IP
addresses, and resolves IP addresses to IEEE 802.3 addresses.
|
|---|
|
process |
|
A single instance of a program that is being executed by the
operating system, also known as a task.
|
|---|
|
protocol |
|
A set of rules that enables two or more data processing entities to
exchange information. In networks, protocols are the rules and
conventions that govern each layer of network architecture. They define
what functions are performed and how messages are exchanged.
|
|---|
|
PROTOCOL.NET.SYS |
|
The protocols file, described above.
|
|---|
|
protocols file |
|
A file that contains a list of protocols known to the system, plus
the identification number and one or more aliases for each. See also
protocol.
|
|---|
R |
|
relay |
|
Using one node on an internetwork to pass information through to
another node or nodes. A relay entry in the bootpd
configuration file, for example, provides the information necessary to
forward, or relay, bootstrap protocol requests to one or more bootp
servers.
|
|---|
|
remote host |
|
The host system from which you, as a client, are requesting service.
|
|---|
|
remote node |
|
A node on an internetwork other than the node you are currently
using or referring to.
|
|---|
|
RESLVCNF.NET.SYS |
|
An initialization file for the domain name resolver. It contains
information needed by the network to determine how to resolve a domain
name to an IP address.
|
|---|
|
RSLVSAMP.NET.SYS |
|
Sample initialization file for the domain name resolver.
|
|---|
S |
|
server |
|
A node on a network or internetwork that provides on-demand service
to requesting clients.
|
|---|
|
services file |
|
The file which associates official service names and aliases with
the port number and protocol the services use. In the HFS name space,
this file is /etc/services.
|
|---|
|
SERVICES.NET.SYS |
|
The services name file, described above.
|
|---|
|
socket |
|
A special kind of file that uniquely identifies one end point of an
Internetwork connection. A socket specifies the protocol being used (for
example TCP) the Internetwork address (for example
192.44.244.7) and the integer identifiying the process
(for example 377). A socket pair completely specifies the two processes
that make up an Internetwork connection.
|
|---|
|
stream services |
|
A type of service that uses Transmission Control Protocol (TCP) to
exchange information on an internetwork. Stream services rely on an
established, known connection between two systems, client and host,
similar to a leased or dedicated phone line between two parties.
|
|---|
|
stream socket |
|
A type of socket that is used to establish stream services between
two systems.
|
|---|
|
subnet |
|
Another name for a network, especially if the network is part of an
internetwork. The word subnet is also a synonym for intranet.
|
|---|
|
subnet mask |
|
A grouping of bits that determines which bits of the IP address
will be used to define a subnetwork. The subnet mask is configured using
the NMMGR utility and specified in the same format as an IP address.
|
|---|
T |
|
TAC |
|
Telnet Access Card. A board within a DTC 48 or 72MX.
|
|---|
|
TCP/IP |
|
Transmission Control Protocol/Internet Protocol. A set of rules
that establishes and maintains connections between nodes on an
internetwork. TCP/IP regulates the flow of data, breaks messages into
smaller fragments if necessary (and reassembles the fragments at the
destination), detects errors, and retransmits messages if errors have
been detected.
|
|---|
|
TEB |
|
Telnet Express Box. An HP product consisting of a DTC dedicated to
providing protocol conversion between Telnet on TCP/IP and AFCP to allow
incoming calls from the Internet Services environment to HP 3000 systems.
|
|---|
|
Telnet |
|
The application protocol offering virtual terminal service in the
Internet suite of protocols developed by the Advanced Research Projects
Agency (ARPA).
|
|---|
|
TELNET.ARPA.SYS |
|
A file that contains the Telnet client program.
|
|---|
|
TELNTDOC.ARPA.SYS |
|
The readme file for the Telnet client program.
|
|---|
|
TFTP |
|
Trivial File Transfer Protocol, TFTP, a set of rules used to read
and write files to or from a remote system.
|
|---|
U |
|
UDP |
|
User Datagram Protocol, a set of rules used to send connectionless
messages called datagrams between systems. UDP requires
much less overhead than a protocol such as TCP because it does not
require acknowledgement from the recipient that the message reached its
destination.
|
|---|
V |
|
Virtual Terminal |
|
A network service that allows a user to establish interactive
sessions on a node.
|
|---|
W |
|
WAN |
|
Wide Area Network. A data communications network of unlimited size,
used for connecting localities, cities, and countries.
|
|---|
|
well-known address |
|
The port number that identifies the specific user process of an
available and commonly-used Internet Service. For example, the port
number for the File Transfer Protocol (FTP) is 21.
|
|---|
X |
|
X.25 |
|
Defines the interface between a DTE and a DCE for packet mode
operation on a public data network (PDN).
|
|---|
