TCP/IPv6 Migration Guide

Glossary
HP NonStop TCP/IPv6 Migration Guide—524524-004
Glossary-21
TELNET
on the operating system and uses the IP protocol to transmit information across the
Internet. It is possible to terminate (shut down) one direction of flow across a TCP
connection, leaving a one-way (simplex) connection. The Internet protocol suite is
often referred to as TCP/IP because TCP is one of the two most fundamental
protocols.
TELNET. The Internet standard protocol for remote terminal connection service. TELNET
allows a user at one site to interact with remote timesharing systems at another site
just as if the user's terminal is connected directly to the remote machine. That is, the
user invokes a TELNET application program that connects to a remote machine,
prompts for a login id and password, then passes keystrokes from the user's terminal
to the remote machine and displays output from the remote machine on the user's
terminal.
TFTP. See Trivial File Transfer Protocol (TFTP).
token. In DSM use, a distinguishable unit in a SPI message. Programs place tokens in an
SPI buffer using the SSPUT or SSINIT procedures and retrieve them from the buffer
with the SSGET procedure. A token has two parts: an identifying code, or token code,
and a token value. In command and response messages, a token normally represents
a parameter to a command, an item of information in a response, or control information
for the subsystem. In event messages, a token normally represents an item of
information about an event or about the event message itself. See also header token.
token number. In DSM programmatic interfaces, the number used by a subsystem to
identify each DSM token that it defines. The token type and the token number together
form the token code.
token ring. 1)þþThe token access procedure used on a network with a sequential or ring
topology. (2) A data link level protocol designed to transfer data over ring-oriented
LANs. The token ring technique is based on the use of a particular bit pattern called a
token that circulates around the ring when all stations are idle.
token type. In DSM programmatic interfaces, the part of a DSM token code that identifies
the data type and length of the token value. The token type and the token number
together form the token code.
token value. In DSM programmatic interfaces, the value assigned to a DSM token.
Trivial File Transfer Protocol (TFTP). The Internet standard protocol for file transfer with
minimal capability and minimal overhead. TFTP depends only on the unreliable,
connectionless datagram delivery service (UDP), so it can be used on machines like
diskless workstations that keep such software in ROM and use it to bootstrap
themselves.
tunneling. The technique of encapsulating IPv6 packets within IPv4 so that they can be
carried across IPv4 routing infrastructures.
UDP. See User Datagram Protocol (UDP).