Expand Configuration and Management Manual (G06.24+)

Glossary
Expand Configuration and Management Manual—523347-008
Glossary-20
TCPSAM process
TCPSAM process. The name of the Parallel Library TCP/IP access method.
TF. See time factor (TF).
TFTP. See Trivial File Transfer Protocol (TFTP) server process.
throughput. The amount of traffic that can be handled by an Expand line-handler process.
time factor (TF). A number assigned to a line, path, or route to indicate efficiency in
transporting data. The lower the TF, the more efficient the line, path, or route.
Transmission Control Protocol (TCP). The Internet standard transport-level protocol that
provides the reliable, full-duplex stream service on which many application protocols
depend. TCP allows a process on one machine to send a stream of data to a process
on another. It is connection-oriented, in the sense that before transmitting data
participants must establish a connection. Software implementing TCP usually uses the
Internet Protocol (IP) to transmit information across the Internet. The IP suite is often
referred to as TCP/IP because TCP is one of the two most fundamental protocols. See
also User Datagram Protocol (UDP).
Trivial File Transfer Protocol (TFTP) server process. A process created by the WAN
Manager process ($ZZWAN) that runs as a process pair in each processor that
supports a ServerNet wide area network (SWAN) concentrator. One TFTP server
process is required for each NonStop TCP/IP process that supports a SWAN
concentrator.
tuning. A tactical adjustment of a network’s dynamic resources to achieve some well-
defined performance goals. Tuning is influenced by and can influence the activities of
network planning, configuration, management, and troubleshooting.
UDP. See User Datagram Protocol (UDP).
UDP port. See port number.
User Datagram Protocol (UDP). An Internet-standard, transport-level protocol that
provides unreliable datagram service. The integrity of the packets is maintained; when
a packet is received, it is guaranteed to exactly match what was sent. However, neither
the delivery of packets nor the order in which datagrams are received is guaranteed.
variable packet size. A feature that allows Expand nodes to send packets that can exceed
the size of a normal Expand packet. The variable packet size feature is enabled using
the PATHPACKETBYTES modifier. It should be enabled when you are sending large
blocks of data. Contrast multipacket frame.
WANBoot process. A process created by the WAN manager process ($ZZWAN) that runs
as a process pair in each processor that supports a ServerNet wide area network
(SWAN) concentrator. WANBoot processes download Internet Protocol (IP) addresses
to the SWAN concentrators. WANBoot processes also initiate and sequence the
FIRMUP procedure.