3Com CoreBuilder 2500 Getting Started Manual page 103

RS-232 serial port
The ports on the system processor accepting a
terminal or modem connector. They change the
parallel arrangement of data within computers to
the serial (one after the other) form used on data
transmissions links. This port can be used for
dedicated local management access, as well as for
remote access.
S port
Slave port. Each PHY/PMD pair, designated as a
port, belongs to one of four types: A, B, M, or S. A
single attachment station (SAS or SAC) has an S
port that is intended to be attached to an M port
within a concentrator tree. See M port.
SAC
Single Attachment Concentrator. A concentrator
that offers one attachment to the FDDI network. A
SAC has an S port that is intended to be attached
to an M port within a concentrator tree.
SAS
Single Attachment Station. A station that offers
one attachment to the FDDI network. An SAS has
an S port that is intended to be attached to an M
port within a concentrator tree.
secondary ring
One of two counter-rotating, fiber optic rings that
serve as the root of an FDDI network. The secondary
ring normally enters each station on the trunk ring
through the B port and exits through the A port.
See primary ring.
server
A computer that provides clients with application
and network services. Servers are shared by
multiple users.
SMT
Station Management. A component of the ANSI
FDDI standard (X3T9.5) that specifies the control
required for proper operation of a station in an FDDI
ring.
SNMP
Simple Network Management Protocol. A protocol
originally designed to be used in managing TCP/IP
internets. SNMP is presently implemented on a
wide variety of computers and networking
equipment and may be used to manage many
aspects of network and end-station operation.
station
An addressable logical and physical attachment in a
ring that is capable of transmitting, receiving, and
repeating information. An FDDI station has one or
more PHY entities, one or more MAC entities, and
only one SMT entity.
station ID
The unique identifier for an FDDI station or
concentrator.
topology
The physical or logical placement of stations on a
network in relation to one another, such as ring,
mesh, star, or bus.
G 7
LOSSARY