3Com CoreBuilder 7000 Operation Manual page 252

252 G
LOSSARY
QoS (Quality of Service) Quality of service is defined on an end-to-end basis
in terms of the following attributes of the end-end-to-end ATM
connection: Cell Loss Ration, Cell Transfer Delay and Cell Delay
Variation.
Quality of Service Parameters that are defined by the network manager and include
(QoS) metrics information on bandwidth, guaranteed cell delay, jitter, and other
performance options available for establishing a new ATM connection.
R
reachability A list of reachable addresses for any one node.
information
A device that connects two remote networks by selectively forwarding
router
messages between them. A router differs from a bridge and a gateway
in that it selectively forwards information between the networks.
Routers can be implemented in pairs, or a router may communicate
directly with a computer.
RS-232 serial port Use of this port changes the parallel arrangement of data within
computers to the serial (one after the other) form used on data
transmission links. This port can be used for dedicated local
management access.
S
SAR Segmentation and Reassembly. A method of breaking up arbitrarily
sized packets.
scope A scope defines the level of advertisement for an address. The level is a
level of a peer group in the PNNI routing hierarchy.
A computer that provides clients with application and network services.
server
Servers are shared by multiple users.
The selection of the correct path, by the PNNI.
source routing
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.