ADC AVIDIA SWD4573I1, User Manual

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Appendix D: Glossary
Avidia System Configuration and Management User Manual 615
Subnet Mask A type of IP address that allows a site to use a single IP address for
multiple physical networks.
TCP (Transmission
Control Protocol) A connection-oriented protocol in which datagrams are divided when sent
and reassembled when received. This allows the different components of
the message to be routed differently to increase the speed of
transmission.
Telnet An internet standard protocol that allows a user to log onto one system
from another system and perform tasks just as if he were logged on
locally.
TFTP (Trivial File Transfer
Protocol) A file transfer protocol that is often used to boot network devices over a
network.
Traps SNMP messages sent to alert network managers about network events.
Trap receivers PCs configured to received SNMP traps.
UAS (Unavailable
Seconds) Seconds during which the line is unavailable.
UBR (Unspecified Bit
Rate) A best-effort class of traffic, best suited for LAN. When network
congestion occurs, the data is stored in a buffer until it can be sent.
UDP (User Datagram
Protocol) A protocol in which datagrams are sent whole and in the correct order.
They cannot be divided when sent and then reassembled when received.
UPC (Usage Parameter
Controls) Service categories used to establish Quality of Service for an ATM
connection.
VBR (Variable Bit Rate) A traffic class that carries variable bandwidth. It is best suited for
applications such as compressed voice and video. It uses peak cell rate,
sustained cell rate, and maximum burst size for configuration. It is not
well suited for LAN traffic due to the unpredictability of LAN traffic burst
size.
VC or VCC (Virtual Circuit
or Virtual Circuit
Connection) A logical connection in the ATM network over which ATM cells are
transmitted.
VCC (Virtual Channel
Connection) A logical connection in the ATM network over which ATM cells are
transmitted.
VCMUX (Virtual
Circuit-based
encapsulation) Used in networks with a large number of virtual channel, so that it's
practical to carry a single protocol per virtual channel.
VP or VPC (Virtual Path or
Virtual Path Connection) A group of virtual circuits bundled together and carried between two
devices.
VP or VPC (Virtual Path or
Virtual Path Connection) A group of virtual circuits bundled together and carried between two
devices.