Glossary - Paradyne OPENLANE User Manual

Glossary

AIX
BECN
BES
CIR
community name
CRC6
CSS
daemon
DDS
DE
DLCI
DS1
DSL
DSLAM DSL
E1
Enterprise MIB
errored second
FCS
7800-A2-GB28-80
IBM-UNIX operating system.
Backward Explicit Congestion Notification. A bit set and forwarded by the network to notify
users of data traffic congestion, sent in the opposite direction of the frame carrying the
BECN indicator or bit. Outbound frames may encounter congestion and be dropped.
Bursty Error Seconds. A second in which more than one but less than 320 CRC6 error
events have occurred.
Committed Information Rate. Less than or equal to the access rate, the CIR is used by the
service provider for rate enforcement when the network allocates bandwidth. When rates
exceed the CIR, frames may be discarded.
An identification used by an SNMP manager to grant an SNMP server access rights to a
MIB.
Cyclic Redundancy Check. A mathematical method of confirming the integrity of received
digital data using six check bits.
Controlled Slip Seconds. A period in which a frame was added or deleted because of a
variance in timing.
An agent program that runs continuously on a server system and provides resources to
client systems on the network.
Digital Data Service, such as DATAPHONE Digital Service or ACCUNET Spectrum of
Digital Services, that provides private digital communication circuits.
Discard Eligible. Part of the frame header that marks a frame for low priority if there is
congestion on the network. If congestion occurs, DE frames are the first to be discarded by
the network.
Data Link Connection Identifier. The virtual circuit number corresponding to a particular
connection between two destinations. This number is used as part of the frame relay
header. The total number of DLCIs between endpoints make up the PVC. DLCIs are a
local means of identifying a PVC.
Digital Signal level 1 (one). A digital signal transmitted at the rate of 1.544 Mbps in
North America.
Digital Subscriber Line. The non-loaded, local-loop copper connection between the
customer and the first node within the network.
Digital Subscriber Line Access Multiplexer. A platform for DSL modems that provides
high-speed data transmission with POTS over traditional twisted-pair wiring.
A wideband digital interface operating at 2.048 Mbps, defined by ITU recommendations
G.703 and G.704. It is used primarily outside of North America.
MIB objects unique to a specific company's devices.
A performance measurement reported during a Digital Test or Transmit Test Pattern that is
defined as a second in which at least one error has been detected.
Frame Check Sequence. A value calculated at the sending and receiving end of a
connection to determine if error have occurred in transmission of a frame.
May 1999
GL-1