FORE Systems ES-2810 Ethernet Switch User's Manual
Glossary - 9
Glossary
Glossary
Common Management Interface Protocol (CMIP) - An ITU-TSS standard for the message for-
mats and procedures used to exchange management information in order to operate, adminis-
ter maintain and provision a network.
Concatenation - The connection of transmission channels similar to a chain.
Concentrator - a communications device that offers the ability to concentrate many lower-
speed channels into and out of one or more high-speed channels.
Configuration - The phase in which the LE Client discovers the LE Service.
Congestion Management - traffic management feature that helps ensure reasonable service for
VBR connections in an ATM network, based on a priority, sustained cell rate (SCR), and peak
cell rate (PCR). During times of congestion, bandwidth is reduced to the SCR, based on the
priority of the connection.
Connection - the concatenation of ATM Layer links in order to provide an end-to-end informa-
tion transfer capability to access points.
Connection Admission Control (CAC) - the procedure used to decide if a request for an ATM
connection can be accepted based on the attributes of both the requested connection and the
existing connections.
Connection Endpoint (CE) - a terminator at one end of a layer connection within a SAP.
Connection Endpoint Identifier (CEI) - an identifier of a CE that can be used to identify the con-
nection at a SAP.
Connectionless Broadband Data Service (CBDS) - A connectionless service similar to Bellcore’s
SMDS defined by European Telecommunications Standards Institute (ETSI).
Connectionless Service - a type of service in which no pre-determined path or link has been
established for transfer of information, supported by AAL 4.
Connectionless Service (CLS) - A service which allows the transfer of information among ser-
vice subscribers without the need for end-to- end establishment procedures.
Connection-Oriented Service - a type of service in which information always traverses the
same pre-established path or link between two points, supported by AAL 3.
Constant Bit Rate (CBR) - a type of traffic that requires a continuous, specific amount of band-
width over the ATM network (e.g., digital information such as video and digitized voice).
Controlled Slip (CS) - a situation in which one frame's worth of data is either lost or replicated.
A controlled slip typically occurs when the sending device and receiving device are not using
the same clock.
Convergence Sublayer (CS) - a portion of the AAL. Data is passed first to the CS where it is
divided into rational, fixed-length packets or PDUs (Protocol Data Units). For example, AAL 4
processes user data into blocks that are a maximum of 64 kbytes long.
Corresponding Entities - peer entities with a lower layer connection among them.
cpath - a FORE program used to manage virtual paths on a ForeRunner switch running asxd.
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