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Glossary
carrier group alarm.
CGA
A major alarm condition for a T1 multiplexer or PABX that results in all channels being taken out of
service.
The logical end point for a connection.
channel
See CAS.
channel associated
signaling
A T1 or E1 line that connects a user device, such as a PABX or channel bank to a switch. Carries
circuit line
customer DS0 voice and data circuits. See also line.
A UNIX-based workstation and software used as a network management system (NMS) for Cisco
Cisco WAN
WAN switching networks. Provides a graphical user interface for configuration, maintenance,
Manager
administration of the network. Collects and displays network statistics.
See CoS.
class of service
When all eight bits of a channel word in the T1 line signal are available for transmitting customer data
clear channel
capability
with no restrictions on content. Also referred to as 64 Kbps clear channel.
command line interface.
CLI
There are two separate Command-Line Interfaces on the BPX-LSR: One on the BPX itself and one on
the MPLS (Multiprotocol Label Switching) Controller. The Control Point integrate these into a single
command line interface.
consolidated link layer management.
CLLM
A protocol used to transmit ForeSight messages across the frame relay NNI port.
cell loss priority.
CLP
CLP Hi and CLP Lo thresholds are configured.
A frame relay connection parameter that specifies the number of packets allowed in the initial burst of
Cmax
data after which the data bandwidth is reduced to the connection's minimum specified bandwidth.
See CLI.
command line
interface
The CommBus is the BPX internal messaging protocol. The Switch Control Interface (SCI) that is used
CommBus
by PNNI on the Service Expansion Shelf (SES) is based on CommBus messaging accessed through
interfaces to the BPX cards.
See CCS.
common channel
signaling
Refers to interworking of a connection with respect to the IGX nodes. For example, in a Frame Relay
Complex Gateway
to ATM interworking, the Frame Relay data is extracted from FastPackets and transformed to ATM
cells with redundant overhead bits discarded.
See CCDV.
compliant cell
delay variation
The sum of the data rates for all circuits transmitting on the same synchronous or frame relay data card.
composite data
rate
Cisco BPX 8600 Series Installation and Configuration
GL-6
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
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Table of Contents
Troubleshooting
