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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
circuit line
A T1 or E1 line that connects a user device, such as a PABX or channel bank to a switch. Carries
customer DS0 voice and data circuits. (See also line.)
Cisco StrataView
Plus
A Unix-based workstation and software used as a network management system (NMS) for Cisco WAN
switching networks. It is part of the StrataSphere group. Provides a graphical user interface for
configuration, maintenance, administration of the network. Collects and displays network statistics.
clear channel
capability
When all eight bits of a channel word in the T1 line signal are available for transmitting customer data
with no restrictions on content. Also referred to as 64 Kbps clear channel.
Cmax
A frame relay connection parameter that specifies the number of packets allowed in the initial burst of
data after which the data bandwidth is reduced to the connection's minimum specified bandwidth.
CLLM
Consolidated Link Layer Management. A protocol used to transmit ForeSight messages across the
frame relay NNI port.
CLP (Cell loss
priority)
Cell loss Priority. CLP Hi and CLP Lo thresholds are configurable.
Complex Gateway
Refers to interworking of a connection with respect to the IGX nodes. For example, in a Frame Relay
to ATM interworking, the Frame Relay data is extracted from FastPackets and transformed to ATM
cells with redundant overhead bits discarded.
composite data
rate
The sum of the data rates for all circuits transmitting on the same synchronous or frame relay data card.
control port
An RS-232 port on the face plate of a back card for a controller card (BCC, NPC, NPM.) that may used
for connecting a control terminal. This port is bi-directional.
COS (Class of
Service)
The priority assigned each user connection. Defines which circuits get rerouted first during a network
failure.
COS Buffer
A buffer or queue that serves connections with similar QoS requirements. Also called “qbin” (though a
qbin is a platform-specific instance, such as a BXM card, of the more general Class of Service Buffer
(CoSB).
Class of Service
(CoS) Buffer
Descriptor
Template
A component of a Service Class Template that contains Class of Service Buffer configurations indexed by
CoSB number.
A qbin is a platform-specific (BXM in this case) instance of the more general Class of Service Buffer (or
CosB).
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.
CommBus
The CommBus is the BPX’s internal messaging protocol. The Switch Control Interface (SCI) that is used
by PNNI on the Service Expansion Shelf (SES) is based on CommBus messaging accessed through
interfaces to the BPX cards.
CoSB
See Class of Service (CoS) Buffer.
C