Cisco CRS-1 - Carrier Routing System Router Getting Started Manual page 261

The configuration stored in the system for a particular node. The RP loads the committed configuration
committed/saved
software into memory at startup.
configuration
The directory for a composite PIE file used to manage all the corresponding packages as a group. See
composite directory
also PIE.
In Cisco routers, a 16-bit, user-configurable value that determines how the router functions during
configuration
initialization. The configuration register can be stored in hardware or software. In hardware, the bit
register
position is set using a jumper. In software, the bit position is set by specifying a hexadecimal value
using configuration commands. A hexadecimal or decimal value that represents the 16-bit
configuration register value that you want to use the next time the router is restarted. The value range
is from 0x0 to 0xFFFF (0 to 65535 in decimal).
The control plane oversees the operation of the data plane, allocating resources, providing information,
control plane
and handling errors to allow data plane operations to be continuous and efficient.
Common Object Request Broker Architecture. Specification that provides the standard interface
CORBA
definition between OMG-compliant objects. CORBA allows applications to communicate with one
another no matter where they are located or who has designed them.
class of service. An indication of how an upper-layer protocol requires a lower-layer protocol to treat
CoS
its messages. In SNA subarea routing, CoS definitions are used by subarea nodes to determine the
optimal route to establish a given session. A CoS definition comprises a virtual route number and a
transmission priority field. Repetitive, regularly timed signals are used to control synchronous
processes.
complete sequence number protocol data unit (PDU). PDU sent by the designated router in an OSPF
CSNP
network to maintain database synchronization.
Craft Works Interface. Graphical user interface (GUI) used to configure and operates a Cisco CRS-1
CWI
Series routing system. The CWI client runs in a web browser.
D
data communication channel. Channel that carries provisioning and maintenance data or information
DCC
between network elements in the SONET overhead.
DC power entry module.
DC PEM
distributed defect tracking system. A method to track software errors and resolutions.
DDTS
Dynamic Host Configuration Protocol. Provides a mechanism for allocating IP addresses dynamically
DHCP
so that addresses can be reused when hosts no longer need them.
dual in-line memory module. Small circuit boards carrying memory integrated circuits, with signal and
DIMM
power pins on both sides of the board, in contrast to single-in-line memory modules (SIMMs).
Domain Name System. Mechanism used in the Internet and on private intranets for translating names
DNS
of host computers into addresses. The DNS also allows host computers not directly on the Internet to
have a registered name in the same style.
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Glossary
GL-3