Cisco Router IOS XR Getting Started Manual page 200

Glossary
C
The type of the card inserted in a slot.
card type
Cisco Discovery Protocol. CDP runs on all Cisco devices so that these devices can learn about
CDP
neighboring devices and exchange information. CDP uses a well-known multicast MAC address.
During system initialization, the application-specific integrated circuit (ASIC) is configured to forward
these packets to the Cisco IOS XR software CPU, which processes the packets.
The Cisco website
Cisco.com
command-line interface. A text-based user interface to an operating system. A command-line interface
CLI
is a user interface to a computer operating system or an application in which the user responds to a
visual prompt by typing a command on a specified line, receives a response from the system, and then
enters another command, and so forth. Typically, most of the UNIX-based systems today offer both a
command-line interface and graphical user interface (GUI). See also GUI.
The configuration stored in the system for a particular node. The RP loads the committed configuration
committed/saved
into memory at startup.
software
configuration
In Cisco routers, a 16-bit, user-configurable value that determines how the router functions during
configuration
register initialization. The configuration register can be stored in hardware or software. In hardware, the bit
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
transmission priority field. Repetitive, regularly timed signals are used to control synchronous
processes.
Craft Works Interface. Graphical user interface (GUI) used to configure and operate a router. The CWI
CWI
client runs in a web browser.
D
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.
Cisco IOS XR Getting Started Guide
GL-2
OL-10957-02