Cisco ASR 9000 User Manual

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-28417-02
GLOSSARY
A
AAA
authentication, authorization, and accounting. A network security service that provides the primary
framework to set up access control on a router or access server. AAA is an architectural framework and
modular means of configuring three independent but closely related security functions in a consistent
manner.
ACL
access control list. A list kept by routers to control access to or from the router for a number of services
(for example, to prevent packets with a certain IP address from leaving a particular interface on the
router).
active
Denotes a card or process that performs a system task; in a redundant configuration, there is an inactive
standby card or process available to become active. Active cards or processes are also sometimes
denoted as primary.
active RP
The RP that is active in a redundant pair of RPs.
active software
configuration
The software configuration marked as active for a node.
active software set
The set of Cisco IOS XR software packages activated in one or more nodes in a router.
algorithm
A well-defined rule or process for arriving at a solution to a problem. In networking, algorithms
commonly are used to determine the best route for traffic from a particular source to a particular
destination.
APS
automatic protection switching. A method that allows transmission equipment to recover automatically
from failures, such as a cut cable.
ASIC
application-specific integrated circuit. A chip designed for use in a specific hardware device. An ASIC
is a chip designed for a special application, such as a particular kind of transmission protocol.
B
bandwidth
The amount of data that can be sent in a fixed amount of time. For digital devices, the bandwidth is
usually expressed in bits per second (Bps) or bytes per second.
BGP
Border Gateway Protocol. A routing protocol used between autonomous systems. It is the routing
protocol that makes the internet work. BGP is a distance-vector routing protocol that carries
connectivity information and an additional set of BGP attributes. These attributes allow for a rich set
of policies for deciding the best route to use to reach a given destination.

Cisco ASR 9000 Specifications

General

Brand	Cisco
Model	ASR 9000
Category	Network Router
Language	English