Cisco XR 12000 Series Getting Started Guide

GL-153
Cisco IOS XR Getting Started Guide for the Cisco XR 12000 Series Router
OL-24755-01
Chapter
SP
service processor. An SP on each card maintains an internal management connection to the shelf
controller for the rack. The SP is referred to in CLI commands to identify the nodeID for fabric, alarm
and fan controller cards.
Example:
RP/0/RPO/CPU:router# admin show controllers fabric connectivity location 0/SM0/SP
SPE
Synchronous Payload Envelope. Portion of the SONET frame containing overhead information (POH
and user data).
SPF
shortest path first. Routing algorithm that iterates on length of path to determine a shortest-path
spanning tree. Commonly used in link-state routing algorithms. Sometimes called Dijkstra's algorithm.
SSH
Secure Shell. A protocol that provides a secure remote connection to a router through a Transmission
Control Protocol (TCP) application.
SSL
secure socket layer. A secure socket between two entities with authentication.
standby
Denotes an inactive card or process that waits to become active; standby cards or processes are also
sometimes denoted as backup.
startup
configuration
The router configuration designated to be applied on the next router startup.
subinterface
Virtual interfaces created on a hardware interface. These software-defined interfaces allow for
segregation of traffic into separate logical channels on a single hardware interface and better utilization
of the available bandwidth on the physical interface.
switchover
A switch between the active and standby cards. The switchover can be initiated by command, or it can
occur automatically when the active card fails.
system reload
Reload of a router node.
system restart
Soft reset of a router node. This involves restarting all processes running on that node.
T
TAC
Cisco Technical Assistance Center.
TACACS
Terminal Access Controller Access Control System. Authentication protocol, developed by the DDN
community, that provides remote access authentication and related services, such as event logging.
User passwords are administered in a central database rather than in individual routers, providing an
easily scalable network security solution.
tar
A tar file is a file produced by the UNIX tar program, which packages multiple files in a single file for
distribution as a single unit. Each tar file has a tar filename extension.
target configuration
A “two-stage” configuration of the Cisco IOS XR software running configuration. This allows users to
make changes to the running configuration and accept these changes by entering the commit command.
task ID
An identifier that determines user access to a given command or series of commands. A user must be
a member of a group with the appropriate task IDs assigned to it to execute the related commands.

Cisco XR 12000 Series Specifications

General

Brand	Cisco
Model	XR 12000 Series
Category	Network Router
Language	English