Chapter 2 Cisco Crs-1 Series Xml Router Configuration And Management; Target Configuration Overview - Cisco CRS-1 - Carrier Routing System Router Api Manual

Cisco CRS-1 Series XML Router Configuration
and Management
This chapter reviews the basic extensible markup language (XML) requests and responses used to
configure and manage the Cisco CRS-1 Series Carrier Routing System (Cisco CRS-1 Series) router.
Note The XML API code is available for use on any Cisco platform that runs Cisco IOS XR software.
The use of XML to configure the Cisco CRS-1 Series router is essentially an abstraction of a
configuration editor where client applications can, load, browse, and modify configuration data without
affecting the current running (that is, active) configuration on the router. This configuration is called the
"target configuration" and is not the running configuration on the router. The router's running
configuration can never be modified directly. All changes to the running configuration must go through
the target configuration.
Each client application session has its own target configuration, which is not visible to other client
Note
sessions.
This chapter contains the following sections:
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Target Configuration Overview

The target configuration is effectively the current running configuration overlaid with the client-entered
configuration. In other words, the target configuration is the client-intended configuration if the client
were to commit changes. In terms of implementation, the target configuration is a Cisco CRS-1 Series
operating system buffer that contains just the changes (set and delete) that are performed within the
configuration session.
A "client session" is synonymous with a single Common Object Request Broker Architecture (CORBA),
Telnet, or Secure Shell (ssh) connection and authentication, authorization, and accounting (AAA) login.
The target configuration is created implicitly at the beginning of a client application session and must
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"Target Configuration Overview"
"Configuration Operations"
"Additional Cisco CRS-1 Series Router Configuration and Management Options Using XML"
C H A P T E R
Cisco CRS-1 Series Carrier Routing System XML API Guide
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