Cisco ASR 9000 User Manual

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-28417-02
Chapter Configuring General Router Features
Navigating the Cisco IOS XR Command Modes
Global configuration Global configuration mode is the starting point for configuration. Commands entered in this mode
affect the as a whole, rather than just one protocol or interface. Global configuration mode is also
used for entering configuration submodes to configure specific elements, such as interfaces or
protocols.
To enter global configuration mode, enter the configure command at the EXEC command prompt:
RP/0//CPU0:router# configure
RP/0//CPU0:router(config)#
Note The system prompt changes to router(config) to indicate that the router is now in global
configuration mode.
Configuration
submodes
From the global configuration mode, you can also enter other, more specific command modes. These
modes are available based on your assigned access privileges and include protocol-specific,
platform-specific, and feature-specific configuration modes.
In the following example, MPLS LDP configuration mode is entered from global configuration
mode. The prompt for MPLS LDP configuration submode appears as config-ldp. The following
command syntax is used for entering configuration MPLS LDP submode:
RP/0//CPU0:router# configure
RP/0//CPU0:router(config)# mpls ldp
RP/0/RP0/CPU0:router(config-ldp)#
Note The availability of any particular mode depends on the router features and the access rights
of the individual user. For example, a configuration mode for configuring access servers is
not available on most routers.
Interface configuration The interface configuration submode is used to select and configure a hardware interface. To enter
interface configuration mode from global configuration mode, use an interface command. An
interface configuration command always follows an interface global configuration command, which
defines the interface type. The following command syntax is used for entering interface
configuration submode:
RP/0//CPU0:router#
RP/0/RP0/CPU0:router(config-if)#
Router configuration The router configuration submode is used to select and configure a routing protocol, such as BGP,
OSPF, or IS-IS. The router protocol [protocol_options] command syntax is used for entering router
configuration submode.
Replace protocol with the keyword for the protocol to configure. Replace protocol_options with any
keywords and arguments required for that protocol. In the following example, the router enters the
router configuration mode for BGP:
RP/0//CPU0:router# configure
RP/0//CPU0:router(config)# router bgp 140
RP/0//CPU0:router(config-bgp)#
Table 5 Common Command Modes and CLI prompts (continued)
Command Mode Description

Cisco ASR 9000 Specifications

General

Brand	Cisco
Model	ASR 9000
Category	Network Router
Language	English