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FINAL DRAFT —Cisco Confidential
3-13
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 3 Configuring General Router Features
Navigating Cisco IOS XR Software Command Modes
administration
configuration mode
Administration configuration mode allows you to assign system resources to RSPs.
From administration EXEC mode, use the configure command to enter administration configuration
submode:
RP/0/RSP0/CPU0:router(admin)# configure
RP/0/RSP0/CPU0:router(admin-config)#
Global configuration Global configuration mode is the starting point for RSP configuration. Commands entered in this
mode affect the RSP 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, type the configure command at the EXEC command prompt:
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/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 enter more specific command modes. These are
available based on your 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/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# mpls ldp
RP/0/RSP0/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.
RP/0/RSP0/CPU0:router(config)# interface tunnel-te 2
RP/0/RSP0/CPU0:router(config-if)#
Router configuration The router configuration submode is used to select and configure a routing protocol, like OSPF, or
IS-IS. The following command syntax is used for entering router configuration submode: router
protocol [protocol_options]
Replace protocol with the keyword for the protocol you want to configure. Replace protocol_options
with any keywords and arguments required for that protocol.
RP/0/RSP0/CPU0:router(config)# router ospf 100
RP/0/RSP0/CPU0:router(config-ospf)#
Table 3-4 Common Command Modes and CLI Prompts (continued)
Command Mode Description