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FINAL DRAFT —Cisco Confidential
3-16
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 3 Configuring General Router Features
Managing Configuration Sessions
bcm8705 Show trace data for the bcm8705 component
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Note The commands available to you depend on the router mode and your user group assignments.
Step 3 If you belong to a user group that has configuration privileges, you can place the router in the global
configuration mode by entering the configure command:
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)#
Step 4 From global configuration mode, you can place the router in a configuration submode, such as interface
configuration mode or a protocol-specific configuration mode.
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# mpls ldp
RP/0/RSP0/CPU0:router(config-ldp)#
In the following example, the router enters interface configuration mode and the user selects an MPLS
Traffic Engineering Tunnel interface for configuration.
RP/0/RSP0/CPU0:router(config)# interface tunnel-te 2
RP/0/RSP0/CPU0:router(config-if)#
The command mode prompt changes from (config) to (config-if) and you can now enter
configuration commands for the specified interface.
Step 5 To exit interface configuration mode and return to global configuration mode, type the exit command.
To return to EXEC mode, type the end command.
Managing Configuration Sessions
With the Cisco IOS XR Software, you cannot change the running (active) configuration directly. Enter
configuration changes into an inactive target configuration. When the target configuration is ready, apply
that configuration to the router with the commit command. This allows you to make, edit, and verify
configuration changes before impacting the running state of the router.
Figure 3-2 shows the two-stage configuration process.