3-21
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 3 Configuring General Router Features
Managing Configuration Sessions
end
Starting an Exclusive Configuration Session
An exclusive configuration session allows you to configure the administration configuration or an RSP
and lock out all users from committing configuration changes until you are done. Other users can still
create and modify a target configuration, but they cannot commit those changes to the running
configuration until you exit.
During regular configuration sessions, the running configuration is locked whenever a commit operation
is being performed. This automatic locking ensures each commit operation is completed before the next
one begins. Other users receive an error message if they attempt to commit a target configuration while
another commit operation is under way.
To start an exclusive configuration session for an RSP, connect to that RSP and type the configure
exclusive command:
RP/0/RSP0/CPU0:router# configure exclusive
RP/0/RSP0/CPU0:router(config)#
Note If the configuration is already locked by another user, the configure exclusive command fails. To view
locked and unlocked configuration sessions, see the “Viewing Active Configuration Sessions” section
on page 3-19.
To start an exclusive configuration session for the administration configuration, connect to the RSP and
type the configure exclusive command in administration EXEC mode:
RP/0/RSP0/CPU0:router# admin
RP/0/RSP0/CPU0:router(admin)# configure exclusive
RP/0/RSP0/CPU0:router(admin-config)#
The running configuration is unlocked when the user who started the exclusive configuration session
exits the configuration mode, as described in the “Ending a Configuration Session” section on page 3-31.
Viewing Configuration Details
The following sections describe the different ways to view information about your configuration:
• Viewing the Running Configuration, page 3-21
• Viewing a Sanitized Version of the Running Configuration, page 3-22
• Viewing the Target Configuration, page 3-23
• Viewing a Combined Target and Running Configuration, page 3-24
• Viewing Configuration Error Messages and Descriptions, page 3-25
• Viewing Configuration Error Messages Without Descriptions, page 3-25
• Viewing Configuration Error Messages Produced While Loading a Configuration, page 3-25

Viewing the Running Configuration

The running configuration is the committed configuration that defines the router operations, and it is
divided into the administration configuration and an RSP configuration for each RSP. The portion of the
running configuration that you can view depends on the current CLI mode and RSP connection.