Chapter - Cisco ASR 5000 Series Administration Manual

Config Mode Lock Mechanisms
This chapter describes how administrative lock mechanisms operate within StarOS configuration mode.
It contains the following sections:
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Overview of Config Mode Locking
You enter the Global Configuration (config) mode via the Exec mode configure command. By default all
administrative users share config mode. Multiple administrative users can share access to config mode
simultaneously. This is called a shared-lock.
The primary indication for the existence of a shared-lock is a message displayed when entering config mode.
Warning: One or more other administrators may be configuring this system
There are no default restrictive behavior changes when entering config mode under a shared-lock.
Note
When multiple administrators edit or save the running config, concurrent changes may result in conflicting,
inconsistent, or missing configuration commands. A similar problem can occur when saving the configuration
if someone is attempting to restart the system.
An optional lock [ force | warn ] keyword for the configure command allows an administrator to request a
mutually exclusive lock of the config mode to assure that no other user is simultaneously modifying the
configuration. This is called an exclusive-lock. Once an exclusive-lock is granted to an administrator, no one
else can access config mode for the duration of the session while the lock is held. The exclusive-lock is
terminated only when the user holding the lock exits to Exec mode.
Overview of Config Mode Locking, page 83
Requesting an Exclusive-Lock, page 84
Effect of Config Lock on URL Scripts, page 85
Saving a Configuration File, page 86
Reload and Shutdown Commands, page 86
show administrators Command, page 87
C H A P T E R
ASR 5500 System Administration Guide, StarOS Release 21.4
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