Cisco Catalyst 2960 Series, Configuration Manual

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Configuration Guidelines
Follow these guidelines when configuring and performing configuration replacement and rollback:
• Make sure that the switch has free memory larger than the combined size of the two configuration files
(the running configuration and the saved replacement configuration). Otherwise, the configuration
replacement operation fails.
• Make sure that the switch also has sufficient free memory to execute the configuration replacement or
rollback configuration commands.
• Certain configuration commands, such as those pertaining to physical components of a networking
device (for example, physical interfaces), cannot be added or removed from the running configuration.
◦ A configuration replacement operation cannot remove the interface interface-id command line
from the running configuration if that interface is physically present on the device.
◦ The interface interface-id command line cannot be added to the running configuration if no such
interface is physically present on the device.
• When using the configure replace command, you must specify a saved configuration as the replacement
configuration file for the running configuration. The replacement file must be a complete configuration
generated by a Cisco IOS device (for example, a configuration generated by the
copy
running-config destination-url command).
If you generate the replacement configuration file externally, it must comply with the format of files
generated by Cisco IOS devices.
Note
Configuring the Configuration Archive
Using the configure replace command with the configuration archive and with the archive config command
is optional but offers significant benefit for configuration rollback scenarios. Before using the archive config
command
, you must first configure the configuration archive. Starting in privileged EXEC mode, follow
these steps to configure the configuration archive:
Before You Begin
SUMMARY STEPS
1.
configure terminal
2. archive
3.
pathurl
4.
maximumnumber
5. time-period minutes
6.
end
7. show running-config
8. copy running-config startup-config
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2061
Replacing and Rolling Back Configurations