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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Appendix B Working with the Cisco IOS File System, Configuration Files, and Software Images Working with Configuration Files
• 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).
Note If you generate the replacement configuration file externally, it must comply with the format of files
generated by Cisco IOS devices.
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:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 archive Enter archive configuration mode.
Step 3 path url Specify the location and filename prefix for the files in the configuration
archive.
Step 4 maximum number (Optional) Set the maximum number of archive files of the running
configuration to be saved in the configuration archive.
number—Maximum files of the running configuration file in the configuration
archive. Valid values are from 1 to 14. The default is 10.
Note Before using this command, you must first enter the path archive
configuration command to specify the location and filename prefix for
the files in the configuration archive.
Step 5 time-period minutes (Optional) Set the time increment for automatically saving an archive file of
the running configuration in the configuration archive.
minutes—Specify how often, in minutes, to automatically save an archive file
of the running configuration in the configuration archive.
Step 6 end Return to privileged EXEC mode.
Step 7 show running-config Verify the configuration.
Step 8 copy running-config
startup-config (Optional) Save your entries in the configuration file.