It is a real nightmare for all SAN admins when they think about restoring switch configuration. Though it is rare case to restore the switch configuration under normal circumstances, we should be aware about the process and precautions which need to follow while restoring the configuration backup. When we restore a configuration file, we are actually overwriting the existing configuration with a previously saved backup configuration file. While we are restoring a configuration backup, make sure the FOS and switch model is compatible so that we won't encounter further issues while restoring the configuration.
The switches must be disabled first. If they are not, the configDownload command wont give the expected result. So, before running the configDownload command, verify the switches are disabled. It is recommended to run the configDefault command before running the configDownload command.Please do not try to edit the saved config file as it may corrupt the fields and download won't work as expected.
The pre-checks and procedure is as described below,
1.Check FTP service is running on the server where the backup configuration file is stored.
2.Connect to the switch using an administrator account.
3.Disable the switch by entering the switchDisable command.
4.Enter the configDownload command.The command is interactive and we will be prompted for the required information.
5.Enter switchEnable command once the process is finished.
6.It is appropriate to perform a reboot after we have downloaded the configuration file.
The switches must be disabled first. If they are not, the configDownload command wont give the expected result. So, before running the configDownload command, verify the switches are disabled. It is recommended to run the configDefault command before running the configDownload command.Please do not try to edit the saved config file as it may corrupt the fields and download won't work as expected.
The pre-checks and procedure is as described below,
1.Check FTP service is running on the server where the backup configuration file is stored.
2.Connect to the switch using an administrator account.
3.Disable the switch by entering the switchDisable command.
4.Enter the configDownload command.The command is interactive and we will be prompted for the required information.
Switch01:admin> configdownload
Protocol (scp, ftp, local) [ftp]:
Server Name or IP Address [host]: 192.168.1.10
User Name [user]: sanadmin
Path/Filename [/config.txt]: switchConfigbkp.txt
Section (all|chassis|FID# [all]):
*** CAUTION ***
This command is used to download a backed-up configuration
for a specific switch. If using a file from a different
switch, this file's configuration settings will override
any current switch settings. Downloading a configuration
file, which was uploaded from a different type of switch,
may cause this switch to fail.
A switch reboot is required for the changes to take effect.
Please make sure all the switches are disabled by
using "chassisdisable" command. Downloading configuration
to an online switch may result in some configuration not
being downloaded to that switch.
configDownload operation may take several minutes
to complete for large files.
Do you want to continue [y/n]:y
Password:
configDownload complete.
5.Enter switchEnable command once the process is finished.
6.It is appropriate to perform a reboot after we have downloaded the configuration file.
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