How to Back Up and Restore Cisco Switch Configs | Backup and Restore Cisco Router Config Using TFTP. 

This video shows how to backup and restore the configuration file on cisco routers by Using Putty and TFTP server.
backup and restore cisco running config
backup and restore cisco switch configuration
backup and restore cisco router configuration
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Backup and restore cisco router configuration TFTP server
Backing up cisco router configuration
Restoring cisco router configuration
CCNA and CCNP tutorial