R3303-HP 6600/HSR6600 Routers Fundamentals Configuration Guide

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To load the backup configuration file after a software downgrade, specify the backup file as the
next-startup configuration file.
6604/6608/6616
The file overwrite and backup operations are performed on both active MPU and standby MPU,
regardless of whether configuration auto-update is enabled.
If the backup attempt fails on the standby MPU, choose one of the following failure handling actions at
prompt:
• Give up saving the configuration—The system does not save the running configuration on any
MPU.
• Overwrite the configuration file—The system uses the running configuration to overwrite the old
configuration file on the MPU without backing up the file. You can copy the backup configuration
file from the active MPU to the standby MPU for future rollback.
Make sure each MPU has enough space for the backup configuration file and the new next-startup
configuration file.
To load the backup configuration file after a software downgrade, specify the backup file as the
next-startup configuration file on each MPU.
Specifying a configuration file for the next startup
You can specify a .cfg configuration file as the main startup configuration file to be used at the next
startup when you use the save command to save the running configuration to it.
Alternatively, perform the following task in user view to specify a next-startup configuration file:
Task Command Remarks
Specify a next-startup
configuration file.
startup saved-configuration
cfgfile [ backup | main ]
On the 6604/6608/6616 router, the setting
applies to both active MPU and standby MPU.
IMPORTANT:
The configuration file must use the .cfg extension and
be saved in the root directory of a storage medium.
Backing up the next-startup configuration file to a
TFTP server
Before performing this task, make sure the following requirements are met:
• The server is reachable and enabled with TFTP service.
• You have read and write permissions.
This task backs up only the main next-startup configuration file.
To back up the main next-startup configuration file to a TFTP server: