Cisco Cisco IPS 4255 Sensor

This section describes the actions you should take before upgrading to Cisco IPS 6.2(2)E4. It contains 
the following topics:

Before you upgrade your sensors to Cisco IPS 6.2(2)E4, make sure you perform the following tasks:

Check to make sure you have a valid Cisco Service for IPS service contract per sensor so that you 
can apply software upgrades.

Created a backup copy of your configuration.

Saved the output of the show version command.

I f you need to downgrade a signature update, you will know what version you had, and you can then 
apply the configuration you saved when you backed up your configuration. 

For more information on how to obtain a valid Cisco Service for IPS service contract, see 

.

For the procedure for creating a backup copy of your configuration, see 

.

For the procedure for finding your Cisco IPS software version, for the CLI refer to 

, for IDM refer to

, and for IME refer to 

. 

For the procedure for downgrading signature updates on your sensor, refer to 

We recommend copying the current configuration file to a remote server before upgrading.

Use the copy [/erase] source_url destination_url keyword command to copy the configuration file to a 
remote server. You can then restore the current configuration from the remote server. You are prompted 
to back up the current configuration first.