Cisco Cisco Email Security Appliance C650 Guía Del Usuario
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User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 33 System Administration
Reverting to a Previous Version of AsyncOS
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The username and password required to execute the power-cycle command.
These credentials are independent of other credentials used to access your appliance.
Step 5
Enter
commit
to save your changes.
Step 6
Test your configuration to be sure that you can remotely manage appliance power.
Step 7
Ensure that the credentials that you entered will be available to you in the indefinite future. For example,
store this information in a safe place and ensure that administrators who may need to perform this task
have access to the required credentials.
store this information in a safe place and ensure that administrators who may need to perform this task
have access to the required credentials.
Related Topics
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Reverting to a Previous Version of AsyncOS
AsyncOS includes the ability to revert the AsyncOS operating system to a previous qualified build for
emergency uses.
emergency uses.
Reversion Impact
Using the
revert
command on a appliance is a very destructive action. This command destroys all
configuration logs and databases. Only the network information for the management interface is
preserved--all other network configuration is deleted. In addition, reversion disrupts mail handling until
the appliance is reconfigured. Because this command destroys network configuration, you may need
physical local access to the appliance when you want to issue the
preserved--all other network configuration is deleted. In addition, reversion disrupts mail handling until
the appliance is reconfigured. Because this command destroys network configuration, you may need
physical local access to the appliance when you want to issue the
revert
command.
Caution
You must have a configuration file for the version you wish to revert to. Configuration files are not
backwards-compatible.
backwards-compatible.
Reverting AsyncOS on Virtual Appliances May Impact the License
If you revert from AsyncOS 9.0 for Email to AsyncOS 8.5 for Email, the license does not change.
If you revert from AsyncOS 9.0 for Email to AsyncOS 8.0 for Email, there is no longer a 180-day grace
period during which the appliance delivers mail without security features.
period during which the appliance delivers mail without security features.
Feature key expiration dates do not change in either case.
Related Topics
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