Cisco Cisco Content Security Management Appliance M1070 Mode D'Emploi
14-28
AsyncOS 9.5.x for Cisco Content Security Management Appliances User Guide
Chapter 14 Common Administrative Tasks
About Reverting to an Earlier Version of AsyncOS
About Reverting to an Earlier Version of AsyncOS
You can revert to an to a previous qualified version of AsyncOS for emergency uses.
You can also revert to the currently running build if you want to clear all data on the appliance and start
with a new, clean configuration.
with a new, clean configuration.
Important Note About Reversion Impact
Using the
revert
command on a Cisco Content Security appliance is a very destructive action. This
command permanently destroys all existing configurations and data. In addition, it disrupts mail
handling until the appliance is reconfigured.
handling until the appliance is reconfigured.
Reverting does not affect feature key or virtual appliance license expiration dates.
Reverting AsyncOS
Before You Begin
•
Back up or save any data that you want to preserve to a location off the appliance.
•
You must have a configuration file for the version you want to revert to. Configuration files are not
backwards-compatible.
backwards-compatible.
•
Because this command destroys all configuration, it is highly recommended that you have physical
local access to the appliance when reverting.
local access to the appliance when reverting.
•
If quarantines are enabled on your Email Security appliances, disable centralization so that
messages are quarantined locally on those appliances.
messages are quarantined locally on those appliances.
Procedure
Step 1
Ensure that you have the configuration file for the version you want to revert to. Configuration files are
not backwards-compatible.
not backwards-compatible.
Step 2
Save a backup copy of the current configuration of your appliance (with passwords unmasked) on
another machine. To do this, you can email the file to yourself or FTP the file. A simple way to do this
is to run the
another machine. To do this, you can email the file to yourself or FTP the file. A simple way to do this
is to run the
mailconfig
CLI command, which emails the current configuration file on your appliance
to the specified email address.
Note
This is not the configuration file you will load after reverting.
Step 3
If you use the Safelist/Blocklist feature, export the Safelist/Blocklist database to another machine.
Step 4
Suspend any listeners on your Email Security appliances.
Step 5
Wait for the mail queue to empty.
Step 6
Log in to the CLI of the appliance you want to revert.
When you run the
revert
command, several warning prompts are issued. Once these warning prompts
are accepted, the revert action takes place immediately. Therefore, do not begin the reversion process
until after you have completed the prereversion steps.
until after you have completed the prereversion steps.
Step 7
From the command-line prompt, type the revert command and respond to the prompts.