Cisco Cisco Email Security Appliance C160 Mode D'Emploi

On clustered machines, actions apply only to the machine to which you are logged in. 

As a best practice, Cisco recommends preparing for an upgrade by taking the following steps. 

Save the XML configuration file off-box. If you need to revert to the pre-upgrade release for any reason, 
you will need this file. 

If you are using the Safelist/Blocklist feature, export the list off-box.

Suspend all listeners. If you perform the upgrade from the CLI, use the 

suspendlistener

 command. If 

you perform the upgrade from the GUI, listener suspension occurs automatically.

Wait for the queue to empty. You can use the 

workqueue

 command to view the number of messages in 

the work queue or the 

rate

 command in the CLI to monitor the message throughput on your appliance.

Re-enable the listeners post-upgrade.

You can download and install in a single operation, or download in the background and install later.

When downloading and upgrading AsyncOS in a single operation from a local server instead of from a 
Cisco IronPort server, the upgrade installs immediately while downloading. 
A banner displays for 10 seconds at the beginning of the upgrade process. While this banner is displayed, 
you have the option to type Control-C to exit the upgrade process before downloading starts. 

View more information about the latest upgrade 

Hover over the upgrade notification.

View a list of all available upgrades 

Click the down arrow in the notification. 

Dismiss a current notification.

The appliance will not display another notification 
until a new upgrade becomes available.

Click the down arrow, then select Clear the 
notification, then click Close. 

Prevent future notifications (Users with 
Administrator privileges only.) 

Go to System Administration > System 
Upgrade.